Bump version

Fixed output for "Justified epoch distance"

.dockerignore

@@ -0,0 +1,24 @@
+# Binaries for programs and plugins
+*.exe
+*.dll
+*.so
+*.dylib
+ethdo
+
+# Test binary, build with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+coverage.html
+
+# Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
+.glide/
+
+# Vim
+*.sw?
+
+# Local TODO
+TODO.md
+
+Dockerfile

.github/workflows/release.yml

@@ -0,0 +1,115 @@
+name: Release
+
+on:
+  push:
+    tags:
+    - 'v*'
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Set up Go 1.x
+      uses: actions/setup-go@v2
+      with:
+        go-version: ^1.13
+      id: go
+
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v2
+
+    - name: Get dependencies
+      run: |
+       go get -v -t -d ./...
+       if [ -f Gopkg.toml ]; then
+         curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
+         dep ensure
+       fi
+
+    - name: Set env
+      run: |
+       echo '::set-env name=GO111MODULE::on'
+       # Release tag comes from the github reference.
+       RELEASE_TAG=$(echo ${GITHUB_REF} | sed -e 's!.*/!!')
+       echo "::set-env name=RELEASE_TAG::${RELEASE_TAG}"
+       echo "::set-output name=RELEASE_TAG::${RELEASE_TAG}"
+       # Ensure the release tag has expected format.
+       echo ${RELEASE_TAG} | grep -q '^v' || exit 1
+       # Release version is same as release tag without leading 'v'.
+       RELEASE_VERSION=$(echo ${GITHUB_REF} | sed -e 's!.*/v!!')
+       echo "::set-env name=RELEASE_VERSION::${RELEASE_VERSION}"
+       echo "::set-output name=RELEASE_VERSION::${RELEASE_VERSION}"
+
+    - name: Build
+      run: go build -v -ldflags="-X github.com/wealdtech/ethdo/cmd.ReleaseVersion=${RELEASE_VERSION}" .
+
+    - name: Test
+      run: go test -v .
+
+    - name: Fetch xgo
+      run: |
+       go get github.com/suburbandad/xgo
+
+    - name: Cross-compile
+      run: xgo -v -x -ldflags="-X github.com/wealdtech/ethdo/cmd.ReleaseVersion=${RELEASE_VERSION}" --targets="linux/amd64,linux/arm64,windows/amd64" github.com/wealdtech/ethdo
+
+    - name: Create windows zip file
+      run: |
+       mv ethdo-windows-4.0-amd64.exe ethdo.exe
+       zip --junk-paths ethdo-${RELEASE_VERSION}-windows-exe.zip ethdo.exe
+
+    - name: Create linux AMD64 tgz file
+      run: |
+       mv ethdo-linux-amd64 ethdo
+       tar zcf ethdo-${RELEASE_VERSION}-linux-amd64.tar.gz ethdo
+
+    - name: Create linux ARM64 tgz file
+      run: |
+       mv ethdo-linux-arm64 ethdo
+       tar zcf ethdo-${RELEASE_VERSION}-linux-arm64.tar.gz ethdo
+
+    - name: Create draft release
+      id: create_release
+      uses: actions/create-release@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        tag_name: ${{ github.ref }}
+        release_name: Release ${{ env.RELEASE_VERSION }}
+        draft: true
+        prerelease: false
+       
+    - name: Upload windows zip file
+      id: upload-release-asset-windows
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.create_release.outputs.upload_url }}
+        asset_path: ./ethdo-${{ env.RELEASE_VERSION }}-windows-exe.zip
+        asset_name: ethdo-${{ env.RELEASE_VERSION }}-windows-exe.zip
+        asset_content_type: application/zip
+       
+    - name: Upload linux AMD64 tgz file
+      id: upload-release-asset-linux-amd64
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.create_release.outputs.upload_url }}
+        asset_path: ./ethdo-${{ env.RELEASE_VERSION }}-linux-amd64.tar.gz
+        asset_name: ethdo-${{ env.RELEASE_VERSION }}-linux-amd64.tar.gz
+        asset_content_type: application/gzip
+       
+    - name: Upload linux ARM64 tgz file
+      id: upload-release-asset-linux-arm64
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.create_release.outputs.upload_url }}
+        asset_path: ./ethdo-${{ env.RELEASE_VERSION }}-linux-arm64.tar.gz
+        asset_name: ethdo-${{ env.RELEASE_VERSION }}-linux-arm64.tar.gz
+        asset_content_type: application/gzip

Dockerfile

@@ -0,0 +1,19 @@
+FROM golang:1.14-buster as builder
+
+WORKDIR /app
+
+COPY go.mod go.sum ./
+
+RUN go mod download
+
+COPY . .
+
+RUN go build
+
+FROM debian:buster-slim
+
+WORKDIR /app
+
+COPY --from=builder /app/ethdo /app
+
+ENTRYPOINT ["/app/ethdo"]

README.md

@@ -5,11 +5,14 @@
 
 A command-line tool for managing common tasks in Ethereum 2.
 
-** Please note that this library uses standards that are not yet final, and as such may result in changes that alter public and private keys.  Do not use this library for production use just yet **
+**Please note that this tool and its underlying libraries have not yet undergone a security audit; use at your own risk.**
 
 ## Table of Contents
 
 - [Install](#install)
+  - [Binaries](#binaries)
+  - [Docker](#docker)
+  - [Source](#source)
 - [Usage](#usage)
 - [Maintainers](#maintainers)
 - [Contribute](#contribute)
@@ -17,24 +20,74 @@ A command-line tool for managing common tasks in Ethereum 2.
 
 ## Install
 
+### Binaries
 
+Binaries for the latest version of `ethdo` can be obtained from [the releases page](https://github.com/wealdtech/ethdo/releases).
+
+### Docker
+
+You can obtain the latest version of `ethdo` using docker with:
+
+```
+docker pull wealdtech/ethdo
+```
+
+### Source
 `ethdo` is a standard Go program which can be installed with:
 
 ```sh
-go get github.com/wealdtech/ethdo
+GO111MODULE=on go get github.com/wealdtech/ethdo
 ```
 
+Note that `ethdo` requires at least version 1.13 of go to operate.  The version of go can be found with `go version`.
+
+If this does not work please see the [troubleshooting](https://github.com/wealdtech/ethdo/blob/master/docs/troubleshooting.md) page.
+
+The docker image can be build locally with:
+
+```sh
+docker build -t ethdo .
+```
+
+You can run `ethdo` using docker after that. Example:
+
+```sh
+docker run -it ethdo --help
+```
+
+Note that that many `ethdo` commands connect to the beacon node to obtain information.  If the beacon node is running directly on the server this requires the `--network=host` command, for example:
+
+```sh
+docker run --network=host ethdo chain status
+```
+
+Alternatively, if the beacon node is running in a separate docker container a shared network can be created with `docker network create eth2` and accessed by adding `--network=eth2` added to both the beacon node and `ethdo` containers.
+
 ## Usage
 
 ethdo contains a large number of features that are useful for day-to-day interactions with the Ethereum 2 blockchain.
 
 ### Wallets and accounts
 
-ethdo uses the [go-eth2-wallet](https://github.com/wealdtech/go-eth2-wallet) system to provide unified access to different wallet types.
+ethdo uses the [go-eth2-wallet](https://github.com/wealdtech/go-eth2-wallet) system to provide unified access to different wallet types.  When on the filesystem the locations of the created wallets and accounts are:
+
+    - for Linux: $HOME/.config/ethereum2/wallets
+    - for OSX: $HOME/Library/Application Support/ethereum2/wallets
+    - for Windows: %APPDATA%\ethereum2\wallets
+
+If using the filesystem store, the additional parameter `basedir` can be supplied to change this location.
+
+> If using docker as above you can make this directory accessible to docker to make wallets and accounts persistent.  For example, for linux you could use the following command to list your wallets on Linux:
+>
+> ```
+> docker run -v $HOME/.config/ethereum2/wallets:/data ethdo --basedir=/data wallet list
+> ```
+>
+> This will allow you to use `ethdo` with or without docker, with the same location for wallets and accounts.
 
 All ethdo comands take the following parameters:
 
-  - `store`: the name of the storage system for wallets.  This can be one of "filesystem" or "s3", and defaults to "filesystem"
+  - `store`: the name of the storage system for wallets.  This can be one of "filesystem" (for local storage of the wallet) or "s3" (for remote storage of the wallet on [Amazon's S3](https://aws.amazon.com/s3/) storage system), and defaults to "filesystem"
   - `storepassphrase`: the passphrase for the store.  If this is empty the store is unencrypted
   - `walletpassphrase`: the passphrase for the wallet.  This is required for some wallet-centric operations such as creating new accounts
   - `accountpassphrase`: the passphrase for the account.  This is required for some account-centric operations such as signing data
@@ -72,184 +125,37 @@ If set, the `--debug` argument will output additional information about the oper
 
 Commands will have an exit status of 0 on success and 1 on failure.  The specific definition of success is specified in the help for each command.
 
-### `wallet` commands
+## Rules for account passphrases
 
-#### `accounts`
+Account passphrases are used in various places in `ethdo`.  Where they are used, the following rules apply:
 
-`ethdo wallet accouts` lists the accounts within a wallet.  
+  - commands that require passphrases to operate, for example unlocking an account, can be supplied with multiple passphrases.  If they are, then each passphrase is tried until one succeeds or they all fail
+  - commands that require passphrases to create, for example creating an account, must be supplied with a single passphrase.  If more than one passphrase is supplied the command will fail
 
-```sh
-$ ethdo wallet accounts --wallet="Personal wallet"
-Auctions
-Operations
-Spending
-```
+In addition, the following rules apply to passphrases supplied on the command line:
 
-With the `--verbose` flag this will provide the public key of the accounts.
+  - passphrases **must not** start with `0x`
+  - passphrases **must not** contain the comma (,) character
 
-```sh
-$ ethdo wallet accounts --wallet="Personal wallet" --verbose
-Auctions: 0x812f340269c315c1d882ae7c13cdaddf862dbdbd482b1836798b2070160dd1e194088cc6f39347782028d1e56bd18674
-Operations: 0x8e2f9e8cc29658ff37ecc30e95a0807579b224586c185d128cb7a7490784c1ad9b0ab93dbe604ab075b40079931e6670
-Spending: 0x85dfc6dcee4c9da36f6473ec02fda283d6c920c641fc8e3a76113c5c227d4aeeb100efcfec977b12d20d571907d05650
-```
-#### `create`
+# Commands
 
-`ethdo wallet create` creates a new wallet with the given parameters.  Options for creating a wallet include:
-  - `wallet`: the name of the wallet to create (defaults to "primary")
-  - `type`: the type of wallet to create.  This can be either "nd" for a non-deterministic wallet, where private keys are generated randomly, or "hd" for a hierarchical deterministic wallet, where private keys are generated from a seed and path as per [ERC-2333](https://github.com/CarlBeek/EIPs/blob/bls_path/EIPS/eip-2334.md) (defaults to "nd")
-  - `walletpassphrase`: the passphrase for of the wallet.  This is required for hierarchical deterministic wallets, to protect the seed
+Command information, along with sample outputs and optional arguments, is available in [the usage section](https://github.com/wealdtech/ethdo/blob/master/docs/usage.md).
 
-```sh
-$ ethdo wallet create --wallet="Personal wallet" --type="hd" --walletpassphrase="my wallet secret"
-```
+# HOWTO
 
-#### `export`
-
-`ethdo wallet export` exports the wallet and all of its accounts.  Options for exporting a wallet include:
-  - `wallet`: the name of the wallet to export (defaults to "primary")
-  - `exportpassphrase`: the passphrase with which to encrypt the wallet backup
-
-```sh
-$ ethdo wallet export --wallet="Personal wallet" --exportpassphrase="my export secret"
-0x01c7a27ad40d45b4ae5be5f...
-```
-
-The encrypted wallet export is written to the console; it can be redirected to store it in a file.
-
-```sh
-$ ethdo wallet export --wallet="Personal wallet" --exportpassphrase="my export secret" >export.dat
-```
-
-#### `import`
-
-`ethdo wallet import` imports a wallet and all of its accounts exported by `ethdo wallet export`.  Options for importing a wallet include:
-  - `importdata`: the data exported by `ethdo wallet export`
-  - `importpassphrase`: the passphrase that was provided to `ethdo wallet export` to encrypt the data
-
-```sh
-$ ethdo wallet import --importdata="0x01c7a27ad40d45b4ae5be5f..." --importpassphrase="my export secret"
-```
-
-The encrypted wallet export can be read from a file.  For example with Unix systems:
-
-```sh
-$ ethdo wallet import --importdata=`cat export.dat` --importpassphrase="my export secret"
-```
-
-#### `info`
-
-`ethdo wallet info` provides information about a given wallet.  Options include:
-  - `wallet`: the name of the wallet
-
-```sh
-$ ethdo wallet info --wallet="Personal wallet"
-Type: hierarchical deterministic
-Accounts: 3
-```
-
-#### `list`
-
-`ethdo wallet list` lists all wallets in the store.
-
-```sh
-$ ethdo wallet list
-Personal wallet
-```
-
-**N.B.** encrypted wallets will not show up in this list unless the correct passphrase for the store is supplied.
-
-#### `seed`
-
-`ethdo wallet seed` provides the seed for hierarchical deterministic wallets.  Options include:
-  - `wallet`: the name of the wallet
-  - `walletpassphrase`: the passphrase for the wallet
-
-```sh
-$ ethdo wallet seed --wallet="Personal wallet" --walletpassphrase="my wallet secret"
-decorate false mail domain gain later motion chair tank muffin smoke involve witness bean shell urge team solve share truly shadow decorate jeans hen
-```
-
-### `account` commands
-
-Account commands focus on information about local accounts, generally those used by Geth and Parity but also those from hardware devices.
-
-#### `create`
-
-`ethdo account create` creates a new account with the given parameters.  Options for creating an account include:
-  - `account`: the name of the account to create
-  - `passphrase`: the passphrase for the account
-
-Note that for hierarchical deterministic wallets you will also need to supply `--walletpassphrase` to unlock the wallet seed.
-
-```sh
-$ ethdo account create --account="Personal wallet/Operations" --walletpassphrase="my wallet secret" --passphrase="my account secret"
-```
-
-#### `info`
-
-`ethdo account info` provides information about the given account.  Options include:
-  - `account`: the name of the account on which to obtain information
-
-```sh
-$ ethdo account info --account="Personal wallet/Operations"
-Public key: 0x8e2f9e8cc29658ff37ecc30e95a0807579b224586c185d128cb7a7490784c1ad9b0ab93dbe604ab075b40079931e6670
-```
-
-### `signature` commands
-
-Signature commands focus on generation and verification of data signatures.
-
-### `signature sign`
-
-`ethdo signature sign` signs provided data.  Options include:
-  - `data`: the data to sign, as a hex string
-  - `domain`: the domain in which to sign the data.  This is an 8-byte hex string (default 0x0000000000000000)
-  - `account`: the account to sign the data
-  - `passphrase`: the passphrase for the account
-
-```sh
-$ ethdo signature sign --data="0x08140077a94642919041503caf5cc1795b23ecf2" --account="Personal wallet/Operations" --passphrase="my account secret"
-0x89abe2e544ef3eafe397db036103b1d066ba86497f36ed4ab0264162eadc89c7744a2a08d43cec91df128660e70ecbbe11031b4c2e53682d2b91e67b886429bf8fac9bad8c7b63c5f231cc8d66b1377e06e27138b1ddc64b27c6e593e07ebb4b
-```
-
-### `signature verify`
-
-`ethdo signature verify` verifies signed data.  Options include:
-  - `data`: the data whose signature to verify, as a hex string
-  - `signature`: the signature to verify, as a hex string
-  - `account`: the account which signed the data (if available as an account)
-  - `signer`: the public key of the account which signed the data (if not available as an account)
-
-```sh
-$ ethdo signature verify --data="0x08140077a94642919041503caf5cc1795b23ecf2" --signature="0x89abe2e544ef3eafe397db036103b1d066ba86497f36ed4ab0264162eadc89c7744a2a08d43cec91df128660e70ecbbe11031b4c2e53682d2b91e67b886429bf8fac9bad8c7b63c5f231cc8d66b1377e06e27138b1ddc64b27c6e593e07ebb4b" --account="Personal wallet/Operations"
-Verified
-$ ethdo signature verify --data="0x08140077a94642919041503caf5cc1795b23ecf2" --signature="0x89abe2e544ef3eafe397db036103b1d066ba86497f36ed4ab0264162eadc89c7744a2a08d43cec91df128660e70ecbbe11031b4c2e53682d2b91e67b886429bf8fac9bad8c7b63c5f231cc8d66b1377e06e27138b1ddc64b27c6e593e07ebb4b" --account="Personal wallet/Auctions"
-Not verified
-$ ethdo signature verify --data="0x08140077a94642919041503caf5cc1795b23ecf2" --signature="0x89abe2e544ef3eafe397db036103b1d066ba86497f36ed4ab0264162eadc89c7744a2a08d43cec91df128660e70ecbbe11031b4c2e53682d2b91e67b886429bf8fac9bad8c7b63c5f231cc8d66b1377e06e27138b1ddc64b27c6e593e07ebb4b" --signer="0x8e2f9e8cc29658ff37ecc30e95a0807579b224586c185d128cb7a7490784c1ad9b0ab93dbe604ab075b40079931e6670"
-Verified
-```
-
-The same rules apply to `ethereal signature verify` as those in `ethereal signature sign` above.
-
-### `version`
-
-`ethdo version` provides the current version of ethdo.  For example:
-
-```sh
-$ ethdo version
-1.0.0
-```
+There is a [HOWTO](https://github.com/wealdtech/ethdo/blob/master/docs/howto.md) that covers details about how to carry out various common tasks.
 
 ## Maintainers
 
 Jim McDonald: [@mcdee](https://github.com/mcdee).
 
+Special thanks to [@SuburbanDad](https://github.com/SuburbanDad) for updating xgo to allow for cross-compilation of `ethdo` releaes.
+
 ## Contribute
 
 Contributions welcome. Please check out [the issues](https://github.com/wealdtech/ethdo/issues).
 
 ## License
 
-[Apache-2.0](LICENSE) © 2019 Weald Technology Trading Ltd
+[Apache-2.0](LICENSE) © 2019, 2020 Weald Technology Trading Ltd
 

cmd/accountcreate.go

@@ -1,4 +1,4 @@
-// Copyright © 2019 Weald Technology Trading
+// Copyright © 2019, 2020 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -14,10 +14,14 @@
 package cmd
 
 import (
+	"context"
 	"fmt"
 	"os"
 
 	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	e2wallet "github.com/wealdtech/go-eth2-wallet"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
 )
 
 var accountCreateCmd = &cobra.Command{
@@ -29,33 +33,62 @@ var accountCreateCmd = &cobra.Command{
 
 In quiet mode this will return 0 if the account is created successfully, otherwise 1.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		assert(rootAccount != "", "--account is required")
-		assert(rootAccountPassphrase != "", "--passphrase is required")
+		assert(viper.GetString("account") != "", "--account is required")
 
-		w, err := walletFromPath(rootAccount)
+		wallet, err := openWallet()
 		errCheck(err, "Failed to access wallet")
-
-		if w.Type() == "hierarchical deterministic" {
-			assert(rootWalletPassphrase != "", "--walletpassphrase is required to create new accounts with hierarchical deterministic wallets")
+		outputIf(debug, fmt.Sprintf("Opened wallet %q of type %s", wallet.Name(), wallet.Type()))
+		if wallet.Type() == "hierarchical deterministic" {
+			assert(getWalletPassphrase() != "", "walletpassphrase is required to create new accounts with hierarchical deterministic wallets")
+		}
+		locker, isLocker := wallet.(e2wtypes.WalletLocker)
+		if isLocker {
+			ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+			defer cancel()
+			errCheck(locker.Unlock(ctx, []byte(getWalletPassphrase())), "Failed to unlock wallet")
 		}
-		_, err = accountFromPath(rootAccount)
-		assert(err != nil, "Account already exists")
 
-		err = w.Unlock([]byte(rootWalletPassphrase))
-		errCheck(err, "Failed to unlock wallet")
+		_, accountName, err := e2wallet.WalletAndAccountNames(viper.GetString("account"))
+		errCheck(err, "Failed to obtain account name")
 
-		_, accountName, err := walletAndAccountNamesFromPath(rootAccount)
-		errCheck(err, "Failed to obtain accout name")
-
-		account, err := w.CreateAccount(accountName, []byte(rootAccountPassphrase))
+		var account e2wtypes.Account
+		if viper.GetUint("participants") > 0 {
+			// Want a distributed account.
+			distributedCreator, isDistributedCreator := wallet.(e2wtypes.WalletDistributedAccountCreator)
+			assert(isDistributedCreator, "Wallet does not support distributed account creation")
+			outputIf(debug, fmt.Sprintf("Distributed account has %d/%d threshold", viper.GetUint32("signing-threshold"), viper.GetUint32("participants")))
+			ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+			defer cancel()
+			account, err = distributedCreator.CreateDistributedAccount(ctx, accountName, viper.GetUint32("participants"), viper.GetUint32("signing-threshold"), []byte(getPassphrase()))
+		} else {
+			// Want a standard account.
+			creator, isCreator := wallet.(e2wtypes.WalletAccountCreator)
+			assert(isCreator, "Wallet does not support account creation")
+			ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+			defer cancel()
+			account, err = creator.CreateAccount(ctx, accountName, []byte(getPassphrase()))
+		}
 		errCheck(err, "Failed to create account")
 
-		outputIf(verbose, fmt.Sprintf("0x%048x", account.PublicKey().Marshal()))
-		os.Exit(_exit_success)
+		if pubKeyProvider, ok := account.(e2wtypes.AccountCompositePublicKeyProvider); ok {
+			outputIf(verbose, fmt.Sprintf("%#x", pubKeyProvider.CompositePublicKey().Marshal()))
+		} else if pubKeyProvider, ok := account.(e2wtypes.AccountPublicKeyProvider); ok {
+			outputIf(verbose, fmt.Sprintf("%#x", pubKeyProvider.PublicKey().Marshal()))
+		}
+
+		os.Exit(_exitSuccess)
 	},
 }
 
 func init() {
 	accountCmd.AddCommand(accountCreateCmd)
 	accountFlags(accountCreateCmd)
+	accountCreateCmd.Flags().Uint32("participants", 0, "Number of participants (for distributed accounts)")
+	if err := viper.BindPFlag("participants", accountCreateCmd.Flags().Lookup("participants")); err != nil {
+		panic(err)
+	}
+	accountCreateCmd.Flags().Uint32("signing-threshold", 0, "Signing threshold (for distributed accounts)")
+	if err := viper.BindPFlag("signing-threshold", accountCreateCmd.Flags().Lookup("signing-threshold")); err != nil {
+		panic(err)
+	}
 }

cmd/accountimport.go

@@ -14,12 +14,15 @@
 package cmd
 
 import (
+	"context"
 	"fmt"
 	"os"
 
 	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
 	"github.com/wealdtech/go-bytesutil"
-	types "github.com/wealdtech/go-eth2-wallet-types"
+	e2wallet "github.com/wealdtech/go-eth2-wallet"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
 )
 
 var accountImportKey string
@@ -33,33 +36,43 @@ var accountImportCmd = &cobra.Command{
 
 In quiet mode this will return 0 if the account is imported successfully, otherwise 1.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		assert(rootAccount != "", "--account is required")
-		assert(rootAccountPassphrase != "", "--passphrase is required")
+		assert(!remote, "account import not available with remote wallets")
+		assert(viper.GetString("account") != "", "--account is required")
+		passphrase := getPassphrase()
 		assert(accountImportKey != "", "--key is required")
 
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
+
 		key, err := bytesutil.FromHexString(accountImportKey)
 		errCheck(err, "Invalid key")
 
-		w, err := walletFromPath(rootAccount)
+		w, err := walletFromPath(viper.GetString("account"))
 		errCheck(err, "Failed to access wallet")
 
-		_, ok := w.(types.WalletAccountImporter)
+		_, ok := w.(e2wtypes.WalletAccountImporter)
 		assert(ok, fmt.Sprintf("wallets of type %q do not allow importing accounts", w.Type()))
 
-		_, err = accountFromPath(rootAccount)
+		_, err = accountFromPath(ctx, viper.GetString("account"))
 		assert(err != nil, "Account already exists")
 
-		err = w.Unlock([]byte(rootWalletPassphrase))
-		errCheck(err, "Failed to unlock wallet")
+		locker, isLocker := w.(e2wtypes.WalletLocker)
+		if isLocker {
+			errCheck(locker.Unlock(ctx, []byte(getWalletPassphrase())), "Failed to unlock wallet")
+		}
 
-		_, accountName, err := walletAndAccountNamesFromPath(rootAccount)
-		errCheck(err, "Failed to obtain accout name")
+		_, accountName, err := e2wallet.WalletAndAccountNames(viper.GetString("account"))
+		errCheck(err, "Failed to obtain account name")
 
-		account, err := w.(types.WalletAccountImporter).ImportAccount(accountName, key, []byte(rootAccountPassphrase))
+		account, err := w.(e2wtypes.WalletAccountImporter).ImportAccount(ctx, accountName, key, []byte(passphrase))
 		errCheck(err, "Failed to create account")
 
-		outputIf(verbose, fmt.Sprintf("0x%048x", account.PublicKey().Marshal()))
-		os.Exit(_exit_success)
+		pubKey, err := bestPublicKey(account)
+		if err == nil {
+			outputIf(verbose, fmt.Sprintf("%#x", pubKey.Marshal()))
+		}
+
+		os.Exit(_exitSuccess)
 	},
 }
 

cmd/accountinfo.go

@@ -1,4 +1,4 @@
-// Copyright © 2019 Weald Technology Trading
+// Copyright © 2019, 2020 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -14,10 +14,16 @@
 package cmd
 
 import (
+	"context"
 	"fmt"
 	"os"
 
 	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	e2types "github.com/wealdtech/go-eth2-types/v2"
+	util "github.com/wealdtech/go-eth2-util"
+	e2wallet "github.com/wealdtech/go-eth2-wallet"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
 )
 
 var accountInfoCmd = &cobra.Command{
@@ -29,15 +35,52 @@ var accountInfoCmd = &cobra.Command{
 
 In quiet mode this will return 0 if the account exists, otherwise 1.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		assert(rootAccount != "", "--account is required")
+		assert(viper.GetString("account") != "", "--account is required")
 
-		account, err := accountFromPath(rootAccount)
+		wallet, err := openWallet()
 		errCheck(err, "Failed to access wallet")
 
+		_, accountName, err := e2wallet.WalletAndAccountNames(viper.GetString("account"))
+		errCheck(err, "Failed to obtain account name")
+
+		accountByNameProvider, isAccountByNameProvider := wallet.(e2wtypes.WalletAccountByNameProvider)
+		assert(isAccountByNameProvider, "wallet cannot obtain accounts by name")
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
+		account, err := accountByNameProvider.AccountByName(ctx, accountName)
+		errCheck(err, "Failed to obtain account")
+
+		// Disallow wildcards (for now)
+		assert(fmt.Sprintf("%s/%s", wallet.Name(), account.Name()) == viper.GetString("account"), "Mismatched account name")
+
+		if quiet {
+			os.Exit(_exitSuccess)
+		}
+
 		outputIf(verbose, fmt.Sprintf("UUID: %v", account.ID()))
-		outputIf(!quiet, fmt.Sprintf("Public key: %#048x", account.PublicKey().Marshal()))
-		outputIf(verbose && account.Path() != "", fmt.Sprintf("Path: %s", account.Path()))
-		os.Exit(_exit_success)
+		var withdrawalPubKey e2types.PublicKey
+		if pubKeyProvider, ok := account.(e2wtypes.AccountPublicKeyProvider); ok {
+			fmt.Printf("Public key: %#x\n", pubKeyProvider.PublicKey().Marshal())
+			// May be overwritten later, but grab it for now.
+			withdrawalPubKey = pubKeyProvider.PublicKey()
+		}
+		if distributedAccount, ok := account.(e2wtypes.DistributedAccount); ok {
+			fmt.Printf("Composite public key: %#x\n", distributedAccount.CompositePublicKey().Marshal())
+			fmt.Printf("Signing threshold: %d/%d\n", distributedAccount.SigningThreshold(), len(distributedAccount.Participants()))
+			withdrawalPubKey = distributedAccount.CompositePublicKey()
+		}
+		if verbose {
+			withdrawalCredentials := util.SHA256(withdrawalPubKey.Marshal())
+			withdrawalCredentials[0] = byte(0) // BLS_WITHDRAWAL_PREFIX
+			fmt.Printf("Withdrawal credentials: %#x\n", withdrawalCredentials)
+		}
+		if pathProvider, ok := account.(e2wtypes.AccountPathProvider); ok {
+			if pathProvider.Path() != "" {
+				fmt.Printf("Path: %s\n", pathProvider.Path())
+			}
+		}
+
+		os.Exit(_exitSuccess)
 	},
 }
 

cmd/accountkey.go

@@ -14,11 +14,13 @@
 package cmd
 
 import (
+	"context"
 	"fmt"
 	"os"
 
 	"github.com/spf13/cobra"
-	types "github.com/wealdtech/go-eth2-wallet-types"
+	"github.com/spf13/viper"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
 )
 
 // accountKeyCmd represents the account key command
@@ -31,23 +33,35 @@ var accountKeyCmd = &cobra.Command{
 
 In quiet mode this will return 0 if the key can be obtained, otherwise 1.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		assert(rootAccount != "", "--account is required")
-		account, err := accountFromPath(rootAccount)
+		assert(!remote, "account keys not available with remote wallets")
+		assert(viper.GetString("account") != "", "--account is required")
+
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
+
+		account, err := accountFromPath(ctx, viper.GetString("account"))
 		errCheck(err, "Failed to access account")
 
-		_, ok := account.(types.AccountPrivateKeyProvider)
-		assert(ok, fmt.Sprintf("account %q does not provide its private key", rootAccount))
+		privateKeyProvider, isPrivateKeyProvider := account.(e2wtypes.AccountPrivateKeyProvider)
+		assert(isPrivateKeyProvider, fmt.Sprintf("account %q does not provide its private key", viper.GetString("account")))
 
-		assert(rootAccountPassphrase != "", "--passphrase is required")
-		err = account.Unlock([]byte(rootAccountPassphrase))
-		errCheck(err, "Failed to unlock account to obtain private key")
-		defer account.Lock()
-		privateKey, err := account.(types.AccountPrivateKeyProvider).PrivateKey()
+		if locker, isLocker := account.(e2wtypes.AccountLocker); isLocker {
+			unlocked := false
+			for _, passphrase := range getPassphrases() {
+				err = locker.Unlock(ctx, []byte(passphrase))
+				if err == nil {
+					unlocked = true
+					break
+				}
+			}
+			assert(unlocked, "Failed to unlock account to obtain private key")
+			defer relockAccount(locker)
+		}
+		privateKey, err := privateKeyProvider.PrivateKey(ctx)
 		errCheck(err, "Failed to obtain private key")
-		account.Lock()
 
-		outputIf(!quiet, fmt.Sprintf("%#064x", privateKey.Marshal()))
-		os.Exit(_exit_success)
+		outputIf(!quiet, fmt.Sprintf("%#x", privateKey.Marshal()))
+		os.Exit(_exitSuccess)
 	},
 }
 

cmd/accountlock.go

@@ -0,0 +1,62 @@
+// Copyright © 2019, 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"context"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	e2wallet "github.com/wealdtech/go-eth2-wallet"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
+)
+
+var accountLockCmd = &cobra.Command{
+	Use:   "lock",
+	Short: "Lock a remote account",
+	Long: `Lock a remote account.  For example:
+
+    ethdo account lock --account="primary/my funds"
+
+In quiet mode this will return 0 if the account is locked, otherwise 1.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		assert(viper.GetString("account") != "", "--account is required")
+
+		wallet, err := openWallet()
+		errCheck(err, "Failed to access wallet")
+
+		_, accountName, err := e2wallet.WalletAndAccountNames(viper.GetString("account"))
+		errCheck(err, "Failed to obtain account name")
+
+		accountByNameProvider, isAccountByNameProvider := wallet.(e2wtypes.WalletAccountByNameProvider)
+		assert(isAccountByNameProvider, "wallet cannot obtain accounts by name")
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
+		account, err := accountByNameProvider.AccountByName(ctx, accountName)
+		errCheck(err, "Failed to obtain account")
+
+		locker, isLocker := account.(e2wtypes.AccountLocker)
+		assert(isLocker, "Account does not support locking")
+
+		ctx, cancel = context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		err = locker.Lock(ctx)
+		cancel()
+		errCheck(err, "Failed to lock account")
+	},
+}
+
+func init() {
+	accountCmd.AddCommand(accountLockCmd)
+	accountFlags(accountLockCmd)
+}

cmd/accountunlock.go

@@ -0,0 +1,73 @@
+// Copyright © 2019, 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"context"
+	"os"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	e2wallet "github.com/wealdtech/go-eth2-wallet"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
+)
+
+var accountUnlockCmd = &cobra.Command{
+	Use:   "unlock",
+	Short: "Unlock a remote account",
+	Long: `Unlock a remote account.  For example:
+
+    ethdo account unlock --account="primary/my funds" --passphrase="secret"
+
+In quiet mode this will return 0 if the account is unlocked, otherwise 1.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		assert(viper.GetString("account") != "", "--account is required")
+
+		wallet, err := openWallet()
+		errCheck(err, "Failed to access wallet")
+
+		_, accountName, err := e2wallet.WalletAndAccountNames(viper.GetString("account"))
+		errCheck(err, "Failed to obtain account name")
+
+		accountByNameProvider, isAccountByNameProvider := wallet.(e2wtypes.WalletAccountByNameProvider)
+		assert(isAccountByNameProvider, "wallet cannot obtain accounts by name")
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
+		account, err := accountByNameProvider.AccountByName(ctx, accountName)
+		errCheck(err, "Failed to obtain account")
+
+		locker, isLocker := account.(e2wtypes.AccountLocker)
+		assert(isLocker, "Account does not support unlocking")
+
+		unlocked := false
+		for _, passphrase := range getPassphrases() {
+			ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+			err := locker.Unlock(ctx, []byte(passphrase))
+			cancel()
+			if err == nil {
+				// Success.
+				unlocked = true
+				break
+			}
+		}
+
+		assert(unlocked, "Failed to unlock account")
+		os.Exit(_exitSuccess)
+	},
+}
+
+func init() {
+	accountCmd.AddCommand(accountUnlockCmd)
+	accountFlags(accountUnlockCmd)
+}

cmd/accountwithdrawalcredentials.go

@@ -0,0 +1,83 @@
+// Copyright © 2019, 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"context"
+	"encoding/hex"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	util "github.com/wealdtech/go-eth2-util"
+	e2wallet "github.com/wealdtech/go-eth2-wallet"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
+)
+
+var accountWithdrawalCredentialsCmd = &cobra.Command{
+	Use:   "withdrawalcredentials",
+	Short: "Provide withdrawal credentials for an account",
+	Long: `Provide withdrawal credentials for an account.  For example:
+
+    ethdo account withdrawalcredentials --account="Validators/1"
+
+In quiet mode this will return 0 if the account exists, otherwise 1.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
+
+		assert(viper.GetString("account") != "" || viper.GetString("pubkey") != "", "account or pubkey is required")
+
+		var pubKey []byte
+		if viper.GetString("pubkey") != "" {
+			var err error
+			pubKey, err = hex.DecodeString(strings.TrimPrefix(viper.GetString("pubkey"), "0x"))
+			errCheck(err, "Failed to decode supplied public key")
+		} else {
+			wallet, err := openWallet()
+			errCheck(err, "Failed to access wallet")
+
+			_, accountName, err := e2wallet.WalletAndAccountNames(viper.GetString("account"))
+			errCheck(err, "Failed to obtain account name")
+
+			accountByNameProvider, isAccountByNameProvider := wallet.(e2wtypes.WalletAccountByNameProvider)
+			assert(isAccountByNameProvider, "wallet cannot obtain accounts by name")
+			account, err := accountByNameProvider.AccountByName(ctx, accountName)
+			errCheck(err, "Failed to obtain account")
+
+			key, err := bestPublicKey(account)
+			errCheck(err, "Account does not provide a public key")
+			pubKey = key.Marshal()
+		}
+
+		if quiet {
+			os.Exit(_exitSuccess)
+		}
+
+		withdrawalCredentials := util.SHA256(pubKey)
+		withdrawalCredentials[0] = byte(0) // BLS_WITHDRAWAL_PREFIX
+		fmt.Printf("%#x\n", withdrawalCredentials)
+	},
+}
+
+func init() {
+	accountCmd.AddCommand(accountWithdrawalCredentialsCmd)
+	accountFlags(accountWithdrawalCredentialsCmd)
+	accountWithdrawalCredentialsCmd.Flags().String("pubkey", "", "Public key (overrides account)")
+	if err := viper.BindPFlag("pubkey", accountCreateCmd.Flags().Lookup("pubkey")); err != nil {
+		panic(err)
+	}
+}

cmd/block.go

@@ -0,0 +1,32 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+)
+
+// blockCmd represents the block command
+var blockCmd = &cobra.Command{
+	Use:   "block",
+	Short: "Obtain information about an Ethereum 2 block",
+	Long:  "Obtain information about an Ethereum 2 block",
+}
+
+func init() {
+	RootCmd.AddCommand(blockCmd)
+}
+
+func blockFlags(cmd *cobra.Command) {
+}

cmd/blockinfo.go

@@ -0,0 +1,283 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"bytes"
+	"encoding/hex"
+	"fmt"
+	"os"
+	"sort"
+	"strings"
+	"time"
+	"unicode/utf8"
+
+	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
+	"github.com/prysmaticlabs/go-bitfield"
+	"github.com/prysmaticlabs/go-ssz"
+	"github.com/spf13/cobra"
+	"github.com/wealdtech/ethdo/grpc"
+	string2eth "github.com/wealdtech/go-string2eth"
+)
+
+var blockInfoSlot int64
+var blockInfoStream bool
+
+var blockInfoCmd = &cobra.Command{
+	Use:   "info",
+	Short: "Obtain information about a block",
+	Long: `Obtain information about a block.  For example:
+
+    ethdo block info --slot=12345
+
+In quiet mode this will return 0 if the block information is present and not skipped, otherwise 1.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		err := connect()
+		errCheck(err, "Failed to obtain connection to Ethereum 2 beacon chain block")
+
+		config, err := grpc.FetchChainConfig(eth2GRPCConn)
+		errCheck(err, "Failed to obtain beacon chain configuration")
+		slotsPerEpoch := config["SlotsPerEpoch"].(uint64)
+		secondsPerSlot := config["SecondsPerSlot"].(uint64)
+
+		genesisTime, err := grpc.FetchGenesisTime(eth2GRPCConn)
+		errCheck(err, "Failed to obtain beacon chain genesis")
+
+		assert(blockInfoStream || blockInfoSlot != 0, "--slot or --stream is required")
+		assert(!blockInfoStream || blockInfoSlot == -1, "--slot and --stream are not supported together")
+
+		var slot uint64
+		if blockInfoSlot < 0 {
+			slot, err = grpc.FetchLatestFilledSlot(eth2GRPCConn)
+			errCheck(err, "Failed to obtain slot of latest block")
+		} else {
+			slot = uint64(blockInfoSlot)
+		}
+		assert(slot > 0, "slot must be greater than 0")
+
+		signedBlock, err := grpc.FetchBlock(eth2GRPCConn, slot)
+		errCheck(err, "Failed to obtain block")
+		if signedBlock == nil {
+			outputIf(!quiet, "No block at that slot")
+			os.Exit(_exitFailure)
+		}
+		outputBlock(signedBlock, genesisTime, secondsPerSlot, slotsPerEpoch)
+
+		if blockInfoStream {
+			stream, err := grpc.StreamBlocks(eth2GRPCConn)
+			errCheck(err, "Failed to obtain block stream")
+			for {
+				fmt.Println()
+				signedBlock, err := stream.Recv()
+				errCheck(err, "Failed to obtain block")
+				if signedBlock != nil {
+					outputBlock(signedBlock, genesisTime, secondsPerSlot, slotsPerEpoch)
+				}
+			}
+		}
+
+		os.Exit(_exitSuccess)
+	},
+}
+
+func outputBlock(signedBlock *ethpb.SignedBeaconBlock, genesisTime time.Time, secondsPerSlot uint64, slotsPerEpoch uint64) {
+	block := signedBlock.Block
+	body := block.Body
+
+	// General info.
+	bodyRoot, err := ssz.HashTreeRoot(block)
+	errCheck(err, "Failed to calculate block body root")
+	fmt.Printf("Slot: %d\n", block.Slot)
+	fmt.Printf("Epoch: %d\n", block.Slot/slotsPerEpoch)
+	fmt.Printf("Timestamp: %v\n", time.Unix(genesisTime.Unix()+int64(block.Slot*secondsPerSlot), 0))
+	fmt.Printf("Block root: %#x\n", bodyRoot)
+	outputIf(verbose, fmt.Sprintf("Parent root: %#x", block.ParentRoot))
+	outputIf(verbose, fmt.Sprintf("State root: %#x", block.StateRoot))
+	if len(body.Graffiti) > 0 && hex.EncodeToString(body.Graffiti) != "0000000000000000000000000000000000000000000000000000000000000000" {
+		if utf8.Valid(body.Graffiti) {
+			fmt.Printf("Graffiti: %s\n", string(body.Graffiti))
+		} else {
+			fmt.Printf("Graffiti: %#x\n", body.Graffiti)
+		}
+	}
+
+	// Eth1 data.
+	eth1Data := body.Eth1Data
+	outputIf(verbose, fmt.Sprintf("Ethereum 1 deposit count: %d", eth1Data.DepositCount))
+	outputIf(verbose, fmt.Sprintf("Ethereum 1 deposit root: %#x", eth1Data.DepositRoot))
+	outputIf(verbose, fmt.Sprintf("Ethereum 1 block hash: %#x", eth1Data.BlockHash))
+
+	validatorCommittees := make(map[uint64][][]uint64)
+
+	// Attestations.
+	fmt.Printf("Attestations: %d\n", len(body.Attestations))
+	if verbose {
+		for i, att := range body.Attestations {
+			fmt.Printf("\t%d:\n", i)
+
+			// Fetch committees for this epoch if not already obtained.
+			committees, exists := validatorCommittees[att.Data.Slot]
+			if !exists {
+				attestationEpoch := att.Data.Slot / slotsPerEpoch
+				epochCommittees, err := grpc.FetchValidatorCommittees(eth2GRPCConn, attestationEpoch)
+				errCheck(err, "Failed to obtain committees")
+				for k, v := range epochCommittees {
+					validatorCommittees[k] = v
+				}
+				committees = validatorCommittees[att.Data.Slot]
+			}
+
+			fmt.Printf("\t\tCommittee index: %d\n", att.Data.CommitteeIndex)
+			fmt.Printf("\t\tAttesters: %d/%d\n", att.AggregationBits.Count(), att.AggregationBits.Len())
+			fmt.Printf("\t\tAggregation bits: %s\n", bitsToString(att.AggregationBits))
+			fmt.Printf("\t\tAttesting indices: %s\n", attestingIndices(att.AggregationBits, committees[att.Data.CommitteeIndex]))
+			fmt.Printf("\t\tSlot: %d\n", att.Data.Slot)
+			fmt.Printf("\t\tBeacon block root: %#x\n", att.Data.BeaconBlockRoot)
+			fmt.Printf("\t\tSource epoch: %d\n", att.Data.Source.Epoch)
+			fmt.Printf("\t\tSource root: %#x\n", att.Data.Source.Root)
+			fmt.Printf("\t\tTarget epoch: %d\n", att.Data.Target.Epoch)
+			fmt.Printf("\t\tTarget root: %#x\n", att.Data.Target.Root)
+		}
+	}
+
+	// Attester slashings.
+	fmt.Printf("Attester slashings: %d\n", len(body.AttesterSlashings))
+	if verbose {
+		for i, slashing := range body.AttesterSlashings {
+			// Say what was slashed.
+			att1 := slashing.Attestation_1
+			outputIf(debug, fmt.Sprintf("Attestation 1 attesting indices are %v", att1.AttestingIndices))
+			att2 := slashing.Attestation_2
+			outputIf(debug, fmt.Sprintf("Attestation 2 attesting indices are %v", att2.AttestingIndices))
+			slashedIndices := intersection(att1.AttestingIndices, att2.AttestingIndices)
+			if len(slashedIndices) == 0 {
+				continue
+			}
+
+			fmt.Printf("\t%d:\n", i)
+
+			fmt.Println("\t\tSlashed validators:")
+			for _, slashedIndex := range slashedIndices {
+				validator, err := grpc.FetchValidatorByIndex(eth2GRPCConn, slashedIndex)
+				errCheck(err, "Failed to obtain validator information")
+				fmt.Printf("\t\t\t%#x (%d)\n", validator.PublicKey, slashedIndex)
+			}
+
+			// Say what caused the slashing.
+			if att1.Data.Target.Epoch == att2.Data.Target.Epoch {
+				fmt.Printf("\t\tDouble voted for same target epoch (%d):\n", att1.Data.Target.Epoch)
+				if !bytes.Equal(att1.Data.Target.Root, att2.Data.Target.Root) {
+					fmt.Printf("\t\t\tAttestation 1 target epoch root: %#x\n", att1.Data.Target.Root)
+					fmt.Printf("\t\t\tAttestation 2target epoch root: %#x\n", att2.Data.Target.Root)
+				}
+				if !bytes.Equal(att1.Data.BeaconBlockRoot, att2.Data.BeaconBlockRoot) {
+					fmt.Printf("\t\t\tAttestation 1 beacon block root: %#x\n", att1.Data.BeaconBlockRoot)
+					fmt.Printf("\t\t\tAttestation 2 beacon block root: %#x\n", att2.Data.BeaconBlockRoot)
+				}
+			} else if att1.Data.Source.Epoch < att2.Data.Source.Epoch &&
+				att1.Data.Target.Epoch > att2.Data.Target.Epoch {
+				fmt.Printf("\t\tSurround voted:\n")
+				fmt.Printf("\t\t\tAttestation 1 vote: %d->%d\n", att1.Data.Source.Epoch, att1.Data.Target.Epoch)
+				fmt.Printf("\t\t\tAttestation 2 vote: %d->%d\n", att2.Data.Source.Epoch, att2.Data.Target.Epoch)
+			}
+		}
+	}
+
+	fmt.Printf("Proposer slashings: %d\n", len(body.ProposerSlashings))
+	// TODO verbose proposer slashings.
+
+	// Deposits.
+	fmt.Printf("Deposits: %d\n", len(body.Deposits))
+	if verbose {
+		for i, deposit := range body.Deposits {
+			data := deposit.Data
+			fmt.Printf("\t%d:\n", i)
+			fmt.Printf("\t\tPublic key: %#x\n", data.PublicKey)
+			fmt.Printf("\t\tAmount: %s\n", string2eth.GWeiToString(data.Amount, true))
+			fmt.Printf("\t\tWithdrawal credentials: %#x\n", data.WithdrawalCredentials)
+			fmt.Printf("\t\tSignature: %#x\n", data.Signature)
+		}
+	}
+
+	// Voluntary exits.
+	fmt.Printf("Voluntary exits: %d\n", len(body.VoluntaryExits))
+	if verbose {
+		for i, voluntaryExit := range body.VoluntaryExits {
+			fmt.Printf("\t%d:\n", i)
+			validator, err := grpc.FetchValidatorByIndex(eth2GRPCConn, voluntaryExit.Exit.ValidatorIndex)
+			errCheck(err, "Failed to obtain validator information")
+			fmt.Printf("\t\tValidator: %#x (%d)\n", validator.PublicKey, voluntaryExit.Exit.ValidatorIndex)
+			fmt.Printf("\t\tEpoch: %d\n", voluntaryExit.Exit.Epoch)
+		}
+	}
+}
+
+// intersection returns a list of items common between the two sets.
+func intersection(set1 []uint64, set2 []uint64) []uint64 {
+	sort.Slice(set1, func(i, j int) bool { return set1[i] < set1[j] })
+	sort.Slice(set2, func(i, j int) bool { return set2[i] < set2[j] })
+	res := make([]uint64, 0)
+
+	set1Pos := 0
+	set2Pos := 0
+	for set1Pos < len(set1) && set2Pos < len(set2) {
+		switch {
+		case set1[set1Pos] < set2[set2Pos]:
+			set1Pos++
+		case set2[set2Pos] < set1[set1Pos]:
+			set2Pos++
+		default:
+			res = append(res, set1[set1Pos])
+			set1Pos++
+			set2Pos++
+		}
+	}
+
+	return res
+}
+
+func bitsToString(input bitfield.Bitlist) string {
+	bits := int(input.Len())
+
+	res := ""
+	for i := 0; i < bits; i++ {
+		if input.BitAt(uint64(i)) {
+			res = fmt.Sprintf("%s✓", res)
+		} else {
+			res = fmt.Sprintf("%s✕", res)
+		}
+		if i%8 == 7 {
+			res = fmt.Sprintf("%s ", res)
+		}
+	}
+	return strings.TrimSpace(res)
+}
+
+func attestingIndices(input bitfield.Bitlist, indices []uint64) string {
+	bits := int(input.Len())
+	res := ""
+	for i := 0; i < bits; i++ {
+		if input.BitAt(uint64(i)) {
+			res = fmt.Sprintf("%s%d ", res, indices[i])
+		}
+	}
+	return strings.TrimSpace(res)
+}
+
+func init() {
+	blockCmd.AddCommand(blockInfoCmd)
+	blockFlags(blockInfoCmd)
+	blockInfoCmd.Flags().Int64Var(&blockInfoSlot, "slot", -1, "the latest slot with a block")
+	blockInfoCmd.Flags().BoolVar(&blockInfoStream, "stream", false, "continually stream blocks as they arrive")
+}

cmd/chain.go

@@ -0,0 +1,32 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+)
+
+// chainCmd represents the chain command
+var chainCmd = &cobra.Command{
+	Use:   "chain",
+	Short: "Obtain information about an Ethereum 2 chain",
+	Long:  "Obtain information about an Ethereum 2 chain",
+}
+
+func init() {
+	RootCmd.AddCommand(chainCmd)
+}
+
+func chainFlags(cmd *cobra.Command) {
+}

cmd/chaininfo.go

@@ -0,0 +1,78 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/spf13/cobra"
+	"github.com/wealdtech/ethdo/grpc"
+)
+
+var chainInfoCmd = &cobra.Command{
+	Use:   "info",
+	Short: "Obtain information about a chain",
+	Long: `Obtain information about a chain.  For example:
+
+    ethdo chain info
+
+In quiet mode this will return 0 if the chain information can be obtained, otherwise 1.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		err := connect()
+		errCheck(err, "Failed to obtain connection to Ethereum 2 beacon chain node")
+		config, err := grpc.FetchChainConfig(eth2GRPCConn)
+		errCheck(err, "Failed to obtain beacon chain configuration")
+
+		genesisTime, err := grpc.FetchGenesisTime(eth2GRPCConn)
+		errCheck(err, "Failed to obtain genesis time")
+
+		if quiet {
+			os.Exit(_exitSuccess)
+		}
+
+		if genesisTime.Unix() == 0 {
+			fmt.Println("Genesis time: undefined")
+		} else {
+			fmt.Printf("Genesis time: %s\n", genesisTime.Format(time.UnixDate))
+			outputIf(verbose, fmt.Sprintf("Genesis timestamp: %v", genesisTime.Unix()))
+		}
+		outputIf(verbose, fmt.Sprintf("Genesis fork version: %0x", config["GenesisForkVersion"].([]byte)))
+		outputIf(verbose, fmt.Sprintf("Seconds per slot: %v", config["SecondsPerSlot"].(uint64)))
+		outputIf(verbose, fmt.Sprintf("Slots per epoch: %v", config["SlotsPerEpoch"].(uint64)))
+
+		os.Exit(_exitSuccess)
+	},
+}
+
+func init() {
+	chainCmd.AddCommand(chainInfoCmd)
+	chainFlags(chainInfoCmd)
+}
+
+func timestampToSlot(genesis int64, timestamp int64, secondsPerSlot uint64) uint64 {
+	if timestamp < genesis {
+		return 0
+	}
+	return uint64(timestamp-genesis) / secondsPerSlot
+}
+
+func slotToTimestamp(genesis int64, slot uint64, secondsPerSlot uint64) int64 {
+	return genesis + int64(slot*secondsPerSlot)
+}
+
+func epochToTimestamp(genesis int64, slot uint64, secondsPerSlot uint64, slotsPerEpoch uint64) int64 {
+	return genesis + int64(slot*secondsPerSlot*slotsPerEpoch)
+}

cmd/chainstatus.go

@@ -0,0 +1,112 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/spf13/cobra"
+	"github.com/wealdtech/ethdo/grpc"
+)
+
+var chainStatusSlot bool
+
+var chainStatusCmd = &cobra.Command{
+	Use:   "status",
+	Short: "Obtain status about a chain",
+	Long: `Obtain status about a chain.  For example:
+
+    ethdo chain status
+
+In quiet mode this will return 0 if the chain status can be obtained, otherwise 1.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		err := connect()
+		errCheck(err, "Failed to obtain connection to Ethereum 2 beacon chain node")
+		config, err := grpc.FetchChainConfig(eth2GRPCConn)
+		errCheck(err, "Failed to obtain beacon chain configuration")
+
+		genesisTime, err := grpc.FetchGenesisTime(eth2GRPCConn)
+		errCheck(err, "Failed to obtain genesis time")
+
+		info, err := grpc.FetchChainInfo(eth2GRPCConn)
+		errCheck(err, "Failed to obtain chain info")
+
+		if quiet {
+			os.Exit(_exitSuccess)
+		}
+
+		now := time.Now()
+		slot := timestampToSlot(genesisTime.Unix(), now.Unix(), config["SecondsPerSlot"].(uint64))
+		if chainStatusSlot {
+			fmt.Printf("Current slot: %d\n", slot)
+			fmt.Printf("Justified slot: %d\n", info.GetJustifiedSlot())
+			if verbose {
+				distance := slot - info.GetJustifiedSlot()
+				fmt.Printf("Justified slot distance: %d\n", distance)
+			}
+			fmt.Printf("Finalized slot: %d\n", info.GetFinalizedSlot())
+			if verbose {
+				distance := slot - info.GetFinalizedSlot()
+				fmt.Printf("Finalized slot distance: %d\n", distance)
+			}
+			if verbose {
+				fmt.Printf("Prior justified slot: %d\n", info.GetFinalizedSlot())
+				distance := slot - info.GetPreviousJustifiedSlot()
+				fmt.Printf("Prior justified slot distance: %d\n", distance)
+			}
+		} else {
+			slotsPerEpoch := config["SlotsPerEpoch"].(uint64)
+			epoch := slot / slotsPerEpoch
+			fmt.Printf("Current epoch: %d\n", epoch)
+			fmt.Printf("Justified epoch: %d\n", info.GetJustifiedEpoch())
+			if verbose {
+				distance := (slot - info.GetJustifiedSlot()) / slotsPerEpoch
+				fmt.Printf("Justified epoch distance: %d\n", distance)
+			}
+			fmt.Printf("Finalized epoch: %d\n", info.GetFinalizedEpoch())
+			if verbose {
+				distance := (slot - info.GetFinalizedSlot()) / slotsPerEpoch
+				fmt.Printf("Finalized epoch distance: %d\n", distance)
+			}
+			if verbose {
+				fmt.Printf("Prior justified epoch: %d\n", info.GetPreviousJustifiedEpoch())
+				distance := (slot - info.GetPreviousJustifiedSlot()) / slotsPerEpoch
+				fmt.Printf("Prior justified epoch distance: %d\n", distance)
+			}
+		}
+
+		if verbose {
+			slotsPerEpoch := config["SlotsPerEpoch"].(uint64)
+			secondsPerSlot := config["SecondsPerSlot"].(uint64)
+			epochStartSlot := (slot / slotsPerEpoch) * slotsPerEpoch
+			fmt.Printf("Epoch slots: %d-%d\n", epochStartSlot, epochStartSlot+slotsPerEpoch-1)
+			nextSlot := slotToTimestamp(genesisTime.Unix(), slot+1, secondsPerSlot)
+			fmt.Printf("Time until next slot: %2.1fs\n", float64(time.Until(time.Unix(nextSlot, 0)).Milliseconds())/1000)
+			nextEpoch := epochToTimestamp(genesisTime.Unix(), slot/slotsPerEpoch+1, secondsPerSlot, slotsPerEpoch)
+			fmt.Printf("Slots until next epoch: %d\n", (slot/slotsPerEpoch+1)*slotsPerEpoch-slot)
+			fmt.Printf("Time until next epoch: %2.1fs\n", float64(time.Until(time.Unix(nextEpoch, 0)).Milliseconds())/1000)
+		}
+
+		os.Exit(_exitSuccess)
+	},
+}
+
+func init() {
+	chainCmd.AddCommand(chainStatusCmd)
+	chainFlags(chainStatusCmd)
+	chainStatusCmd.Flags().BoolVar(&chainStatusSlot, "slot", false, "Print slot-based values")
+
+}

cmd/constants.go

@@ -14,6 +14,6 @@
 package cmd
 
 const (
-	_exit_success = 0
-	_exit_failure = 1
+	_exitSuccess = 0
+	_exitFailure = 1
 )

cmd/deposit.go

@@ -0,0 +1,32 @@
+// Copyright © 2019 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+)
+
+// depositCmd represents the deposit command
+var depositCmd = &cobra.Command{
+	Use:   "deposit",
+	Short: "Manage Ethereum 2 deposits",
+	Long:  `Manage Ethereum 2 deposits.`,
+}
+
+func init() {
+	RootCmd.AddCommand(depositCmd)
+}
+
+func depositFlags(cmd *cobra.Command) {
+}

cmd/depositverify.go

@@ -0,0 +1,235 @@
+// Copyright © 2019, 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"bytes"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"strings"
+
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+	e2types "github.com/wealdtech/go-eth2-types/v2"
+	util "github.com/wealdtech/go-eth2-util"
+	string2eth "github.com/wealdtech/go-string2eth"
+)
+
+type depositData struct {
+	Name                  string `json:"name,omitempty"`
+	Account               string `json:"account,omitempty"`
+	PublicKey             string `json:"pubkey"`
+	WithdrawalCredentials string `json:"withdrawal_credentials"`
+	Signature             string `json:"signature"`
+	DepositDataRoot       string `json:"deposit_data_root"`
+	Value                 uint64 `json:"value"`
+	Version               uint64 `json:"version"`
+}
+
+var depositVerifyData string
+var depositVerifyWithdrawalPubKey string
+var depositVerifyValidatorPubKey string
+var depositVerifyDepositValue string
+
+var depositVerifyCmd = &cobra.Command{
+	Use:   "verify",
+	Short: "Verify deposit data matches requirements",
+	Long: `Verify deposit data matches requirements.  For example:
+
+    ethdo deposit verify --data=depositdata.json --withdrawalaccount=primary/current --value="32 Ether"
+
+The information generated can be passed to ethereal to create a deposit from the Ethereum 1 chain.
+
+In quiet mode this will return 0 if the the data can be generated correctly, otherwise 1.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		assert(depositVerifyData != "", "--data is required")
+		deposits, err := depositDataFromJSON(depositVerifyData)
+		errCheck(err, "Failed to fetch deposit data")
+
+		withdrawalCredentials := ""
+		if depositVerifyWithdrawalPubKey != "" {
+			withdrawalPubKeyBytes, err := hex.DecodeString(strings.TrimPrefix(depositVerifyWithdrawalPubKey, "0x"))
+			errCheck(err, "Invalid withdrawal public key")
+			assert(len(withdrawalPubKeyBytes) == 48, "Public key should be 48 bytes")
+			withdrawalPubKey, err := e2types.BLSPublicKeyFromBytes(withdrawalPubKeyBytes)
+			errCheck(err, "Value supplied with --withdrawalpubkey is not a valid public key")
+			withdrawalBytes := util.SHA256(withdrawalPubKey.Marshal())
+			withdrawalBytes[0] = 0 // BLS_WITHDRAWAL_PREFIX
+			withdrawalCredentials = fmt.Sprintf("%x", withdrawalBytes)
+		}
+		outputIf(debug, fmt.Sprintf("Withdrawal credentials are %s", withdrawalCredentials))
+
+		depositValue := uint64(0)
+		if depositVerifyDepositValue != "" {
+			depositValue, err = string2eth.StringToGWei(depositVerifyDepositValue)
+			errCheck(err, "Invalid value")
+			// This is hard-coded, to allow deposit data to be generated without a connection to the beacon node.
+			assert(depositValue >= 1000000000, "deposit value must be at least 1 Ether") // MIN_DEPOSIT_AMOUNT
+		}
+
+		validatorPubKeys := make(map[string]bool)
+		if depositVerifyValidatorPubKey != "" {
+			validatorPubKeys, err = validatorPubKeysFromInput(depositVerifyValidatorPubKey)
+			errCheck(err, "Failed to obtain validator public key(s))")
+		}
+
+		failures := false
+		for i, deposit := range deposits {
+			if withdrawalCredentials != "" {
+				if deposit.WithdrawalCredentials != withdrawalCredentials {
+					outputIf(!quiet, fmt.Sprintf("Invalid withdrawal credentials for deposit %d", i))
+					failures = true
+				}
+			}
+			if depositValue != 0 {
+				if deposit.Value != depositValue {
+					outputIf(!quiet, fmt.Sprintf("Invalid deposit value for deposit %d", i))
+					failures = true
+				}
+			}
+			if len(validatorPubKeys) != 0 {
+				if _, exists := validatorPubKeys[deposit.PublicKey]; !exists {
+					outputIf(!quiet, fmt.Sprintf("Unknown validator public key for deposit %d", i))
+					failures = true
+				}
+			}
+			outputIf(!quiet, fmt.Sprintf("Deposit %q verified", deposit.Name))
+		}
+
+		if failures {
+			os.Exit(_exitFailure)
+		}
+		os.Exit(_exitSuccess)
+	},
+}
+
+func validatorPubKeysFromInput(input string) (map[string]bool, error) {
+	pubKeys := make(map[string]bool)
+	var err error
+	var data []byte
+	// Input could be a public key or a path to public keys.
+	if strings.HasPrefix(input, "0x") {
+		// Looks like a public key.
+		pubKeyBytes, err := hex.DecodeString(strings.TrimPrefix(input, "0x"))
+		if err != nil {
+			return nil, errors.Wrap(err, "public key is not a hex string")
+		}
+		if len(pubKeyBytes) != 48 {
+			return nil, errors.New("public key should be 48 bytes")
+		}
+		pubKey, err := e2types.BLSPublicKeyFromBytes(pubKeyBytes)
+		if err != nil {
+			return nil, errors.Wrap(err, "invalid public key")
+		}
+		pubKeys[fmt.Sprintf("%x", pubKey.Marshal())] = true
+	} else {
+		// Assume it's a path to a file of public keys.
+		data, err = ioutil.ReadFile(input)
+		if err != nil {
+			return nil, errors.Wrap(err, "failed to find public key file")
+		}
+		lines := bytes.Split(bytes.Replace(data, []byte("\r\n"), []byte("\n"), -1), []byte("\n"))
+		if len(lines) == 0 {
+			return nil, errors.New("file has no public keys")
+		}
+		for _, line := range lines {
+			if len(line) == 0 {
+				continue
+			}
+			pubKeyBytes, err := hex.DecodeString(strings.TrimPrefix(string(line), "0x"))
+			if err != nil {
+				return nil, errors.Wrap(err, "public key is not a hex string")
+			}
+			if len(pubKeyBytes) != 48 {
+				return nil, errors.New("public key should be 48 bytes")
+			}
+			pubKey, err := e2types.BLSPublicKeyFromBytes(pubKeyBytes)
+			if err != nil {
+				return nil, errors.Wrap(err, "invalid public key")
+			}
+			pubKeys[fmt.Sprintf("%x", pubKey.Marshal())] = true
+		}
+	}
+
+	return pubKeys, nil
+}
+
+func depositDataFromJSON(input string) ([]*depositData, error) {
+	var err error
+	var data []byte
+	// Input could be JSON or a path to JSON
+	switch {
+	case strings.HasPrefix(input, "{"):
+		// Looks like JSON
+		data = []byte("[" + input + "]")
+	case strings.HasPrefix(input, "["):
+		// Looks like JSON array
+		data = []byte(input)
+	default:
+		// Assume it's a path to JSON
+		data, err = ioutil.ReadFile(input)
+		if err != nil {
+			return nil, errors.Wrap(err, "failed to find deposit data file")
+		}
+		if data[0] == '{' {
+			data = []byte("[" + string(data) + "]")
+		}
+	}
+	var depositData []*depositData
+	err = json.Unmarshal(data, &depositData)
+	if err != nil {
+		return nil, errors.Wrap(err, "data is not valid JSON")
+	}
+	if len(depositData) == 0 {
+		return nil, errors.New("no deposits supplied")
+	}
+	minVersion := depositData[0].Version
+	maxVersion := depositData[0].Version
+	for i := range depositData {
+		if depositData[i].PublicKey == "" {
+			return nil, fmt.Errorf("no public key for deposit %d", i)
+		}
+		if depositData[i].DepositDataRoot == "" {
+			return nil, fmt.Errorf("no data root for deposit %d", i)
+		}
+		if depositData[i].Signature == "" {
+			return nil, fmt.Errorf("no signature for deposit %d", i)
+		}
+		if depositData[i].WithdrawalCredentials == "" {
+			return nil, fmt.Errorf("no withdrawal credentials for deposit %d", i)
+		}
+		if depositData[i].Value < 1000000000 {
+			return nil, fmt.Errorf("Deposit amount too small for deposit %d", i)
+		}
+		if depositData[i].Version > maxVersion {
+			maxVersion = depositData[i].Version
+		}
+		if depositData[i].Version < minVersion {
+			minVersion = depositData[i].Version
+		}
+	}
+	return depositData, nil
+}
+
+func init() {
+	depositCmd.AddCommand(depositVerifyCmd)
+	depositFlags(depositVerifyCmd)
+	depositVerifyCmd.Flags().StringVar(&depositVerifyData, "data", "", "JSON data, or path to JSON data")
+	depositVerifyCmd.Flags().StringVar(&depositVerifyWithdrawalPubKey, "withdrawalpubkey", "", "Public key of the account to which the validator funds will be withdrawn")
+	depositVerifyCmd.Flags().StringVar(&depositVerifyDepositValue, "depositvalue", "", "Value of the amount to be deposited")
+	depositVerifyCmd.Flags().StringVar(&depositVerifyValidatorPubKey, "validatorpubkey", "", "Public key(s) of the account(s) that will be carrying out validation")
+}

cmd/err.go

@@ -57,10 +57,10 @@ func assert(condition bool, msg string) {
 
 // die prints an error and quits
 func die(msg string) {
-	if !quiet {
+	if msg != "" && !quiet {
 		fmt.Fprintf(os.Stderr, "%s\n", msg)
 	}
-	os.Exit(1)
+	os.Exit(_exitFailure)
 }
 
 // warnCheck checks for an error and warns if it is present

cmd/networks.go

@@ -0,0 +1,47 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/wealdtech/ethdo/grpc"
+)
+
+// networks is a map of deposit contract addresses to networks.
+var networks = map[string]string{
+	"16e82d77882a663454ef92806b7deca1d394810f": "Altona",
+	"0f0f0fc0530007361933eab5db97d09acdd6c1c8": "Onyx",
+	"07b39f4fde4a38bace212b546dac87c58dfe3fdc": "Medalla",
+}
+
+// network returns the name of the network, if known.
+func network() string {
+	if err := connect(); err != nil {
+		return "Unknown"
+	}
+
+	depositContractAddress, err := grpc.FetchDepositContractAddress(eth2GRPCConn)
+	if err != nil {
+		return "Unknown"
+	}
+	outputIf(debug, fmt.Sprintf("Deposit contract is %x", depositContractAddress))
+
+	depositContract := fmt.Sprintf("%x", depositContractAddress)
+	if network, exists := networks[depositContract]; exists {
+		return network
+	} else {
+		return "Unknown"
+	}
+}

cmd/node.go

@@ -0,0 +1,32 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+)
+
+// nodeCmd represents the node command
+var nodeCmd = &cobra.Command{
+	Use:   "node",
+	Short: "Obtain information about an Ethereum 2 node",
+	Long:  "Obtain information about an Ethereum 2 node",
+}
+
+func init() {
+	RootCmd.AddCommand(nodeCmd)
+}
+
+func nodeFlags(cmd *cobra.Command) {
+}

cmd/nodeinfo.go

@@ -0,0 +1,74 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/spf13/cobra"
+	"github.com/wealdtech/ethdo/grpc"
+)
+
+var nodeInfoCmd = &cobra.Command{
+	Use:   "info",
+	Short: "Obtain information about a node",
+	Long: `Obtain information about a node.  For example:
+
+    ethdo node info
+
+In quiet mode this will return 0 if the node information can be obtained, otherwise 1.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		err := connect()
+		errCheck(err, "Failed to obtain connection to Ethereum 2 beacon chain node")
+		config, err := grpc.FetchChainConfig(eth2GRPCConn)
+		errCheck(err, "Failed to obtain beacon chain configuration")
+
+		genesisTime, err := grpc.FetchGenesisTime(eth2GRPCConn)
+		errCheck(err, "Failed to obtain genesis time")
+
+		if quiet {
+			os.Exit(_exitSuccess)
+		}
+
+		if verbose {
+			version, metadata, err := grpc.FetchVersion(eth2GRPCConn)
+			errCheck(err, "Failed to obtain version")
+			fmt.Printf("Version: %s\n", version)
+			if metadata != "" {
+				fmt.Printf("Metadata: %s\n", metadata)
+			}
+		}
+		syncing, err := grpc.FetchSyncing(eth2GRPCConn)
+		errCheck(err, "Failed to obtain syncing state")
+		fmt.Printf("Syncing: %v\n", syncing)
+
+		if genesisTime.Unix() == 0 {
+			fmt.Println("Not reached genesis")
+		} else {
+			slot := timestampToSlot(genesisTime.Unix(), time.Now().Unix(), config["SecondsPerSlot"].(uint64))
+			fmt.Printf("Current slot: %d\n", slot)
+			fmt.Printf("Current epoch: %d\n", slot/config["SlotsPerEpoch"].(uint64))
+			outputIf(verbose, fmt.Sprintf("Genesis timestamp: %v", genesisTime.Unix()))
+		}
+
+		os.Exit(_exitSuccess)
+	},
+}
+
+func init() {
+	nodeCmd.AddCommand(nodeInfoCmd)
+	nodeFlags(nodeInfoCmd)
+}

cmd/passphrases.go

@@ -0,0 +1,39 @@
+// Copyright © 2019 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import "github.com/spf13/viper"
+
+// getStorePassphrases() fetches the store passphrase supplied by the user.
+func getStorePassphrase() string {
+	return viper.GetString("store-passphrase")
+}
+
+// getWalletPassphrases() fetches the wallet passphrase supplied by the user.
+func getWalletPassphrase() string {
+	return viper.GetString("wallet-passphrase")
+}
+
+// getPassphrases() fetches the passphrases supplied by the user.
+func getPassphrases() []string {
+	return viper.GetStringSlice("passphrase")
+}
+
+// getPassphrase fetches the passphrase supplied by the user.
+func getPassphrase() string {
+	passphrases := getPassphrases()
+	assert(len(passphrases) != 0, "passphrase is required")
+	assert(len(passphrases) == 1, "multiple passphrases supplied; cannot continue")
+	return passphrases[0]
+}

cmd/root.go

@@ -14,18 +14,26 @@
 package cmd
 
 import (
-	"errors"
+	"context"
 	"fmt"
 	"os"
+	"regexp"
+	"sort"
+	"strconv"
 	"strings"
+	"time"
 
 	homedir "github.com/mitchellh/go-homedir"
+	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
-	types "github.com/wealdtech/go-eth2-types"
-
-	wallet "github.com/wealdtech/go-eth2-wallet"
-	wtypes "github.com/wealdtech/go-eth2-wallet-types"
+	e2types "github.com/wealdtech/go-eth2-types/v2"
+	e2wallet "github.com/wealdtech/go-eth2-wallet"
+	dirk "github.com/wealdtech/go-eth2-wallet-dirk"
+	filesystem "github.com/wealdtech/go-eth2-wallet-store-filesystem"
+	s3 "github.com/wealdtech/go-eth2-wallet-store-s3"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
+	"google.golang.org/grpc"
 )
 
 var cfgFile string
@@ -33,12 +41,17 @@ var quiet bool
 var verbose bool
 var debug bool
 
-// Root variables, present for all commands
+// Root variables, present for all commands.
 var rootStore string
-var rootAccount string
-var rootStorePassphrase string
-var rootWalletPassphrase string
-var rootAccountPassphrase string
+
+// Store for wallet actions.
+var store e2wtypes.Store
+
+// Remote connection.
+var remote bool
+
+// Prysm connection.
+var eth2GRPCConn *grpc.ClientConn
 
 // RootCmd represents the base command when called without any subcommands
 var RootCmd = &cobra.Command{
@@ -64,21 +77,39 @@ func persistentPreRun(cmd *cobra.Command, args []string) {
 	verbose = viper.GetBool("verbose")
 	debug = viper.GetBool("debug")
 	rootStore = viper.GetString("store")
-	rootAccount = viper.GetString("account")
-	rootStorePassphrase = viper.GetString("storepassphrase")
-	rootWalletPassphrase = viper.GetString("walletpassphrase")
-	rootAccountPassphrase = viper.GetString("passphrase")
 
 	if quiet && verbose {
-		die("Cannot supply both quiet and verbose flags")
+		fmt.Println("Cannot supply both quiet and verbose flags")
 	}
 	if quiet && debug {
-		die("Cannot supply both quiet and debug flags")
+		fmt.Println("Cannot supply both quiet and debug flags")
 	}
 
-	// Set up our wallet store
-	err := wallet.SetStore(rootStore, []byte(rootStorePassphrase))
-	errCheck(err, "Failed to set up wallet store")
+	if viper.GetString("remote") == "" {
+		// Set up our wallet store
+		switch rootStore {
+		case "s3":
+			assert(viper.GetString("base-dir") == "", "--basedir does not apply for the s3 store")
+			var err error
+			store, err = s3.New(s3.WithPassphrase([]byte(getStorePassphrase())))
+			errCheck(err, "Failed to access Amazon S3 wallet store")
+		case "filesystem":
+			opts := make([]filesystem.Option, 0)
+			if getStorePassphrase() != "" {
+				opts = append(opts, filesystem.WithPassphrase([]byte(getStorePassphrase())))
+			}
+			if viper.GetString("base-dir") != "" {
+				opts = append(opts, filesystem.WithLocation(viper.GetString("base-dir")))
+			}
+			store = filesystem.New(opts...)
+		default:
+			die(fmt.Sprintf("Unsupported wallet store %s", rootStore))
+		}
+		err := e2wallet.UseStore(store)
+		errCheck(err, "Failed to use defined wallet store")
+	} else {
+		remote = true
+	}
 }
 
 // Execute adds all child commands to the root command and sets flags appropriately.
@@ -86,11 +117,17 @@ func persistentPreRun(cmd *cobra.Command, args []string) {
 func Execute() {
 	if err := RootCmd.Execute(); err != nil {
 		fmt.Println(err)
-		os.Exit(_exit_failure)
+		os.Exit(_exitFailure)
 	}
 }
 
 func init() {
+	// Initialise our BLS library.
+	if err := e2types.InitBLS(); err != nil {
+		fmt.Println(err)
+		os.Exit(_exitFailure)
+	}
+
 	cobra.OnInitialize(initConfig)
 
 	RootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.ethdo.yaml)")
@@ -106,15 +143,19 @@ func init() {
 	if err := viper.BindPFlag("account", RootCmd.PersistentFlags().Lookup("account")); err != nil {
 		panic(err)
 	}
+	RootCmd.PersistentFlags().String("basedir", "", "Base directory for filesystem wallets")
+	if err := viper.BindPFlag("base-dir", RootCmd.PersistentFlags().Lookup("basedir")); err != nil {
+		panic(err)
+	}
 	RootCmd.PersistentFlags().String("storepassphrase", "", "Passphrase for store (if applicable)")
-	if err := viper.BindPFlag("storepassphrase", RootCmd.PersistentFlags().Lookup("storepassphrase")); err != nil {
+	if err := viper.BindPFlag("store-passphrase", RootCmd.PersistentFlags().Lookup("storepassphrase")); err != nil {
 		panic(err)
 	}
 	RootCmd.PersistentFlags().String("walletpassphrase", "", "Passphrase for wallet (if applicable)")
-	if err := viper.BindPFlag("walletpassphrase", RootCmd.PersistentFlags().Lookup("walletpassphrase")); err != nil {
+	if err := viper.BindPFlag("wallet-passphrase", RootCmd.PersistentFlags().Lookup("walletpassphrase")); err != nil {
 		panic(err)
 	}
-	RootCmd.PersistentFlags().String("passphrase", "", "Passphrase for account (if applicable)")
+	RootCmd.PersistentFlags().StringSlice("passphrase", nil, "Passphrase for account (if applicable)")
 	if err := viper.BindPFlag("passphrase", RootCmd.PersistentFlags().Lookup("passphrase")); err != nil {
 		panic(err)
 	}
@@ -130,6 +171,30 @@ func init() {
 	if err := viper.BindPFlag("debug", RootCmd.PersistentFlags().Lookup("debug")); err != nil {
 		panic(err)
 	}
+	RootCmd.PersistentFlags().String("connection", "localhost:4000", "connection to Ethereum 2 node via GRPC")
+	if err := viper.BindPFlag("connection", RootCmd.PersistentFlags().Lookup("connection")); err != nil {
+		panic(err)
+	}
+	RootCmd.PersistentFlags().Duration("timeout", 10*time.Second, "the time after which a network request will be considered failed.  Increase this if you are running on an error-prone, high-latency or low-bandwidth connection")
+	if err := viper.BindPFlag("timeout", RootCmd.PersistentFlags().Lookup("timeout")); err != nil {
+		panic(err)
+	}
+	RootCmd.PersistentFlags().String("remote", "", "connection to a remote wallet daemon")
+	if err := viper.BindPFlag("remote", RootCmd.PersistentFlags().Lookup("remote")); err != nil {
+		panic(err)
+	}
+	RootCmd.PersistentFlags().String("client-cert", "", "location of a client certificate file when connecting to the remote wallet daemon")
+	if err := viper.BindPFlag("client-cert", RootCmd.PersistentFlags().Lookup("client-cert")); err != nil {
+		panic(err)
+	}
+	RootCmd.PersistentFlags().String("client-key", "", "location of a client key file when connecting to the remote wallet daemon")
+	if err := viper.BindPFlag("client-key", RootCmd.PersistentFlags().Lookup("client-key")); err != nil {
+		panic(err)
+	}
+	RootCmd.PersistentFlags().String("server-ca-cert", "", "location of the server certificate authority certificate when connecting to the remote wallet daemon")
+	if err := viper.BindPFlag("server-ca-cert", RootCmd.PersistentFlags().Lookup("server-ca-cert")); err != nil {
+		panic(err)
+	}
 }
 
 // initConfig reads in config file and ENV variables if set.
@@ -140,10 +205,7 @@ func initConfig() {
 	} else {
 		// Find home directory.
 		home, err := homedir.Dir()
-		if err != nil {
-			fmt.Println(err)
-			os.Exit(_exit_failure)
-		}
+		errCheck(err, "could not find home directory")
 
 		// Search config in home directory with name ".ethdo" (without extension).
 		viper.AddConfigPath(home)
@@ -151,15 +213,13 @@ func initConfig() {
 	}
 
 	viper.SetEnvPrefix("ETHDO")
+	viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_"))
 	viper.AutomaticEnv() // read in environment variables that match
 
 	// If a config file is found, read it in.
 	if err := viper.ReadInConfig(); err != nil {
 		// Don't report lack of config file...
-		if !strings.Contains(err.Error(), "Not Found") {
-			fmt.Println(err)
-			os.Exit(_exit_failure)
-		}
+		assert(strings.Contains(err.Error(), "Not Found"), "failed to read configuration")
 	}
 }
 
@@ -173,46 +233,29 @@ func outputIf(condition bool, msg string) {
 	}
 }
 
-// walletAndAccountNamesFromPath breaks a path in to wallet and account names.
-func walletAndAccountNamesFromPath(path string) (string, string, error) {
-	if len(path) == 0 {
-		return "", "", errors.New("invalid account format")
-	}
-	index := strings.Index(path, "/")
-	if index == -1 {
-		// Just the wallet
-		return path, "", nil
-	}
-	if index == len(path)-1 {
-		// Trailing /
-		return path[:index], "", nil
-	}
-	return path[:index], path[index+1:], nil
-}
-
 // walletFromPath obtains a wallet given a path specification.
-func walletFromPath(path string) (wtypes.Wallet, error) {
-	walletName, _, err := walletAndAccountNamesFromPath(path)
+func walletFromPath(path string) (e2wtypes.Wallet, error) {
+	walletName, _, err := e2wallet.WalletAndAccountNames(path)
 	if err != nil {
 		return nil, err
 	}
-	w, err := wallet.OpenWallet(walletName)
+	wallet, err := e2wallet.OpenWallet(walletName)
 	if err != nil {
 		if strings.Contains(err.Error(), "failed to decrypt wallet") {
 			return nil, errors.New("Incorrect store passphrase")
 		}
 		return nil, err
 	}
-	return w, nil
+	return wallet, nil
 }
 
 // accountFromPath obtains an account given a path specification.
-func accountFromPath(path string) (wtypes.Account, error) {
+func accountFromPath(ctx context.Context, path string) (e2wtypes.Account, error) {
 	wallet, err := walletFromPath(path)
 	if err != nil {
 		return nil, err
 	}
-	_, accountName, err := walletAndAccountNamesFromPath(path)
+	_, accountName, err := e2wallet.WalletAndAccountNames(path)
 	if err != nil {
 		return nil, err
 	}
@@ -220,27 +263,153 @@ func accountFromPath(path string) (wtypes.Account, error) {
 		return nil, errors.New("no account name")
 	}
 
-	if wallet.Type() == "hierarchical deterministic" && strings.HasPrefix(accountName, "m/") && rootWalletPassphrase != "" {
-		err = wallet.Unlock([]byte(rootWalletPassphrase))
-		if err != nil {
-			return nil, errors.New("invalid wallet passphrase")
+	if wallet.Type() == "hierarchical deterministic" && strings.HasPrefix(accountName, "m/") {
+		assert(getWalletPassphrase() != "", "--walletpassphrase is required for direct path derivations")
+
+		locker, isLocker := wallet.(e2wtypes.WalletLocker)
+		if isLocker {
+			err = locker.Unlock(ctx, []byte(viper.GetString("wallet-passphrase")))
+			if err != nil {
+				return nil, errors.New("invalid wallet passphrase")
+			}
+			defer relockAccount(locker)
 		}
-		defer wallet.Lock()
 	}
-	return wallet.AccountByName(accountName)
+
+	accountByNameProvider, isAccountByNameProvider := wallet.(e2wtypes.WalletAccountByNameProvider)
+	if !isAccountByNameProvider {
+		return nil, errors.New("wallet cannot obtain accounts by name")
+	}
+	return accountByNameProvider.AccountByName(ctx, accountName)
 }
 
-func sign(path string, data []byte, domain uint64) (types.Signature, error) {
-	assert(rootAccountPassphrase != "", "--passphrase is required")
+// accountsFromPath obtains 0 or more accounts given a path specification.
+func accountsFromPath(ctx context.Context, wallet e2wtypes.Wallet, accountSpec string) ([]e2wtypes.Account, error) {
+	accounts := make([]e2wtypes.Account, 0)
 
-	account, err := accountFromPath(path)
-	if err != nil {
-		return nil, err
+	if accountSpec == "" {
+		accountSpec = "^.*$"
+	} else {
+		accountSpec = fmt.Sprintf("^%s$", accountSpec)
 	}
-	err = account.Unlock([]byte(rootAccountPassphrase))
-	if err != nil {
-		return nil, err
+	re := regexp.MustCompile(accountSpec)
+
+	for account := range wallet.Accounts(ctx) {
+		if re.Match([]byte(account.Name())) {
+			accounts = append(accounts, account)
+		}
 	}
-	defer account.Lock()
-	return account.Sign(data, domain)
+
+	// Tidy up accounts by name.
+	sort.Slice(accounts, func(i, j int) bool {
+		return accounts[i].Name() < accounts[j].Name()
+	})
+
+	return accounts, nil
+}
+
+// connect connects to an Ethereum 2 endpoint.
+func connect() error {
+	if eth2GRPCConn != nil {
+		// Already connected.
+		return nil
+	}
+
+	connection := ""
+	if viper.GetString("connection") != "" {
+		connection = viper.GetString("connection")
+	}
+
+	if connection == "" {
+		return errors.New("no connection")
+	}
+	outputIf(debug, fmt.Sprintf("Connecting to %s", connection))
+
+	opts := []grpc.DialOption{grpc.WithInsecure()}
+
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+	var err error
+	eth2GRPCConn, err = grpc.DialContext(ctx, connection, opts...)
+	return err
+}
+
+// bestPublicKey returns the best public key for operations.
+// It prefers the composite public key if present, otherwise the public key.
+func bestPublicKey(account e2wtypes.Account) (e2types.PublicKey, error) {
+	var pubKey e2types.PublicKey
+	publicKeyProvider, isCompositePublicKeyProvider := account.(e2wtypes.AccountCompositePublicKeyProvider)
+	if isCompositePublicKeyProvider {
+		pubKey = publicKeyProvider.CompositePublicKey()
+	} else {
+		publicKeyProvider, isPublicKeyProvider := account.(e2wtypes.AccountPublicKeyProvider)
+		if isPublicKeyProvider {
+			pubKey = publicKeyProvider.PublicKey()
+		} else {
+			return nil, errors.New("account does not provide a public key")
+		}
+	}
+	return pubKey, nil
+}
+
+// remotesToEndpoints generates endpoints from remote addresses.
+func remotesToEndpoints(remotes []string) ([]*dirk.Endpoint, error) {
+	endpoints := make([]*dirk.Endpoint, 0)
+	for _, remote := range remotes {
+		parts := strings.Split(remote, ":")
+		if len(parts) != 2 {
+			return nil, fmt.Errorf("invalid remote %q", remote)
+		}
+		port, err := strconv.ParseUint(parts[1], 10, 32)
+		if err != nil {
+			return nil, errors.Wrap(err, fmt.Sprintf("invalid port in remote %q", remote))
+		}
+		endpoints = append(endpoints, dirk.NewEndpoint(parts[0], uint32(port)))
+	}
+	return endpoints, nil
+}
+
+// Oepn a wallet, local or remote.
+func openWallet() (e2wtypes.Wallet, error) {
+	var err error
+	// Obtain the name of the wallet.
+	walletName := viper.GetString("wallet")
+	if walletName == "" {
+		walletName, _, err = e2wallet.WalletAndAccountNames(viper.GetString("account"))
+	}
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to obtain wallet name")
+	}
+	if walletName == "" {
+		return nil, errors.New("no wallet name provided")
+	}
+
+	return openNamedWallet(walletName)
+}
+
+// Open a named wallet, local or remote.
+func openNamedWallet(walletName string) (e2wtypes.Wallet, error) {
+	if viper.GetString("remote") != "" {
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
+		assert(viper.GetString("client-cert") != "", "remote connections require client-cert")
+		assert(viper.GetString("client-key") != "", "remote connections require client-key")
+		credentials, err := dirk.ComposeCredentials(ctx, viper.GetString("client-cert"), viper.GetString("client-key"), viper.GetString("server-ca-cert"))
+		if err != nil {
+			return nil, errors.Wrap(err, "failed to build dirk credentials")
+		}
+
+		endpoints, err := remotesToEndpoints([]string{viper.GetString("remote")})
+		if err != nil {
+			return nil, errors.Wrap(err, "failed to parse remote servers")
+		}
+
+		return dirk.OpenWallet(ctx, walletName, credentials, endpoints)
+	}
+	return walletFromPath(walletName)
+}
+
+// relockAccount locks an account; generally called as a defer after an account is unlocked.
+func relockAccount(locker e2wtypes.AccountLocker) {
+	errCheck(locker.Lock(context.Background()), "failed to re-lock account")
 }

cmd/signature.go

@@ -15,11 +15,10 @@ package cmd
 
 import (
 	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+	"github.com/spf13/viper"
 )
 
-var signatureData string
-var signatureDomain string
-
 // signatureCmd represents the signature command
 var signatureCmd = &cobra.Command{
 	Use:     "signature",
@@ -32,7 +31,23 @@ func init() {
 	RootCmd.AddCommand(signatureCmd)
 }
 
+var dataFlag *pflag.Flag
+var domainFlag *pflag.Flag
+
 func signatureFlags(cmd *cobra.Command) {
-	cmd.Flags().StringVar(&signatureData, "data", "", "the hex string of data")
-	cmd.Flags().StringVar(&signatureDomain, "domain", "", "the hex string of the BLS domain (defaults to 0x0000000000000000)")
+	if dataFlag == nil {
+		cmd.Flags().String("data", "", "the data, as a hex string")
+		dataFlag = cmd.Flags().Lookup("data")
+		if err := viper.BindPFlag("signature-data", dataFlag); err != nil {
+			panic(err)
+		}
+		cmd.Flags().String("domain", "0x0000000000000000000000000000000000000000000000000000000000000000", "the BLS domain, as a hex string")
+		domainFlag = cmd.Flags().Lookup("domain")
+		if err := viper.BindPFlag("signature-domain", domainFlag); err != nil {
+			panic(err)
+		}
+	} else {
+		cmd.Flags().AddFlag(dataFlag)
+		cmd.Flags().AddFlag(domainFlag)
+	}
 }

cmd/signatureaggregate.go

@@ -0,0 +1,110 @@
+// Copyright © 2017-2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"encoding/hex"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+
+	"github.com/herumi/bls-eth-go-binary/bls"
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+	"github.com/wealdtech/ethdo/util"
+)
+
+var signatureAggregateSignatures []string
+
+// signatureAggregateCmd represents the signature aggregate command
+var signatureAggregateCmd = &cobra.Command{
+	Use:   "aggregate",
+	Short: "Aggregate signatures",
+	Long: `Aggregate signatures, either threshold or absolute.  For example:
+
+    ethdo signature aggregate --signatures=0x5f24e819400c6a8ee2bfc014343cd971b7eb707320025a7bcd83e621e26c35b7,
+
+Signatures are specified as "signature" for simple aggregation, and as "id:signature" for threshold aggregation.
+
+In quiet mode this will return 0 if the signatures can be aggregated, otherwise 1.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		assert(len(signatureAggregateSignatures) > 1, "multiple signatures required to aggregate")
+		var signature *bls.Sign
+		var err error
+		if strings.Contains(signatureAggregateSignatures[0], ":") {
+			signature, err = generateThresholdSignature()
+		} else {
+			signature, err = generateAggregateSignature()
+		}
+		errCheck(err, "Failed to aggregate signature")
+
+		outputIf(!quiet, fmt.Sprintf("%#x", signature.Serialize()))
+		os.Exit(_exitSuccess)
+	},
+}
+
+func generateThresholdSignature() (*bls.Sign, error) {
+	ids := make([]bls.ID, len(signatureAggregateSignatures))
+	sigs := make([]bls.Sign, len(signatureAggregateSignatures))
+
+	for i := range signatureAggregateSignatures {
+		parts := strings.Split(signatureAggregateSignatures[i], ":")
+		if len(parts) != 2 {
+			return nil, errors.New("invalid threshold signature format")
+		}
+		id, err := strconv.ParseUint(parts[0], 10, 64)
+		if err != nil {
+			return nil, errors.Wrap(err, "invalid threshold signature ID")
+		}
+		ids[i] = *util.BLSID(id)
+		sigBytes, err := hex.DecodeString(strings.TrimPrefix(parts[1], "0x"))
+		if err != nil {
+			return nil, errors.Wrap(err, "invalid threshold signature ID")
+		}
+		if err := sigs[i].Deserialize(sigBytes); err != nil {
+			return nil, errors.Wrap(err, "invalid signature")
+		}
+	}
+
+	var compositeSig bls.Sign
+	if err := compositeSig.Recover(sigs, ids); err != nil {
+		return nil, err
+	}
+
+	return &compositeSig, nil
+}
+
+func generateAggregateSignature() (*bls.Sign, error) {
+	sigs := make([]bls.Sign, len(signatureAggregateSignatures))
+	for i := range signatureAggregateSignatures {
+		sigBytes, err := hex.DecodeString(strings.TrimPrefix(signatureAggregateSignatures[i], "0x"))
+		if err != nil {
+			return nil, errors.Wrap(err, "failed to decode signature")
+		}
+		if err := sigs[i].Deserialize(sigBytes); err != nil {
+			return nil, errors.Wrap(err, "invalid signature")
+		}
+	}
+	var aggregateSig bls.Sign
+	aggregateSig.Aggregate(sigs)
+
+	return &aggregateSig, nil
+}
+
+func init() {
+	signatureCmd.AddCommand(signatureAggregateCmd)
+	signatureAggregateCmd.Flags().StringArrayVar(&signatureAggregateSignatures, "signature", nil, "a signature to aggregate (supply once for each signature)")
+	signatureFlags(signatureAggregateCmd)
+}

cmd/signaturesign.go

@@ -1,4 +1,4 @@
-// Copyright © 2017-2019 Weald Technology Trading
+// Copyright © 2017-2020 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -14,48 +14,65 @@
 package cmd
 
 import (
+	"context"
 	"fmt"
 	"os"
 
 	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
 	"github.com/wealdtech/go-bytesutil"
-	types "github.com/wealdtech/go-eth2-types"
+	e2types "github.com/wealdtech/go-eth2-types/v2"
+	e2wallet "github.com/wealdtech/go-eth2-wallet"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
 )
 
 // signatureSignCmd represents the signature sign command
 var signatureSignCmd = &cobra.Command{
 	Use:   "sign",
-	Short: "Sign data",
+	Short: "Sign a 32-byte piece of data",
 	Long: `Sign presented data.  For example:
 
-    ethereal signature sign --data="0x5FfC014343cd971B7eb70732021E26C35B744cc4" --account="Personal wallet/Operations" --passphrase="my account passphrase"
+    ethdo signature sign --data=0x5f24e819400c6a8ee2bfc014343cd971b7eb707320025a7bcd83e621e26c35b7 --account="Personal wallet/Operations" --passphrase="my account passphrase"
 
 In quiet mode this will return 0 if the data can be signed, otherwise 1.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		assert(signatureData != "", "--data is required")
-		data, err := bytesutil.FromHexString(signatureData)
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
+
+		assert(viper.GetString("signature-data") != "", "--data is required")
+		data, err := bytesutil.FromHexString(viper.GetString("signature-data"))
 		errCheck(err, "Failed to parse data")
+		assert(len(data) == 32, "data to sign must be 32 bytes")
 
-		domain := types.Domain([]byte{0, 0, 0, 0}, []byte{0, 0, 0, 0})
-		if signatureDomain != "" {
-			domainBytes, err := bytesutil.FromHexString(signatureDomain)
+		domain := e2types.Domain(e2types.DomainType([4]byte{0, 0, 0, 0}), e2types.ZeroForkVersion, e2types.ZeroGenesisValidatorsRoot)
+		if viper.GetString("signature-domain") != "" {
+			domain, err = bytesutil.FromHexString(viper.GetString("signature-domain"))
 			errCheck(err, "Failed to parse domain")
-			assert(len(domainBytes) == 8, "Domain data invalid")
+			assert(len(domain) == 32, "Domain data invalid")
 		}
+		outputIf(debug, fmt.Sprintf("Domain is %#x", domain))
 
-		assert(rootAccount != "", "--account is required")
-		account, err := accountFromPath(rootAccount)
-		errCheck(err, "Failed to access account for signing")
+		assert(viper.GetString("account") != "", "--account is required")
 
-		err = account.Unlock([]byte(rootAccountPassphrase))
-		errCheck(err, "Failed to unlock account for signing")
-		defer account.Lock()
+		wallet, err := openWallet()
+		errCheck(err, "Failed to access wallet")
 
-		signature, err := account.Sign(data, domain)
-		errCheck(err, "Failed to sign data")
+		_, accountName, err := e2wallet.WalletAndAccountNames(viper.GetString("account"))
+		errCheck(err, "Failed to obtain account name")
 
-		outputIf(!quiet, fmt.Sprintf("0x%096x", signature.Marshal()))
-		os.Exit(_exit_success)
+		accountByNameProvider, isAccountByNameProvider := wallet.(e2wtypes.WalletAccountByNameProvider)
+		assert(isAccountByNameProvider, "wallet does not support obtaining accounts by name")
+
+		account, err := accountByNameProvider.AccountByName(ctx, accountName)
+		errCheck(err, "Failed to obtain account")
+
+		var fixedSizeData [32]byte
+		copy(fixedSizeData[:], data)
+		signature, err := signRoot(account, fixedSizeData, domain)
+		errCheck(err, "Failed to sign")
+
+		outputIf(!quiet, fmt.Sprintf("%#x", signature.Marshal()))
+		os.Exit(_exitSuccess)
 	},
 }
 

cmd/signatureverify.go

@@ -1,4 +1,4 @@
-// Copyright © 2017-2019 Weald Technology Trading
+// Copyright © 2017-2020 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -14,15 +14,21 @@
 package cmd
 
 import (
+	"context"
+	"fmt"
 	"os"
 
+	"github.com/prysmaticlabs/go-ssz"
 	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
 	"github.com/wealdtech/go-bytesutil"
-	types "github.com/wealdtech/go-eth2-types"
+	e2types "github.com/wealdtech/go-eth2-types/v2"
+	e2wallet "github.com/wealdtech/go-eth2-wallet"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
 )
 
 var signatureVerifySignature string
-var signatureVerifyPubKey string
+var signatureVerifySigner string
 
 // signatureVerifyCmd represents the signature verify command
 var signatureVerifyCmd = &cobra.Command{
@@ -30,46 +36,68 @@ var signatureVerifyCmd = &cobra.Command{
 	Short: "Verify signed data",
 	Long: `Verify signed data.  For example:
 
-    ethereal signature verify --data="0x5FfC014343cd971B7eb70732021E26C35B744cc4" --signature="0x8888..." --account="Personal wallet/Operations"
+    ethdo signature verify --data=0x5f24e819400c6a8ee2bfc014343cd971b7eb707320025a7bcd83e621e26c35b7 --signature=0x8888... --account="Personal wallet/Operations"
 
 In quiet mode this will return 0 if the data can be signed, otherwise 1.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		assert(signatureData != "", "--data is required")
-		data, err := bytesutil.FromHexString(signatureData)
+		assert(viper.GetString("signature-data") != "", "--data is required")
+		data, err := bytesutil.FromHexString(viper.GetString("signature-data"))
 		errCheck(err, "Failed to parse data")
+		assert(len(data) == 32, "data to verify must be 32 bytes")
 
 		assert(signatureVerifySignature != "", "--signature is required")
 		signatureBytes, err := bytesutil.FromHexString(signatureVerifySignature)
 		errCheck(err, "Failed to parse signature")
-		signature, err := types.BLSSignatureFromBytes(signatureBytes)
+		signature, err := e2types.BLSSignatureFromBytes(signatureBytes)
 		errCheck(err, "Invalid signature")
 
-		domain := types.Domain([]byte{0, 0, 0, 0}, []byte{0, 0, 0, 0})
-		if signatureDomain != "" {
-			domainBytes, err := bytesutil.FromHexString(signatureDomain)
+		domain := e2types.Domain(e2types.DomainType([4]byte{0, 0, 0, 0}), e2types.ZeroForkVersion, e2types.ZeroGenesisValidatorsRoot)
+		if viper.GetString("signature-domain") != "" {
+			domain, err = bytesutil.FromHexString(viper.GetString("signature-domain"))
 			errCheck(err, "Failed to parse domain")
-			assert(len(domainBytes) == 8, "Domain data invalid")
+			assert(len(domain) == 32, "Domain data invalid")
 		}
 
-		var pubKey types.PublicKey
-		assert(signatureVerifyPubKey == "" || rootAccount == "", "Either --pubkey or --account should be supplied")
-		if rootAccount != "" {
-			account, err := accountFromPath(rootAccount)
-			errCheck(err, "Unknown account")
-			pubKey = account.PublicKey()
+		var pubKey e2types.PublicKey
+		assert(signatureVerifySigner != "" || viper.GetString("account") != "", "Either --signer or --account should be supplied")
+		if viper.GetString("account") != "" {
+			wallet, err := openWallet()
+			errCheck(err, "Failed to access wallet")
+			_, accountName, err := e2wallet.WalletAndAccountNames(viper.GetString("account"))
+			errCheck(err, "Failed to obtain account name")
+
+			accountByNameProvider, isAccountByNameProvider := wallet.(e2wtypes.WalletAccountByNameProvider)
+			assert(isAccountByNameProvider, "wallet cannot obtain accounts by name")
+			ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+			defer cancel()
+			account, err := accountByNameProvider.AccountByName(ctx, accountName)
+			errCheck(err, "Failed to obtain account")
+			pubKey, err = bestPublicKey(account)
+			errCheck(err, "Failed to obtain account's public key")
 		} else {
-			pubKeyBytes, err := bytesutil.FromHexString(signatureVerifyPubKey)
+			pubKeyBytes, err := bytesutil.FromHexString(signatureVerifySigner)
 			errCheck(err, "Invalid public key")
-			pubKey, err = types.BLSPublicKeyFromBytes(pubKeyBytes)
+			pubKey, err = e2types.BLSPublicKeyFromBytes(pubKeyBytes)
 			errCheck(err, "Invalid public key")
 		}
-		verified := signature.Verify(data, pubKey, domain)
+		outputIf(debug, fmt.Sprintf("Public key is %#x", pubKey.Marshal()))
+		container := &signingContainer{
+			Root:   data,
+			Domain: domain,
+		}
+		outputIf(debug, fmt.Sprintf("Data root is %#x", data))
+		outputIf(debug, fmt.Sprintf("Domain is %#x", domain))
+		root, err := ssz.HashTreeRoot(container)
+		errCheck(err, "Failed to create signing root")
+		outputIf(debug, fmt.Sprintf("Signing root is %#x", root))
+
+		verified := signature.Verify(root[:], pubKey)
 		if !verified {
 			outputIf(!quiet, "Not verified")
-			os.Exit(_exit_failure)
+			os.Exit(_exitFailure)
 		}
 		outputIf(!quiet, "Verified")
-		os.Exit(_exit_success)
+		os.Exit(_exitSuccess)
 	},
 }
 
@@ -77,5 +105,5 @@ func init() {
 	signatureCmd.AddCommand(signatureVerifyCmd)
 	signatureFlags(signatureVerifyCmd)
 	signatureVerifyCmd.Flags().StringVar(&signatureVerifySignature, "signature", "", "the signature to verify")
-	signatureVerifyCmd.Flags().StringVar(&signatureVerifyPubKey, "signer", "", "the public key of the signer (only if --account is not supplied)")
+	signatureVerifyCmd.Flags().StringVar(&signatureVerifySigner, "signer", "", "the public key of the signer (only if --account is not supplied)")
 }

cmd/signing.go

@@ -0,0 +1,160 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/go-ssz"
+	"github.com/spf13/viper"
+	e2types "github.com/wealdtech/go-eth2-types/v2"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
+	wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
+)
+
+// signStruct signs an arbitrary structure.
+func signStruct(account wtypes.Account, data interface{}, domain []byte) (e2types.Signature, error) {
+	objRoot, err := ssz.HashTreeRoot(data)
+	outputIf(debug, fmt.Sprintf("Object root is %#x", objRoot))
+	if err != nil {
+		return nil, err
+	}
+
+	return signRoot(account, objRoot, domain)
+}
+
+// SigningContainer is the container for signing roots with a domain.
+// Contains SSZ sizes to allow for correct calculation of root.
+type signingContainer struct {
+	Root   []byte `ssz-size:"32"`
+	Domain []byte `ssz-size:"32"`
+}
+
+// signRoot signs a root.
+func signRoot(account wtypes.Account, root [32]byte, domain []byte) (e2types.Signature, error) {
+	if _, isProtectingSigner := account.(e2wtypes.AccountProtectingSigner); isProtectingSigner {
+		// Signer signs the data to sign itself.
+		return signGeneric(account, root[:], domain)
+	}
+
+	// Build the signing data manually.
+	container := &signingContainer{
+		Root:   root[:],
+		Domain: domain,
+	}
+	outputIf(debug, fmt.Sprintf("Signing container:\n root: %#x\n domain: %#x", container.Root, container.Domain))
+	signingRoot, err := ssz.HashTreeRoot(container)
+	if err != nil {
+		return nil, err
+	}
+	outputIf(debug, fmt.Sprintf("Signing root: %#x", signingRoot))
+	return sign(account, signingRoot[:])
+}
+
+func signGeneric(account wtypes.Account, data []byte, domain []byte) (e2types.Signature, error) {
+	alreadyUnlocked, err := unlock(account)
+	if err != nil {
+		return nil, err
+	}
+	outputIf(debug, fmt.Sprintf("Signing %x (%d)", data, len(data)))
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+
+	signer, isProtectingSigner := account.(e2wtypes.AccountProtectingSigner)
+	if !isProtectingSigner {
+		return nil, errors.New("account does not provide generic signing")
+	}
+
+	signature, err := signer.SignGeneric(ctx, data, domain)
+	errCheck(err, "failed to sign")
+	if !alreadyUnlocked {
+		if err := lock(account); err != nil {
+			return nil, errors.Wrap(err, "failed to lock account")
+		}
+	}
+	return signature, err
+}
+
+// sign signs arbitrary data, handling unlocking and locking as required.
+func sign(account wtypes.Account, data []byte) (e2types.Signature, error) {
+	alreadyUnlocked, err := unlock(account)
+	if err != nil {
+		return nil, err
+	}
+	outputIf(debug, fmt.Sprintf("Signing %x (%d)", data, len(data)))
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+
+	signer, isSigner := account.(e2wtypes.AccountSigner)
+	if !isSigner {
+		return nil, errors.New("account does not provide signing")
+	}
+
+	signature, err := signer.Sign(ctx, data)
+	errCheck(err, "failed to sign")
+	if !alreadyUnlocked {
+		if err := lock(account); err != nil {
+			return nil, errors.Wrap(err, "failed to lock account")
+		}
+	}
+	return signature, err
+}
+
+// unlock attempts to unlock an account.  It returns true if the account was already unlocked.
+func unlock(account e2wtypes.Account) (bool, error) {
+	locker, isAccountLocker := account.(e2wtypes.AccountLocker)
+	if !isAccountLocker {
+		outputIf(debug, "Account does not support unlocking")
+		// This account doesn't support unlocking; return okay.
+		return true, nil
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	alreadyUnlocked, err := locker.IsUnlocked(ctx)
+	cancel()
+	if err != nil {
+		return false, errors.Wrap(err, "unable to ascertain if account is unlocked")
+	}
+
+	if alreadyUnlocked {
+		return true, nil
+	}
+
+	// Not already unlocked; attempt to unlock it.
+	for _, passphrase := range getPassphrases() {
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		err = locker.Unlock(ctx, []byte(passphrase))
+		cancel()
+		if err == nil {
+			// Unlocked.
+			return false, nil
+		}
+	}
+
+	// Failed to unlock it.
+	return false, errors.New("failed to unlock account")
+}
+
+// lock attempts to lock an account.
+func lock(account e2wtypes.Account) error {
+	locker, isAccountLocker := account.(e2wtypes.AccountLocker)
+	if !isAccountLocker {
+		return nil
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+	return locker.Lock(ctx)
+}

cmd/validatordepositdata.go

@@ -1,4 +1,4 @@
-// Copyright © 2019 Weald Technology Trading
+// Copyright © 2019, 2020 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -14,89 +14,191 @@
 package cmd
 
 import (
+	"context"
+	"encoding/hex"
 	"fmt"
 	"os"
+	"strings"
 
 	"github.com/prysmaticlabs/go-ssz"
 	"github.com/spf13/cobra"
-	types "github.com/wealdtech/go-eth2-types"
+	"github.com/spf13/viper"
+	"github.com/wealdtech/ethdo/grpc"
+	e2types "github.com/wealdtech/go-eth2-types/v2"
 	util "github.com/wealdtech/go-eth2-util"
+	e2wallet "github.com/wealdtech/go-eth2-wallet"
 	string2eth "github.com/wealdtech/go-string2eth"
 )
 
 var validatorDepositDataValidatorAccount string
 var validatorDepositDataWithdrawalAccount string
+var validatorDepositDataWithdrawalPubKey string
 var validatorDepositDataDepositValue string
+var validatorDepositDataRaw bool
+var validatorDepositDataForkVersion string
 
 var validatorDepositDataCmd = &cobra.Command{
 	Use:   "depositdata",
-	Short: "Generate deposit data for a validator",
-	Long: `Generate data for a deposit to the Ethereum 1 validator contract.  For example:
+	Short: "Generate deposit data for one or more validators",
+	Long: `Generate data for deposits to the Ethereum 1 validator contract.  For example:
 
     ethdo validator depositdata --validatoraccount=primary/validator --withdrawalaccount=primary/current --value="32 Ether"
 
-In quiet mode this will return 0 if the the data can be generated correctly, otherwise 1.
+If validatoraccount is provided with an account path it will generate deposit data for all matching accounts.
 
 The information generated can be passed to ethereal to create a deposit from the Ethereum 1 chain.
 
 In quiet mode this will return 0 if the the data can be generated correctly, otherwise 1.`,
 	Run: func(cmd *cobra.Command, args []string) {
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
+
 		assert(validatorDepositDataValidatorAccount != "", "--validatoraccount is required")
-		validatorAccount, err := accountFromPath(validatorDepositDataValidatorAccount)
+		validatorWalletName, validatorAccountSpec, err := e2wallet.WalletAndAccountNames(validatorDepositDataValidatorAccount)
+		errCheck(err, "Failed to obtain wallet and account names")
+		validatorWallet, err := openNamedWallet(validatorWalletName)
+		errCheck(err, "Failed to obtain validator wallet")
+		validatorAccounts, err := accountsFromPath(ctx, validatorWallet, validatorAccountSpec)
 		errCheck(err, "Failed to obtain validator account")
-		outputIf(debug, fmt.Sprintf("Validator public key is %048x", validatorAccount.PublicKey().Marshal()))
+		assert(len(validatorAccounts) > 0, "Failed to obtain validator account")
 
-		assert(validatorDepositDataWithdrawalAccount != "", "--withdrawalaccount is required")
-		withdrawalAccount, err := accountFromPath(validatorDepositDataWithdrawalAccount)
-		errCheck(err, "Failed to obtain withdrawal account")
-		outputIf(debug, fmt.Sprintf("Withdrawal public key is %048x", withdrawalAccount.PublicKey().Marshal()))
+		for _, validatorAccount := range validatorAccounts {
+			outputIf(verbose, fmt.Sprintf("Creating deposit for %s/%s", validatorWallet.Name(), validatorAccount.Name()))
+			pubKey, err := bestPublicKey(validatorAccount)
+			errCheck(err, "Validator account does not provide a public key")
+			outputIf(debug, fmt.Sprintf("Validator public key is %#x", pubKey.Marshal()))
+		}
 
-		withdrawalCredentials := util.SHA256(withdrawalAccount.PublicKey().Marshal())
-		errCheck(err, "Failed to hash withdrawal credentials")
-		withdrawalCredentials[0] = byte(0) // BLSWithdrawalPrefix
-		outputIf(debug, fmt.Sprintf("Withdrawal credentials are %032x", withdrawalCredentials))
+		assert(validatorDepositDataWithdrawalAccount != "" || validatorDepositDataWithdrawalPubKey != "", "--withdrawalaccount or --withdrawalpubkey is required")
+		var withdrawalCredentials []byte
+		if validatorDepositDataWithdrawalAccount != "" {
+			withdrawalAccount, err := accountFromPath(ctx, validatorDepositDataWithdrawalAccount)
+			errCheck(err, "Failed to obtain withdrawal account")
+			pubKey, err := bestPublicKey(withdrawalAccount)
+			errCheck(err, "Withdrawal account does not provide a public key")
+			outputIf(debug, fmt.Sprintf("Withdrawal public key is %#x", pubKey.Marshal()))
+			withdrawalCredentials = util.SHA256(pubKey.Marshal())
+			errCheck(err, "Failed to hash withdrawal credentials")
+		} else {
+			withdrawalPubKeyBytes, err := hex.DecodeString(strings.TrimPrefix(validatorDepositDataWithdrawalPubKey, "0x"))
+			errCheck(err, "Invalid withdrawal public key")
+			assert(len(withdrawalPubKeyBytes) == 48, "Public key should be 48 bytes")
+			withdrawalPubKey, err := e2types.BLSPublicKeyFromBytes(withdrawalPubKeyBytes)
+			errCheck(err, "Value supplied with --withdrawalpubkey is not a valid public key")
+			withdrawalCredentials = util.SHA256(withdrawalPubKey.Marshal())
+			errCheck(err, "Failed to hash withdrawal credentials")
+		}
+		// This is hard-coded, to allow deposit data to be generated without a connection to the beacon node.
+		withdrawalCredentials[0] = byte(0) // BLS_WITHDRAWAL_PREFIX
+		outputIf(debug, fmt.Sprintf("Withdrawal credentials are %#x", withdrawalCredentials))
 
 		assert(validatorDepositDataDepositValue != "", "--depositvalue is required")
 		val, err := string2eth.StringToGWei(validatorDepositDataDepositValue)
 		errCheck(err, "Invalid value")
-		assert(val >= 1000000000, "deposit value must be at least 1 Ether")
+		// This is hard-coded, to allow deposit data to be generated without a connection to the beacon node.
+		assert(val >= 1000000000, "deposit value must be at least 1 Ether") // MIN_DEPOSIT_AMOUNT
 
-		depositData := struct {
-			PubKey                []byte `ssz-size:"48"`
-			WithdrawalCredentials []byte `ssz-size:"32"`
-			Value                 uint64
-		}{
-			PubKey:                validatorAccount.PublicKey().Marshal(),
-			WithdrawalCredentials: withdrawalCredentials,
-			Value:                 val,
-		}
-		signingRoot, err := ssz.HashTreeRoot(depositData)
-		errCheck(err, "Failed to generate deposit data signing root")
-		outputIf(debug, fmt.Sprintf("Signing root is %x", signingRoot))
-		domain := types.Domain(types.DomainDeposit, []byte{0, 0, 0, 0})
-		signature, err := sign(validatorDepositDataValidatorAccount, signingRoot[:], domain)
-		errCheck(err, "Failed to sign deposit data signing root")
+		// For each key, generate deposit data
+		outputs := make([]string, 0)
+		for _, validatorAccount := range validatorAccounts {
+			validatorPubKey, err := bestPublicKey(validatorAccount)
+			errCheck(err, "Validator account does not provide a public key")
+			depositData := struct {
+				PubKey                []byte `ssz-size:"48"`
+				WithdrawalCredentials []byte `ssz-size:"32"`
+				Value                 uint64
+			}{
+				PubKey:                validatorPubKey.Marshal(),
+				WithdrawalCredentials: withdrawalCredentials,
+				Value:                 val,
+			}
+			outputIf(debug, fmt.Sprintf("Deposit data:\n\tPublic key: %x\n\tWithdrawal credentials: %x\n\tValue: %d", depositData.PubKey, depositData.WithdrawalCredentials, depositData.Value))
 
-		signedDepositData := struct {
-			PubKey                []byte `ssz-size:"48"`
-			WithdrawalCredentials []byte `ssz-size:"32"`
-			Value                 uint64
-			Signature             []byte `ssz-size:"96"`
-		}{
-			PubKey:                validatorAccount.PublicKey().Marshal(),
-			WithdrawalCredentials: withdrawalCredentials,
-			Value:                 val,
-			Signature:             signature.Marshal(),
+			var forkVersion []byte
+			if validatorDepositDataForkVersion != "" {
+				forkVersion, err = hex.DecodeString(strings.TrimPrefix(validatorDepositDataForkVersion, "0x"))
+				errCheck(err, fmt.Sprintf("Failed to decode fork version %s", validatorDepositDataForkVersion))
+				assert(len(forkVersion) == 4, "Fork version must be exactly four bytes")
+			} else {
+				err := connect()
+				errCheck(err, "Failed to connect to beacon node")
+				config, err := grpc.FetchChainConfig(eth2GRPCConn)
+				if err != nil {
+					outputIf(!quiet, "Could not connect to beacon node; supply a connection with --connection or provide a fork version with --forkversion to generate a deposit")
+					os.Exit(_exitFailure)
+				}
+				genesisForkVersion, exists := config["GenesisForkVersion"]
+				assert(exists, "Failed to obtain genesis fork version")
+				forkVersion = genesisForkVersion.([]byte)
+			}
+			outputIf(debug, fmt.Sprintf("Fork version is %x", forkVersion))
+
+			domain := e2types.Domain(e2types.DomainDeposit, forkVersion, e2types.ZeroGenesisValidatorsRoot)
+			outputIf(debug, fmt.Sprintf("Domain is %x", domain))
+			signature, err := signStruct(validatorAccount, depositData, domain)
+			errCheck(err, "Failed to generate deposit data signature")
+
+			signedDepositData := struct {
+				PubKey                []byte `ssz-size:"48"`
+				WithdrawalCredentials []byte `ssz-size:"32"`
+				Value                 uint64
+				Signature             []byte `ssz-size:"96"`
+			}{
+				PubKey:                validatorPubKey.Marshal(),
+				WithdrawalCredentials: withdrawalCredentials,
+				Value:                 val,
+				Signature:             signature.Marshal(),
+			}
+			if debug {
+				fmt.Printf("Signed deposit data:\n")
+				fmt.Printf(" Public key: %#x\n", signedDepositData.PubKey)
+				fmt.Printf(" Withdrawal credentials: %#x\n", signedDepositData.WithdrawalCredentials)
+				fmt.Printf(" Value: %d\n", signedDepositData.Value)
+				fmt.Printf(" Signature: %#x\n", signedDepositData.Signature)
+			}
+
+			depositDataRoot, err := ssz.HashTreeRoot(signedDepositData)
+			errCheck(err, "Failed to generate deposit data root")
+			outputIf(debug, fmt.Sprintf("Deposit data root is %x", depositDataRoot))
+
+			if validatorDepositDataRaw {
+				// Build a raw transaction by hand
+				txData := []byte{0x22, 0x89, 0x51, 0x18}
+				// Pointer to validator public key
+				txData = append(txData, []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80}...)
+				// Pointer to withdrawal credentials
+				txData = append(txData, []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0}...)
+				// Pointer to validator signature
+				txData = append(txData, []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x20}...)
+				// Deposit data root
+				txData = append(txData, depositDataRoot[:]...)
+				// Validator public key (pad to 32-byte boundary)
+				txData = append(txData, []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30}...)
+				txData = append(txData, validatorPubKey.Marshal()...)
+				txData = append(txData, []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}...)
+				// Withdrawal credentials
+				txData = append(txData, []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20}...)
+				txData = append(txData, withdrawalCredentials...)
+				// Deposit signature
+				txData = append(txData, []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60}...)
+				txData = append(txData, signedDepositData.Signature...)
+				outputs = append(outputs, fmt.Sprintf("%#x", txData))
+			} else {
+				outputs = append(outputs, fmt.Sprintf(`{"name":"Deposit for %s","account":"%s","pubkey":"%#x","withdrawal_credentials":"%#x","signature":"%#x","value":%d,"deposit_data_root":"%#x","version":2}`, fmt.Sprintf("%s/%s", validatorWallet.Name(), validatorAccount.Name()), fmt.Sprintf("%s/%s", validatorWallet.Name(), validatorAccount.Name()), signedDepositData.PubKey, signedDepositData.WithdrawalCredentials, signedDepositData.Signature, val, depositDataRoot))
+			}
 		}
 
-		outputIf(debug, fmt.Sprintf("Deposit data signature is %x", signedDepositData.Signature))
+		if quiet {
+			os.Exit(0)
+		}
 
-		depositDataRoot, err := ssz.HashTreeRoot(signedDepositData)
-		errCheck(err, "Failed to generate deposit data root")
-		outputIf(debug, fmt.Sprintf("Deposit data root is %x", depositDataRoot))
-
-		outputIf(!quiet, fmt.Sprintf(`{"pubkey":"%048x","withdrawal_credentials":"%032x","signature":"%096x","value":%d,"deposit_data_root":"%032x"}`, signedDepositData.PubKey, signedDepositData.WithdrawalCredentials, signedDepositData.Signature, val, depositDataRoot))
-		os.Exit(0)
+		if len(outputs) == 1 {
+			fmt.Printf("%s\n", outputs[0])
+		} else {
+			fmt.Printf("[")
+			fmt.Print(strings.Join(outputs, ","))
+			fmt.Println("]")
+		}
 	},
 }
 
@@ -105,5 +207,8 @@ func init() {
 	validatorFlags(validatorDepositDataCmd)
 	validatorDepositDataCmd.Flags().StringVar(&validatorDepositDataValidatorAccount, "validatoraccount", "", "Account of the account carrying out the validation")
 	validatorDepositDataCmd.Flags().StringVar(&validatorDepositDataWithdrawalAccount, "withdrawalaccount", "", "Account of the account to which the validator funds will be withdrawn")
+	validatorDepositDataCmd.Flags().StringVar(&validatorDepositDataWithdrawalPubKey, "withdrawalpubkey", "", "Public key of the account to which the validator funds will be withdrawn")
 	validatorDepositDataCmd.Flags().StringVar(&validatorDepositDataDepositValue, "depositvalue", "", "Value of the amount to be deposited")
+	validatorDepositDataCmd.Flags().BoolVar(&validatorDepositDataRaw, "raw", false, "Print raw deposit data transaction data")
+	validatorDepositDataCmd.Flags().StringVar(&validatorDepositDataForkVersion, "forkversion", "", "Use a hard-coded fork version (default is to fetch it from the node)")
 }

cmd/validatorexit.go

@@ -0,0 +1,246 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"context"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/pkg/errors"
+	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"github.com/wealdtech/ethdo/grpc"
+	"github.com/wealdtech/ethdo/util"
+	e2types "github.com/wealdtech/go-eth2-types/v2"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
+)
+
+var validatorExitEpoch int64
+var validatorExitKey string
+var validatorExitJSON string
+var validatorExitJSONOutput bool
+
+var validatorExitCmd = &cobra.Command{
+	Use:   "exit",
+	Short: "Send an exit request for a validator",
+	Long: `Send an exit request for a validator.  For example:
+
+    ethdo validator exit --account=primary/validator --passphrase=secret
+
+In quiet mode this will return 0 if the transaction has been generated, otherwise 1.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
+
+		err := connect()
+		errCheck(err, "Failed to obtain connect to Ethereum 2 beacon chain node")
+
+		exit, signature := validatorExitHandleInput(ctx)
+		validatorExitHandleExit(ctx, exit, signature)
+		os.Exit(_exitSuccess)
+	},
+}
+
+func validatorExitHandleInput(ctx context.Context) (*ethpb.VoluntaryExit, e2types.Signature) {
+	if validatorExitJSON != "" {
+		return validatorExitHandleJSONInput(validatorExitJSON)
+	}
+	if viper.GetString("account") != "" {
+		account, err := accountFromPath(ctx, viper.GetString("account"))
+		errCheck(err, "Failed to access account")
+		return validatorExitHandleAccountInput(ctx, account)
+	}
+	if validatorExitKey != "" {
+		privKeyBytes, err := hex.DecodeString(strings.TrimPrefix(validatorExitKey, "0x"))
+		errCheck(err, fmt.Sprintf("Failed to decode key %s", validatorExitKey))
+		account, err := util.NewScratchAccount(privKeyBytes, nil)
+		errCheck(err, "Invalid private key")
+		return validatorExitHandleAccountInput(ctx, account)
+	}
+	die("one of --json, --account or --key is required")
+	return nil, nil
+}
+
+func validatorExitHandleJSONInput(input string) (*ethpb.VoluntaryExit, e2types.Signature) {
+	data := &validatorExitData{}
+	err := json.Unmarshal([]byte(input), data)
+	errCheck(err, "Invalid JSON input")
+	exit := &ethpb.VoluntaryExit{
+		Epoch:          data.Epoch,
+		ValidatorIndex: data.ValidatorIndex,
+	}
+	signature, err := e2types.BLSSignatureFromBytes(data.Signature)
+	errCheck(err, "Invalid signature")
+	return exit, signature
+}
+
+func validatorExitHandleAccountInput(ctx context.Context, account e2wtypes.Account) (*ethpb.VoluntaryExit, e2types.Signature) {
+	exit := &ethpb.VoluntaryExit{}
+
+	// Beacon chain config required for later work.
+	config, err := grpc.FetchChainConfig(eth2GRPCConn)
+	errCheck(err, "Failed to obtain beacon chain configuration")
+	secondsPerSlot, ok := config["SecondsPerSlot"].(uint64)
+	assert(ok, "Failed to obtain seconds per slot from chain")
+	slotsPerEpoch, ok := config["SlotsPerEpoch"].(uint64)
+	assert(ok, "Failed to obtain slots per epoch from chain")
+	secondsPerEpoch := secondsPerSlot * slotsPerEpoch
+
+	// Fetch the validator's index.
+	index, err := grpc.FetchValidatorIndex(eth2GRPCConn, account)
+	errCheck(err, "Failed to obtain validator index")
+	outputIf(debug, fmt.Sprintf("Validator index is %d", index))
+	exit.ValidatorIndex = index
+
+	// Ensure the validator is active.
+	state, err := grpc.FetchValidatorState(eth2GRPCConn, account)
+	errCheck(err, "Failed to obtain validator state")
+	outputIf(debug, fmt.Sprintf("Validator state is %v", state))
+	assert(state == ethpb.ValidatorStatus_ACTIVE, "Validator must be active to exit")
+
+	if validatorExitEpoch < 0 {
+		// Ensure the validator has been active long enough to exit.
+		validator, err := grpc.FetchValidator(eth2GRPCConn, account)
+		errCheck(err, "Failed to obtain validator information")
+		outputIf(debug, fmt.Sprintf("Activation epoch is %v", validator.ActivationEpoch))
+		shardCommitteePeriod, ok := config["ShardCommitteePeriod"].(uint64)
+		assert(ok, "Failed to obtain shard committee period from chain")
+		earliestExitEpoch := validator.ActivationEpoch + shardCommitteePeriod
+
+		genesisTime, err := grpc.FetchGenesisTime(eth2GRPCConn)
+		errCheck(err, "Failed to obtain genesis time")
+
+		currentEpoch := uint64(time.Since(genesisTime).Seconds()) / secondsPerEpoch
+		assert(currentEpoch >= earliestExitEpoch, fmt.Sprintf("Validator cannot exit until %s ( epoch %d); transaction not sent", genesisTime.Add(time.Duration(secondsPerEpoch*earliestExitEpoch)*time.Second).Format(time.UnixDate), earliestExitEpoch))
+		outputIf(verbose, "Validator confirmed to be in a suitable state")
+		exit.Epoch = currentEpoch
+	} else {
+		// User-specified epoch; no checks.
+		exit.Epoch = uint64(validatorExitEpoch)
+	}
+
+	// TODO fetch current fork version from config (currently using genesis fork version)
+	currentForkVersion := config["GenesisForkVersion"].([]byte)
+	outputIf(debug, fmt.Sprintf("Current fork version is %x", currentForkVersion))
+	genesisValidatorsRoot, err := grpc.FetchGenesisValidatorsRoot(eth2GRPCConn)
+	outputIf(debug, fmt.Sprintf("Genesis validators root is %x", genesisValidatorsRoot))
+	errCheck(err, "Failed to obtain genesis validators root")
+	domain := e2types.Domain(e2types.DomainVoluntaryExit, currentForkVersion, genesisValidatorsRoot)
+
+	alreadyUnlocked, err := unlock(account)
+	errCheck(err, "Failed to unlock account; please confirm passphrase is correct")
+	signature, err := signStruct(account, exit, domain)
+	if !alreadyUnlocked {
+		errCheck(lock(account), "Failed to re-lock account")
+	}
+	errCheck(err, "Failed to sign exit proposal")
+
+	return exit, signature
+}
+
+// validatorExitHandleExit handles the exit request.
+func validatorExitHandleExit(ctx context.Context, exit *ethpb.VoluntaryExit, signature e2types.Signature) {
+	if validatorExitJSONOutput {
+		data := &validatorExitData{
+			Epoch:          exit.Epoch,
+			ValidatorIndex: exit.ValidatorIndex,
+			Signature:      signature.Marshal(),
+		}
+		res, err := json.Marshal(data)
+		errCheck(err, "Failed to generate JSON")
+		outputIf(!quiet, string(res))
+	} else {
+		proposal := &ethpb.SignedVoluntaryExit{
+			Exit:      exit,
+			Signature: signature.Marshal(),
+		}
+
+		validatorClient := ethpb.NewBeaconNodeValidatorClient(eth2GRPCConn)
+		_, err := validatorClient.ProposeExit(ctx, proposal)
+		errCheck(err, "Failed to propose exit")
+		outputIf(!quiet, "Validator exit transaction sent")
+	}
+}
+
+func init() {
+	validatorCmd.AddCommand(validatorExitCmd)
+	validatorFlags(validatorExitCmd)
+	validatorExitCmd.Flags().Int64Var(&validatorExitEpoch, "epoch", -1, "Epoch at which to exit (defaults to current epoch)")
+	validatorExitCmd.Flags().StringVar(&validatorExitKey, "key", "", "Private key if account not known by ethdo")
+	validatorExitCmd.Flags().BoolVar(&validatorExitJSONOutput, "json-output", false, "Print JSON transaction; do not broadcast to network")
+	validatorExitCmd.Flags().StringVar(&validatorExitJSON, "json", "", "Use JSON as created by --json-output to exit")
+}
+
+type validatorExitData struct {
+	Epoch          uint64 `json:"epoch"`
+	ValidatorIndex uint64 `json:"validator_index"`
+	Signature      []byte `json:"signature"`
+}
+
+// MarshalJSON implements custom JSON marshaller.
+func (d *validatorExitData) MarshalJSON() ([]byte, error) {
+	return []byte(fmt.Sprintf(`{"epoch":%d,"validator_index":%d,"signature":"%#x"}`, d.Epoch, d.ValidatorIndex, d.Signature)), nil
+}
+
+// UnmarshalJSON implements custom JSON unmarshaller.
+func (d *validatorExitData) UnmarshalJSON(data []byte) error {
+	var v map[string]interface{}
+	if err := json.Unmarshal(data, &v); err != nil {
+		return err
+	}
+
+	if val, exists := v["epoch"]; exists {
+		var ok bool
+		epoch, ok := val.(float64)
+		if !ok {
+			return errors.New("epoch invalid")
+		}
+		d.Epoch = uint64(epoch)
+	} else {
+		return errors.New("epoch missing")
+	}
+
+	if val, exists := v["validator_index"]; exists {
+		var ok bool
+		validatorIndex, ok := val.(float64)
+		if !ok {
+			return errors.New("validator_index invalid")
+		}
+		d.ValidatorIndex = uint64(validatorIndex)
+	} else {
+		return errors.New("validator_index missing")
+	}
+
+	if val, exists := v["signature"]; exists {
+		signatureBytes, ok := val.(string)
+		if !ok {
+			return errors.New("signature invalid")
+		}
+		signature, err := hex.DecodeString(strings.TrimPrefix(signatureBytes, "0x"))
+		if err != nil {
+			return errors.Wrap(err, "signature invalid")
+		}
+		d.Signature = signature
+	} else {
+		return errors.New("signature missing")
+	}
+
+	return nil
+}

cmd/validatorinfo.go

@@ -0,0 +1,210 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"bytes"
+	"context"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/pkg/errors"
+	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"github.com/wealdtech/ethdo/grpc"
+	"github.com/wealdtech/ethdo/util"
+	e2wallet "github.com/wealdtech/go-eth2-wallet"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
+	string2eth "github.com/wealdtech/go-string2eth"
+)
+
+var validatorInfoPubKey string
+
+var validatorInfoCmd = &cobra.Command{
+	Use:   "info",
+	Short: "Obtain information about a validator",
+	Long: `Obtain information about validator.  For example:
+
+    ethdo validator info --account=primary/validator
+
+In quiet mode this will return 0 if the validator information can be obtained, otherwise 1.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		assert(viper.GetString("account") != "" || validatorInfoPubKey != "", "--account or --pubkey is required")
+
+		err := connect()
+		errCheck(err, "Failed to obtain connection to Ethereum 2 beacon chain node")
+
+		account, err := validatorInfoAccount()
+		errCheck(err, "Failed to obtain validator account")
+
+		validatorInfo, err := grpc.FetchValidatorInfo(eth2GRPCConn, account)
+		errCheck(err, "Failed to obtain validator information")
+		validator, err := grpc.FetchValidator(eth2GRPCConn, account)
+		if err != nil {
+			// We can live with this.
+			validator = nil
+		}
+		if validatorInfo.Status != ethpb.ValidatorStatus_DEPOSITED &&
+			validatorInfo.Status != ethpb.ValidatorStatus_UNKNOWN_STATUS {
+			errCheck(err, "Failed to obtain validator definition")
+		}
+		assert(validatorInfo.Status != ethpb.ValidatorStatus_UNKNOWN_STATUS, "Not known as a validator")
+
+		if quiet {
+			os.Exit(_exitSuccess)
+		}
+
+		outputIf(verbose, fmt.Sprintf("Epoch of data: %v", validatorInfo.Epoch))
+		outputIf(verbose && validatorInfo.Status != ethpb.ValidatorStatus_DEPOSITED, fmt.Sprintf("Index: %v", validatorInfo.Index))
+		outputIf(verbose, fmt.Sprintf("Public key: %#x", validatorInfo.PublicKey))
+		fmt.Printf("Status: %s\n", strings.Title(strings.ToLower(validatorInfo.Status.String())))
+		fmt.Printf("Balance: %s\n", string2eth.GWeiToString(validatorInfo.Balance, true))
+
+		if verbose {
+			network := network()
+			outputIf(debug, fmt.Sprintf("Network is %s", network))
+			deposits, totalDeposited, err := graphData(network, validator.PublicKey)
+			if err == nil {
+				fmt.Printf("Number of deposits: %d\n", deposits)
+				fmt.Printf("Total deposited: %s\n", string2eth.GWeiToString(totalDeposited, true))
+			}
+		}
+
+		if validatorInfo.Status == ethpb.ValidatorStatus_ACTIVE ||
+			validatorInfo.Status == ethpb.ValidatorStatus_EXITING ||
+			validatorInfo.Status == ethpb.ValidatorStatus_SLASHING {
+			fmt.Printf("Effective balance: %s\n", string2eth.GWeiToString(validatorInfo.EffectiveBalance, true))
+		}
+
+		if validator != nil {
+			outputIf(verbose, fmt.Sprintf("Withdrawal credentials: %#x", validator.WithdrawalCredentials))
+		}
+
+		transition := time.Unix(int64(validatorInfo.TransitionTimestamp), 0)
+		transitionPassed := int64(validatorInfo.TransitionTimestamp) <= time.Now().Unix()
+		switch validatorInfo.Status {
+		case ethpb.ValidatorStatus_DEPOSITED:
+			if validatorInfo.TransitionTimestamp != 0 {
+				fmt.Printf("Inclusion in chain: %s\n", transition)
+			}
+		case ethpb.ValidatorStatus_PENDING:
+			fmt.Printf("Activation: %s\n", transition)
+		case ethpb.ValidatorStatus_EXITING, ethpb.ValidatorStatus_SLASHING:
+			fmt.Printf("Attesting finishes: %s\n", transition)
+		case ethpb.ValidatorStatus_EXITED:
+			if transitionPassed {
+				fmt.Printf("Funds withdrawable: Now\n")
+			} else {
+				fmt.Printf("Funds withdrawable: %s\n", transition)
+			}
+		}
+
+		os.Exit(_exitSuccess)
+	},
+}
+
+// validatorInfoAccount obtains the account for the validator info command.
+func validatorInfoAccount() (e2wtypes.Account, error) {
+	var account e2wtypes.Account
+	if viper.GetString("account") != "" {
+		wallet, err := openWallet()
+		if err != nil {
+			return nil, errors.Wrap(err, "failed to open wallet")
+		}
+		_, accountName, err := e2wallet.WalletAndAccountNames(viper.GetString("account"))
+		if err != nil {
+			return nil, errors.Wrap(err, "failed to obtain account name")
+		}
+		accountByNameProvider, isProvider := wallet.(e2wtypes.WalletAccountByNameProvider)
+		if !isProvider {
+			return nil, errors.New("failed to ask wallet for account by name")
+		}
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
+		account, err = accountByNameProvider.AccountByName(ctx, accountName)
+		if err != nil {
+			return nil, errors.Wrap(err, "failed to obtain account")
+		}
+	} else {
+		pubKeyBytes, err := hex.DecodeString(strings.TrimPrefix(validatorInfoPubKey, "0x"))
+		if err != nil {
+			return nil, errors.Wrap(err, fmt.Sprintf("failed to decode public key %s", validatorInfoPubKey))
+		}
+		account, err = util.NewScratchAccount(nil, pubKeyBytes)
+		if err != nil {
+			return nil, errors.Wrap(err, fmt.Sprintf("invalid public key %s", validatorInfoPubKey))
+		}
+	}
+	return account, nil
+}
+
+// graphData returns data from the graph about number and amount of deposits
+func graphData(network string, validatorPubKey []byte) (uint64, uint64, error) {
+	subgraph := fmt.Sprintf("attestantio/eth2deposits-%s", strings.ToLower(network))
+	query := fmt.Sprintf(`{"query": "{deposits(where: {validatorPubKey:\"%#x\"}) { id amount withdrawalCredentials }}"}`, validatorPubKey)
+	url := fmt.Sprintf("https://api.thegraph.com/subgraphs/name/%s", subgraph)
+	graphResp, err := http.Post(url, "application/json", bytes.NewBufferString(query))
+	if err != nil {
+		return 0, 0, errors.Wrap(err, "failed to check if there is already a deposit for this validator")
+	}
+	defer graphResp.Body.Close()
+	body, err := ioutil.ReadAll(graphResp.Body)
+	if err != nil {
+		return 0, 0, errors.Wrap(err, "bad information returned from existing deposit check")
+	}
+
+	type graphDeposit struct {
+		Index                 string `json:"index"`
+		Amount                string `json:"amount"`
+		WithdrawalCredentials string `json:"withdrawalCredentials"`
+	}
+	type graphData struct {
+		Deposits []*graphDeposit `json:"deposits,omitempty"`
+	}
+	type graphResponse struct {
+		Data *graphData `json:"data,omitempty"`
+	}
+
+	var response graphResponse
+	if err := json.Unmarshal(body, &response); err != nil {
+		return 0, 0, errors.Wrap(err, "invalid data returned from existing deposit check")
+	}
+	deposits := uint64(0)
+	totalDeposited := uint64(0)
+	if response.Data != nil && len(response.Data.Deposits) > 0 {
+		for _, deposit := range response.Data.Deposits {
+			deposits++
+			depositAmount, err := strconv.ParseUint(deposit.Amount, 10, 64)
+			if err != nil {
+				return 0, 0, errors.Wrap(err, fmt.Sprintf("invalid deposit amount from pre-existing deposit %s", deposit.Amount))
+			}
+			totalDeposited += depositAmount
+		}
+	}
+	return deposits, totalDeposited, nil
+}
+
+func init() {
+	validatorCmd.AddCommand(validatorInfoCmd)
+	validatorInfoCmd.Flags().StringVar(&validatorInfoPubKey, "pubkey", "", "Public key for which to obtain status")
+	validatorFlags(validatorInfoCmd)
+}

cmd/version.go

@@ -1,4 +1,4 @@
-// Copyright © 2019 Weald Technology Trading
+// Copyright © 2019, 2020 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -22,15 +22,17 @@ import (
 	"github.com/spf13/viper"
 )
 
+var ReleaseVersion = "local build from v1.5.1"
+
 // versionCmd represents the version command
 var versionCmd = &cobra.Command{
 	Use:   "version",
-	Short: "Version of Ethdo",
-	Long: `Obtain the version of Ethdo.  For example:
+	Short: "Version of ethdo",
+	Long: `Obtain the version of ethdo.  For example:
 
-    ethdo version.`,
+    ethdo version`,
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println("1.1.0")
+		fmt.Println(ReleaseVersion)
 		if viper.GetBool("verbose") {
 			buildInfo, ok := dbg.ReadBuildInfo()
 			if ok {
@@ -44,7 +46,7 @@ var versionCmd = &cobra.Command{
 				}
 			}
 		}
-		os.Exit(_exit_success)
+		os.Exit(_exitSuccess)
 	},
 }
 

cmd/wallet.go

@@ -15,10 +15,10 @@ package cmd
 
 import (
 	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+	"github.com/spf13/viper"
 )
 
-var walletWallet string
-
 // walletCmd represents the wallet command
 var walletCmd = &cobra.Command{
 	Use:   "wallet",
@@ -30,6 +30,16 @@ func init() {
 	RootCmd.AddCommand(walletCmd)
 }
 
+var walletFlag *pflag.Flag
+
 func walletFlags(cmd *cobra.Command) {
-	cmd.Flags().StringVar(&walletWallet, "wallet", "", "Name of the wallet")
+	if walletFlag == nil {
+		cmd.Flags().String("wallet", "", "Name of the wallet")
+		walletFlag = cmd.Flags().Lookup("wallet")
+		if err := viper.BindPFlag("wallet", walletFlag); err != nil {
+			panic(err)
+		}
+	} else {
+		cmd.Flags().AddFlag(walletFlag)
+	}
 }

cmd/walletaccounts.go

@@ -14,13 +14,16 @@
 package cmd
 
 import (
+	"context"
 	"fmt"
 	"os"
 	"sort"
+	"strconv"
+	"strings"
 
-	"github.com/google/uuid"
 	"github.com/spf13/cobra"
-	types "github.com/wealdtech/go-eth2-types"
+	"github.com/spf13/viper"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
 )
 
 var walletAccountsCmd = &cobra.Command{
@@ -32,34 +35,74 @@ var walletAccountsCmd = &cobra.Command{
 
 In quiet mode this will return 0 if the wallet holds any addresses, otherwise 1.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		assert(walletWallet != "", "wallet is required")
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
 
-		wallet, err := walletFromPath(walletWallet)
+		assert(viper.GetString("wallet") != "", "wallet is required")
+
+		wallet, err := openWallet()
 		errCheck(err, "Failed to access wallet")
 
-		// List the accounts.  They come to us in random order and we want them in name order, so store them in an array and sort
-		output := make([]addressListResult, 0)
-		for account := range wallet.Accounts() {
-			output = append(output, addressListResult{id: account.ID(), name: account.Name(), pubkey: account.PublicKey()})
+		accounts := make([]e2wtypes.Account, 0, 128)
+		for account := range wallet.Accounts(ctx) {
+			accounts = append(accounts, account)
+		}
+		assert(len(accounts) > 0, "")
+
+		if _, isPathProvider := accounts[0].(e2wtypes.AccountPathProvider); isPathProvider {
+			// Order accounts by their path components.
+			sort.Slice(accounts, func(i int, j int) bool {
+				iBits := strings.Split(accounts[i].(e2wtypes.AccountPathProvider).Path(), "/")
+				jBits := strings.Split(accounts[j].(e2wtypes.AccountPathProvider).Path(), "/")
+				for index := range iBits {
+					if iBits[index] == "m" && jBits[index] == "m" {
+						continue
+					}
+					if len(jBits) <= index {
+						return false
+					}
+					iBit, err := strconv.ParseUint(iBits[index], 10, 64)
+					if err != nil {
+						return true
+					}
+					jBit, err := strconv.ParseUint(jBits[index], 10, 64)
+					if err != nil {
+						return false
+					}
+					if iBit < jBit {
+						return true
+					}
+					if iBit > jBit {
+						return false
+					}
+				}
+				return len(jBits) > len(iBits)
+			})
+		} else {
+			// Order accounts by their name.
+			sort.Slice(accounts, func(i int, j int) bool {
+				return strings.Compare(accounts[i].Name(), accounts[j].Name()) < 0
+			})
 		}
 
-		if quiet {
-			if len(output) == 0 {
-				os.Exit(1)
-			}
-			os.Exit(0)
-		}
-
-		sort.Slice(output, func(i, j int) bool {
-			return output[i].name < output[j].name
-		})
-		for _, out := range output {
+		for _, account := range accounts {
+			outputIf(!quiet, account.Name())
 			if verbose {
-				fmt.Printf("%s\n\tUUID:\t\t%s\n\tPublic key:\t0x%048x\n", out.name, out.id, out.pubkey.Marshal())
-			} else if !quiet {
-				fmt.Printf("%s\n", out.name)
+				fmt.Printf(" UUID: %v\n", account.ID())
+				if pathProvider, isProvider := account.(e2wtypes.AccountPathProvider); isProvider {
+					if pathProvider.Path() != "" {
+						fmt.Printf("Path: %s\n", pathProvider.Path())
+					}
+				}
+				if pubKeyProvider, isProvider := account.(e2wtypes.AccountPublicKeyProvider); isProvider {
+					fmt.Printf(" Public key: %#x\n", pubKeyProvider.PublicKey().Marshal())
+				}
+				if compositePubKeyProvider, isProvider := account.(e2wtypes.AccountCompositePublicKeyProvider); isProvider {
+					fmt.Printf(" Composite public key: %#x\n", compositePubKeyProvider.CompositePublicKey().Marshal())
+				}
 			}
 		}
+		os.Exit(_exitSuccess)
 	},
 }
 
@@ -67,9 +110,3 @@ func init() {
 	walletCmd.AddCommand(walletAccountsCmd)
 	walletFlags(walletAccountsCmd)
 }
-
-type addressListResult struct {
-	id     uuid.UUID
-	name   string
-	pubkey types.PublicKey
-}

cmd/walletcreate.go

@@ -1,4 +1,4 @@
-// Copyright © 2019 Weald Technology Trading
+// Copyright © 2019, 2020 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -14,14 +14,22 @@
 package cmd
 
 import (
+	"context"
+	"crypto/rand"
+	"fmt"
+	"os"
 	"strings"
 
+	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
-	wallet "github.com/wealdtech/go-eth2-wallet"
+	"github.com/spf13/viper"
+	bip39 "github.com/tyler-smith/go-bip39"
+	distributed "github.com/wealdtech/go-eth2-wallet-distributed"
+	keystorev4 "github.com/wealdtech/go-eth2-wallet-encryptor-keystorev4"
+	hd "github.com/wealdtech/go-eth2-wallet-hd/v2"
+	nd "github.com/wealdtech/go-eth2-wallet-nd/v2"
 )
 
-var walletCreateType string
-
 var walletCreateCmd = &cobra.Command{
 	Use:   "create",
 	Short: "Create a wallet",
@@ -31,16 +39,28 @@ var walletCreateCmd = &cobra.Command{
 
 In quiet mode this will return 0 if the wallet is created successfully, otherwise 1.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		assert(walletWallet != "", "--wallet is required")
-		assert(walletCreateType != "", "--type is required")
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
+
+		assert(viper.GetString("remote") == "", "wallet create not available with remote wallets")
+		assert(viper.GetString("wallet") != "", "--wallet is required")
+		assert(viper.GetString("type") != "", "--type is required")
 
 		var err error
-		switch strings.ToLower(walletCreateType) {
+		switch strings.ToLower(viper.GetString("type")) {
 		case "non-deterministic", "nd":
-			_, err = wallet.CreateWallet(walletWallet, wallet.WithType("nd"))
+			assert(viper.GetString("mnemonic") == "", "--mnemonic is not allowed with non-deterministic wallets")
+			err = walletCreateND(ctx, viper.GetString("wallet"))
 		case "hierarchical deterministic", "hd":
-			assert(rootWalletPassphrase != "", "--walletpassphrase is required for hierarchical deterministic wallets")
-			_, err = wallet.CreateWallet(walletWallet, wallet.WithType("hd"), wallet.WithPassphrase([]byte(rootWalletPassphrase)))
+			if quiet {
+				fmt.Printf("Creation of hierarchical deterministic wallets prints its mnemonic, so cannot be run with the --quiet flag")
+				os.Exit(_exitFailure)
+			}
+			assert(getWalletPassphrase() != "", "--walletpassphrase is required for hierarchical deterministic wallets")
+			err = walletCreateHD(ctx, viper.GetString("wallet"), getWalletPassphrase(), viper.GetString("mnemonic"))
+		case "distributed":
+			assert(viper.GetString("mnemonic") == "", "--mnemonic is not allowed with distributed wallets")
+			err = walletCreateDistributed(ctx, viper.GetString("wallet"))
 		default:
 			die("unknown wallet type")
 		}
@@ -48,8 +68,78 @@ In quiet mode this will return 0 if the wallet is created successfully, otherwis
 	},
 }
 
+// walletCreateND creates a non-deterministic wallet.
+func walletCreateND(ctx context.Context, name string) error {
+	_, err := nd.CreateWallet(ctx, name, store, keystorev4.New())
+	return err
+}
+
+// walletCreateDistributed creates a distributed wallet.
+func walletCreateDistributed(ctx context.Context, name string) error {
+	_, err := distributed.CreateWallet(ctx, name, store, keystorev4.New())
+	return err
+}
+
+// walletCreateHD creates a hierarchical-deterministic wallet.
+func walletCreateHD(ctx context.Context, name string, passphrase string, mnemonic string) error {
+	encryptor := keystorev4.New()
+
+	printMnemonic := mnemonic == ""
+	mnemonicPassphrase := ""
+
+	if mnemonic == "" {
+		// Create a new random mnemonic.
+		entropy := make([]byte, 32)
+		_, err := rand.Read(entropy)
+		if err != nil {
+			return errors.Wrap(err, "failed to generate entropy for wallet mnemonic")
+		}
+		mnemonic, err = bip39.NewMnemonic(entropy)
+		if err != nil {
+			return errors.Wrap(err, "failed to generate wallet mnemonic")
+		}
+	} else {
+		// We have an existing mnemonic.  If there are more than 24 words we treat the additional characters as the passphrase.
+		mnemonicParts := strings.Split(mnemonic, " ")
+		if len(mnemonicParts) > 24 {
+			mnemonic = strings.Join(mnemonicParts[:24], " ")
+			mnemonicPassphrase = strings.Join(mnemonicParts[24:], " ")
+		}
+	}
+
+	// Ensure the mnemonic is valid
+	if !bip39.IsMnemonicValid(mnemonic) {
+		return errors.New("mnemonic is not valid")
+	}
+
+	// Create seed from mnemonic and passphrase.
+	seed := bip39.NewSeed(mnemonic, mnemonicPassphrase)
+
+	_, err := hd.CreateWallet(ctx, name, []byte(passphrase), store, encryptor, seed)
+
+	if printMnemonic {
+		fmt.Printf(`The following phrase is your mnemonic for this wallet:
+
+%s
+
+Anyone with access to this mnemonic can recreate the accounts in this wallet, so please store this mnemonic safely.  More information about mnemonics can be found at https://support.mycrypto.com/general-knowledge/cryptography/how-do-mnemonic-phrases-work
+
+Please note this mnemonic is not stored within the wallet, so cannot be retrieved or displayed again.  As such, this mnemonic should be written down or otherwise protected before proceeding.
+`, mnemonic)
+	}
+
+	return err
+}
+
 func init() {
 	walletCmd.AddCommand(walletCreateCmd)
 	walletFlags(walletCreateCmd)
-	walletCreateCmd.Flags().StringVar(&walletCreateType, "type", "non-deterministic", "Type of wallet to create (non-deterministic or hierarchical deterministic)")
+	walletCreateCmd.Flags().String("type", "non-deterministic", "Type of wallet to create (non-deterministic or hierarchical deterministic)")
+	if err := viper.BindPFlag("type", walletCreateCmd.Flags().Lookup("type")); err != nil {
+		panic(err)
+	}
+	walletCreateCmd.Flags().String("mnemonic", "", "The 24-word mnemonic for a hierarchical deterministic wallet")
+	if err := viper.BindPFlag("mnemonic", walletCreateCmd.Flags().Lookup("mnemonic")); err != nil {
+		panic(err)
+	}
 }

cmd/walletdelete.go

@@ -0,0 +1,56 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
+)
+
+var walletDeleteCmd = &cobra.Command{
+	Use:   "delete",
+	Short: "Delete a wallet",
+	Long: `Delete a wallet.  For example:
+
+    ethdo wallet delete --wallet=primary
+
+In quiet mode this will return 0 if the wallet has been deleted, otherwise 1.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		assert(viper.GetString("remote") == "", "wallet delete not available with remote wallets")
+		assert(viper.GetString("wallet") != "", "--wallet is required")
+
+		wallet, err := walletFromPath(viper.GetString("wallet"))
+		errCheck(err, "Failed to access wallet")
+
+		storeProvider, ok := wallet.(wtypes.StoreProvider)
+		assert(ok, "Cannot obtain store for the wallet")
+		store := storeProvider.Store()
+		storeLocationProvider, ok := store.(wtypes.StoreLocationProvider)
+		assert(ok, "Cannot obtain store location for the wallet")
+		walletLocation := filepath.Join(storeLocationProvider.Location(), wallet.ID().String())
+		err = os.RemoveAll(walletLocation)
+		errCheck(err, "Failed to delete wallet")
+
+		os.Exit(_exitSuccess)
+	},
+}
+
+func init() {
+	walletCmd.AddCommand(walletDeleteCmd)
+	walletFlags(walletDeleteCmd)
+}

cmd/walletexport.go

@@ -14,11 +14,13 @@
 package cmd
 
 import (
+	"context"
 	"fmt"
 	"os"
 
 	"github.com/spf13/cobra"
-	types "github.com/wealdtech/go-eth2-wallet-types"
+	"github.com/spf13/viper"
+	types "github.com/wealdtech/go-eth2-wallet-types/v2"
 )
 
 var walletExportPassphrase string
@@ -32,20 +34,24 @@ var walletExportCmd = &cobra.Command{
 
 In quiet mode this will return 0 if the wallet is able to be exported, otherwise 1.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		assert(walletWallet != "", "--wallet is required")
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
+
+		assert(viper.GetString("remote") == "", "wallet export not available with remote wallets")
+		assert(viper.GetString("wallet") != "", "--wallet is required")
 		assert(walletExportPassphrase != "", "--exportpassphrase is required")
 
-		wallet, err := walletFromPath(walletWallet)
+		wallet, err := walletFromPath(viper.GetString("wallet"))
 		errCheck(err, "Failed to access wallet")
 
 		_, ok := wallet.(types.WalletExporter)
 		assert(ok, fmt.Sprintf("wallets of type %q do not allow exporting accounts", wallet.Type()))
 
-		exportData, err := wallet.(types.WalletExporter).Export([]byte(walletExportPassphrase))
+		exportData, err := wallet.(types.WalletExporter).Export(ctx, []byte(walletExportPassphrase))
 		errCheck(err, "Failed to export wallet")
 
 		outputIf(!quiet, fmt.Sprintf("0x%x", exportData))
-		os.Exit(_exit_success)
+		os.Exit(_exitSuccess)
 	},
 }
 

cmd/walletimport.go

@@ -14,15 +14,23 @@
 package cmd
 
 import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
 	"os"
+	"strings"
 
+	"github.com/google/uuid"
 	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
 	"github.com/wealdtech/go-bytesutil"
-	wallet "github.com/wealdtech/go-eth2-wallet"
+	"github.com/wealdtech/go-ecodec"
+	e2wallet "github.com/wealdtech/go-eth2-wallet"
 )
 
 var walletImportData string
 var walletImportPassphrase string
+var walletImportVerify bool
 
 var walletImportCmd = &cobra.Command{
 	Use:   "import",
@@ -33,22 +41,67 @@ var walletImportCmd = &cobra.Command{
 
 In quiet mode this will return 0 if the wallet is imported successfully, otherwise 1.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		assert(walletImportData != "", "--walletimportdata is required")
+		assert(viper.GetString("remote") == "", "wallet import not available with remote wallets")
+		assert(walletImportData != "", "--importdata is required")
 		assert(walletImportPassphrase != "", "--importpassphrase is required")
+		assert(viper.GetString("wallet") == "", "--wallet is not allowed (the wallet will retain its name)")
 
+		if !strings.HasPrefix(walletImportData, "0x") {
+			outputIf(debug, fmt.Sprintf("Reading wallet import from file %s", walletImportData))
+			// Assume this is a path
+			fileData, err := ioutil.ReadFile(walletImportData)
+			errCheck(err, "Failed to read wallet import data")
+			walletImportData = strings.TrimSpace(string(fileData))
+		}
+		outputIf(debug, fmt.Sprintf("Wallet import data is of length %d", len(walletImportData)))
 		importData, err := bytesutil.FromHexString(walletImportData)
 		errCheck(err, "Failed to decode wallet data")
 
-		_, err = wallet.ImportWallet(importData, []byte(walletImportPassphrase))
-		errCheck(err, "Failed to import wallet")
+		if walletImportVerify {
+			type accountInfo struct {
+				Name string `json:"name"`
+			}
+			type walletInfo struct {
+				ID   uuid.UUID `json:"uuid"`
+				Name string    `json:"name"`
+				Type string    `json:"type"`
+			}
+			type export struct {
+				Wallet   *walletInfo    `json:"wallet"`
+				Accounts []*accountInfo `json:"accounts"`
+			}
 
-		os.Exit(_exit_success)
+			data, err := ecodec.Decrypt(importData, []byte(walletImportPassphrase))
+			errCheck(err, "Failed to decrypt wallet")
+			ext := &export{}
+			err = json.Unmarshal(data, ext)
+			errCheck(err, "Failed to read wallet")
+
+			outputIf(!quiet, fmt.Sprintf("Wallet name: %s", ext.Wallet.Name))
+			outputIf(!quiet, fmt.Sprintf("Wallet type: %s", ext.Wallet.Type))
+			outputIf(verbose, fmt.Sprintf("Wallet UUID: %s", ext.Wallet.ID))
+			if verbose {
+				fmt.Printf("Wallet accounts:\n")
+				for _, account := range ext.Accounts {
+					outputIf(verbose, fmt.Sprintf("  %s", account.Name))
+				}
+			} else {
+				outputIf(!quiet, fmt.Sprintf("Wallet accounts: %d", len(ext.Accounts)))
+			}
+
+		} else {
+			_, err = e2wallet.ImportWallet(importData, []byte(walletImportPassphrase))
+			errCheck(err, "Failed to import wallet")
+		}
+
+		os.Exit(_exitSuccess)
 	},
 }
 
 func init() {
 	walletCmd.AddCommand(walletImportCmd)
 	walletFlags(walletImportCmd)
-	walletImportCmd.Flags().StringVar(&walletImportData, "importdata", "", "The data to import")
+	walletImportCmd.Flags().StringVar(&walletImportData, "importdata", "", "The data to import, or the name of a file to read")
 	walletImportCmd.Flags().StringVar(&walletImportPassphrase, "importpassphrase", "", "Passphrase protecting the data to import")
+	walletImportCmd.Flags().BoolVar(&walletImportVerify, "verify", false, "Verify the wallet can be imported, but do not import it")
 }

cmd/walletinfo.go

@@ -14,10 +14,14 @@
 package cmd
 
 import (
+	"context"
 	"fmt"
 	"os"
+	"path/filepath"
 
 	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
 )
 
 var walletInfoCmd = &cobra.Command{
@@ -29,9 +33,13 @@ var walletInfoCmd = &cobra.Command{
 
 In quiet mode this will return 0 if the wallet exists, otherwise 1.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		assert(walletWallet != "", "Wallet is required")
+		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+		defer cancel()
 
-		wallet, err := walletFromPath(walletWallet)
+		assert(viper.GetString("remote") == "", "wallet info not available with remote wallets")
+		assert(viper.GetString("wallet") != "", "--wallet is required")
+
+		wallet, err := walletFromPath(viper.GetString("wallet"))
 		errCheck(err, "unknown wallet")
 
 		if quiet {
@@ -40,10 +48,19 @@ In quiet mode this will return 0 if the wallet exists, otherwise 1.`,
 
 		outputIf(verbose, fmt.Sprintf("UUID: %v", wallet.ID()))
 		fmt.Printf("Type: %s\n", wallet.Type())
+		if verbose {
+			if storeProvider, ok := wallet.(wtypes.StoreProvider); ok {
+				store := storeProvider.Store()
+				fmt.Printf("Store: %s\n", store.Name())
+				if storeLocationProvider, ok := store.(wtypes.StoreLocationProvider); ok {
+					fmt.Printf("Location: %s\n", filepath.Join(storeLocationProvider.Location(), wallet.ID().String()))
+				}
+			}
+		}
 
 		// Count the accounts.
 		accounts := 0
-		for range wallet.Accounts() {
+		for range wallet.Accounts(ctx) {
 			accounts++
 		}
 		fmt.Printf("Accounts: %d\n", accounts)

cmd/walletlist.go

@@ -18,7 +18,8 @@ import (
 	"os"
 
 	"github.com/spf13/cobra"
-	wallet "github.com/wealdtech/go-eth2-wallet"
+	"github.com/spf13/viper"
+	e2wallet "github.com/wealdtech/go-eth2-wallet"
 )
 
 var walletListCmd = &cobra.Command{
@@ -30,17 +31,20 @@ var walletListCmd = &cobra.Command{
 
 In quiet mode this will return 0 if any wallets are found, otherwise 1.`,
 	Run: func(cmd *cobra.Command, args []string) {
+		assert(viper.GetString("remote") == "", "wallet list not available with remote wallets")
+		assert(viper.GetString("wallet") == "", "wallet list does not take a --wallet parameter")
+
 		walletsFound := false
-		for w := range wallet.Wallets() {
+		for w := range e2wallet.Wallets() {
 			walletsFound = true
 			outputIf(!quiet && !verbose, w.Name())
-			outputIf(verbose, fmt.Sprintf("%s\n\tUUID:\t\t%s", w.Name(), w.ID().String()))
+			outputIf(verbose, fmt.Sprintf("%s\n UUID: %s", w.Name(), w.ID().String()))
 		}
 
 		if !walletsFound {
-			os.Exit(_exit_failure)
+			os.Exit(_exitFailure)
 		}
-		os.Exit(_exit_success)
+		os.Exit(_exitSuccess)
 	},
 }
 

cmd/walletseed.go

@@ -1,58 +0,0 @@
-// Copyright © 2019 Weald Technology Trading
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package cmd
-
-import (
-	"fmt"
-	"os"
-
-	bip39 "github.com/FactomProject/go-bip39"
-	"github.com/spf13/cobra"
-	types "github.com/wealdtech/go-eth2-wallet-types"
-)
-
-var walletSeedCmd = &cobra.Command{
-	Use:   "seed",
-	Short: "Display the seed of a wallet",
-	Long: `Display the seed for an hierarchical deterministic wallet.  For example:
-
-    ethdo wallet seed --wallet=primary
-
-In quiet mode this will return 0 if the wallet is a hierarchical deterministic wallet, otherwise 1.`,
-	Run: func(cmd *cobra.Command, args []string) {
-		assert(walletWallet != "", "--wallet is required")
-		assert(rootWalletPassphrase != "", "--walletpassphrase is required")
-
-		wallet, err := walletFromPath(walletWallet)
-		errCheck(err, "Failed to access wallet")
-		_, ok := wallet.(types.WalletKeyProvider)
-		assert(ok, fmt.Sprintf("wallets of type %q do not provide keys", wallet.Type()))
-
-		err = wallet.Unlock([]byte(rootWalletPassphrase))
-		errCheck(err, "Failed to unlock wallet")
-		seed, err := wallet.(types.WalletKeyProvider).Key()
-		errCheck(err, "Failed to obtain wallet key")
-		outputIf(debug, fmt.Sprintf("Seed is %#0x", seed))
-		seedStr, err := bip39.NewMnemonic(seed)
-		errCheck(err, "Failed to generate seed mnemonic")
-
-		outputIf(!quiet, seedStr)
-		os.Exit(_exit_success)
-	},
-}
-
-func init() {
-	walletCmd.AddCommand(walletSeedCmd)
-	walletFlags(walletSeedCmd)
-}

docs/howto.md

@@ -0,0 +1,67 @@
+# How to achieve common tasks with ethdo
+
+## Find out what ethdo can do
+
+To find a list of topics that ethdo can carry out with the `ethdo help` command.
+
+If you want more detailed information about the commands in a topic, they can be seen with the `ethdo help <topic>` command, for example:
+
+```sh
+ethdo help wallet
+```
+
+## List my wallets
+
+The wallets you can currently access can be seen with the `ethdo wallet list` command.
+
+## Create a new wallet
+
+New wallets can be created with the `ethdo wallet create` command.  Each wallet has to have a unique name, for example:
+
+```sh
+ethdo wallet create --wallet="My wallet"
+```
+
+Additional options are available to decide the type of wallet and encryption.
+
+## Create an HD wallet from an existing seed
+
+HD wallets can be created from an existing seed by adding the `--seed` parameter to `ethdo wallet create`, for example:
+
+```sh
+ethdo wallet create --wallet="Recreated wallet" --type=hd --seed="tooth moon mad fun romance athlete envelope next mix divert tip top symbol resemble stock family melody desk sheriff drift bargain need jaguar method"
+```
+
+The seed for an existing HD wallet can be obtained with `ethdo wallet seed`.
+
+## Back up a wallet
+
+A wallet can be backed up with the `ethdo wallet export` command.  This creates an encrypted backup of the wallet, for example:
+
+```sh
+ethdo wallet export --wallet="My wallet" --exportpassphrase="export secret" >export.dat
+```
+
+Note that by default the wallet backup is printed to the console, hence the `>export.dat` to redirect it to a file.
+
+## Restore a wallet
+
+A backed up wallet can be restored with the `ethdo wallet import` command, for example:
+
+```sh
+ethdo wallet import --importdata=export.dat --importpassphrase="export secret"
+```
+
+In this example the wallet to be imported is being read from the `export.dat` file.
+
+Note that if a wallet with the same name already exists it cannot be imported.
+
+## Where is my wallet?
+
+Details of the location of a wallet can be found with the `ethdo wallet info` command, for example:
+
+```sh
+ethdo wallet info --verbose --wallet="My wallet"
+```
+
+This will provide, amongst other information, a `Location` line giving the directory where the wallet information resides.

docs/prysm.md

@@ -0,0 +1,232 @@
+# Using ethdo with Prysm
+
+## Installing ethdo
+
+1. To install `ethdo`, use the instructions on the [main page](https://github.com/wealdtech/ethdo).
+
+## Typical validating setups
+
+This section outlines the process of setting up a configuration with two validators and a single withdrawal account using ethdo.
+
+### Generating a wallet
+
+To create a non-deterministic wallet, where keys generated from random data, issue the command:
+```sh
+ethdo wallet create --wallet=Validators
+```
+
+If you prefer to have a hierarchical deterministic wallet, where keys are generated from a seed, issue the command:
+
+```sh
+ethdo wallet create --wallet=Validators --type=hd --walletpassphrase=walletsecret
+```
+
+This creates a wallet called "Validators" in the default wallet directory (see https://github.com/wealdtech/ethdo/#wallets-and-accounts for details) which contains the newly generated seed data.
+
+> The `--walletpassphrase` flag and input is required to protect the seed. It is critical that you keep it private and secure.
+
+ Once the wallet is created, fetch its data to ensure it exists by issuing the following command:
+
+```sh
+ethdo wallet info --wallet=Validators
+```
+
+This command will produce output like so:
+
+```sh
+Type: non-deterministic
+Accounts: 0
+```
+
+### Generating accounts
+
+To create two separate accounts with different passphrases, issue the command:
+```sh
+ethdo account create --account=Validators/1 --passphrase=validator1secret
+ethdo account create --account=Validators/2 --passphrase=validator2secret
+```
+
+ > The two accounts are given different passphrases in the above example.  This is not required; all accounts can have the same password if you prefer.
+
+### Creating a withdrawal wallet and account
+
+It is recommended to set up separate wallets for withdrawals and validator nodes. This allows users to have a validator wallet actively running on the node, while a second wallet can be kept securely offline in cold storage.
+
+Creating a withdrawal wallet and account is very similar to the process above to generate the validator wallet.  For example:
+
+```sh
+ethdo wallet create --wallet=Withdrawal
+ethdo account create --account=Withdrawal/Primary --passphrase=withdrawalsecret
+```
+
+This creates a wallet called "Withdrawal" and within it an account called "Primary". It is also possible to apply additional protection to the Withdrawal wallet if desired; see the `ethdo` documentation for details.
+
+### Depositing funds for a validator
+
+The validator now requires deposited funds. If you do not have any Göerli Ether, the best approach is to follow the steps at https://prylabs.net/participate to use the faucet and make a deposit -- **however**, for step 3, do not run the commands provided.  Instead, run the following command to generate the deposit data requested:
+
+```sh
+ethdo validator depositdata \
+      --validatoraccount=Validators/1 \
+      --withdrawalaccount=Withdrawal/Primary \
+      --depositvalue=32Ether \
+      --passphrase=validator1secret \
+      --raw
+```
+
+The raw data output of this command can be pasted in to the webpage above to generate the required transaction for validator 1 (and can be repeated for validator 2, or as many validators as you wish).
+
+Alternatively, if you have your own Göerli ETH, you can send deposit transactions directly to the Göerli testnet.  You can create JSON output containing the deposit data:
+
+```sh
+ethdo validator depositdata \
+      --validatoraccount=Validators/1 \
+      --withdrawalaccount=Withdrawal/Primary \
+      --depositvalue=32Ether \
+      --passphrase=validator1secret
+{"account":"Validators/1","pubkey":"a9ca9cf7fa2d0ab1d5d52d2d8f79f68c50c5296bfce81546c254df68eaac0418717b2f9fc6655cbbddb145daeb282c00","withdrawal_credentials":"0059a28dc2db987d59bdfc4ab20b9ad4c83888bcd32456a629aece07de6895aa","signature":"9335b872253fdab328678bd3636115681d52b42fe826c6acb7f1cd1327c6bba48e3231d054e4f274cc7c1c184f28263b13083e01db8c08c17b59f22277dff341f7c96e7a0407a0a31c8563bcf479d31136c833712ae3bfd93ee9ea6abdfa52d4","value":3200000000,"deposit_data_root":"14278c9345eeeb7b2d5307a36ed1c72eea5ed09a30cf7c47525e34f39f564ef5"}
+```
+
+This can be passed to [ethereal](https://github.com/wealdtech/ethereal) to send the deposit (replacing `0x21A1A52aba41DB18F9F1D2625e1b19A251F3e0A9` below with your local Göerli account containing the funds and `eth1secret` with that account's passphrase; `ethereal --network=goerli account list --verbose` will provide details of your local accounts and their current funds).
+
+on Linux/OSX:
+
+```sh
+DEPOSITDATA=`ethdo validator depositdata \
+                   --validatoraccount=Validators/1 \
+                   --withdrawalaccount=Withdrawal/Primary \
+                   --depositvalue=32Ether \
+                   --passphrase=validator1secret`
+ethereal beacon deposit \
+      --network=goerli \
+      --data="${DEPOSITDATA}" \
+      --from=0x21A1A52aba41DB18F9F1D2625e1b19A251F3e0A9 \
+      --passphrase=eth1secret
+```
+
+or on Windows:
+
+```sh
+ethdo validator depositdata \
+      --validatoraccount=Validators/1 \
+      --withdrawalaccount=Withdrawal/Primary \
+      --depositvalue=32Ether \
+      --passphrase=validator1secret >depositdata.json
+ethereal beacon deposit \
+      --network=goerli \
+      --data=depositdata.json \
+      --from=0x21A1A52aba41DB18F9F1D2625e1b19A251F3e0A9 \
+      --passphrase=eth1secret
+erase depositdata.json
+```
+
+The `ethereal` command can either take a `passphrase`, if the `from` address is a local account (confirm with `ethereal --network=goerli account list`) or a `privatekey` if not.
+
+### Validating
+
+The next step is to start the validator using the validating keys that have been created.
+
+#### Keymanager options
+
+Although options for the wallet keymanager can be supplied directly on the command-line this is not considered best practice, as it exposes sensitive information such as passphrases, so it is better to create a file that contains this information and reference that file.
+
+To create the relevant directory run the following for Linux/OSX:
+
+```sh
+mkdir -p ${HOME}/prysm/validator
+```
+
+or for Windows:
+
+```sh
+mkdir  %APPDATA%\prysm\validator
+```
+
+
+and then use your favourite text editor to create a file in this directory called `wallet.json` with the following contents:
+
+```json
+{
+  "accounts": [
+    "Validators/1",
+    "Validators/2"
+  ],
+  "passphrases": [
+    "validator1secret",
+    "validator2secret"
+  ]
+}
+```
+
+#### Starting the validator with Bazel
+
+To start the validator you must supply the desired keymanager and the location of the keymanager options file.   Run the following command for Linux/OSX:
+
+```sh
+bazel run //validator:validator -- --keymanager=wallet --keymanageropts=${HOME}/prysm/validator/wallet.json
+```
+
+or for Windows:
+
+```sh
+bazel run //validator:validator -- --keymanager=wallet --keymanageropts=%APPDATA%\prysm\validator\wallet.json
+```
+
+#### Starting the validator with Docker
+
+Docker will not have direct access to the wallet created above, and requires the keymanager to be informed of the mapped location of the wallet.  Edit the `wallet.json` file to include a location entry, as follows:
+
+```json
+{
+  "location": "/wallets",
+  "accounts": [
+    "Validators/1",
+    "Validators/2"
+  ],
+  "passphrases": [
+    "validator1secret",
+    "validator2secret"
+  ]
+}
+```
+
+Then run the validator by issuing the following command on Linux:
+
+```sh
+ docker run -v "${HOME}/prysm/validator:/data" \
+      -v "${HOME}/.config/ethereum2/wallets:/wallets" \
+      gcr.io/prysmaticlabs/prysm/validator:latest \
+      --keymanager=wallet \
+      --keymanageropts=/data/wallet.json
+```
+
+or for OSX:
+
+```sh
+ docker run -v "${HOME}/prysm/validator:/data" \
+      -v "${HOME}/Library/Application Support/ethereum2/wallets:/wallets" \
+      gcr.io/prysmaticlabs/prysm/validator:latest \
+      --keymanager=wallet \
+      --keymanageropts=/data/wallet.json
+```
+
+or for Windows:
+
+```sh
+ docker run -v %APPDATA%\prysm\validator:/data" \
+      -v %APPDATA%\ethereum2\wallets:/wallets" \
+      gcr.io/prysmaticlabs/prysm/validator:latest \
+      --keymanager=wallet \
+      --keymanageropts=/data/wallet.json
+```
+
+#### Confirming validation
+
+When the validator is operational, you should see output similar to:
+
+```text
+[2020-02-07 10:00:59]  INFO node: Validating for public key pubKey=0x85016bd4ca67e57e1438308fdb3d98b74b81428fb09e6d16d2dcbc72f240be090d5faebb63f84d6f35a950fdbb36f910
+[2020-02-07 10:00:59]  INFO node: Validating for public key pubKey=0x8de04b4cd3f0947f4e76fa2f86fa1cfd33cc2500688f2757e406448c36f0f1255758874b46d72002ad206ed560975d39
+```
+
+where each line states a public key that is being used for validating.  Confirm that these values match your expectations.

docs/troubleshooting.md

@@ -0,0 +1,39 @@
+# Troubleshooting
+
+## Compilation problems on Linux
+
+### gcc not found
+### cannot find -lstdc++
+
+If you receive errors of this type your computer is missing some files to allow `ethdo` to build.  To resolve this, run the following command:
+
+```sh
+sudo apt install build-essential libstdc++6
+```
+
+and then try to install `ethdo` again.
+
+## Compilation problems on Windows
+
+### gcc not found
+
+If you receive errors of this type your computer is missing some files to allow `ethdo` to build.  To resolve this install gcc by following the instructions at http://mingw-w64.org/doku.php
+
+## ethdo not found after installing
+
+This is usually due to an incorrectly set path.  Go installs its binaries (such as `ethdo`) in a particular location.  The defaults are:
+
+  - Linux, Mac: `$HOME/go/bin`
+  - Windows: `%USERPROFILE%\go\bin`
+
+You must add these paths to be able to access `ethdo`.  To add the path on linux or OSX type:
+
+```sh
+export PATH=$PATH:$(go env GOPATH)/bin
+```
+
+and on Windows type:
+
+```sh
+setx /M path "%PATH%;%USERPROFILE%\go\bin"
+```

docs/usage.md

@@ -0,0 +1,412 @@
+# ethdo commands
+
+ethdo provides features to manage wallets and accounts, as well as interacting with Ethereum 2 nodes and remote signers.  Below are a list of all available commands.
+
+Note that the below provides a list of commands rather than a howto guide.  Please follow the
+
+### `wallet` commands
+
+#### `accounts`
+
+`ethdo wallet accounts` lists the accounts within a wallet.  
+
+```sh
+$ ethdo wallet accounts --wallet="Personal wallet"
+Auctions
+Operations
+Spending
+```
+
+With the `--verbose` flag this will provide the public key of the accounts.
+
+```sh
+$ ethdo wallet accounts --wallet="Personal wallet" --verbose
+Auctions: 0x812f340269c315c1d882ae7c13cdaddf862dbdbd482b1836798b2070160dd1e194088cc6f39347782028d1e56bd18674
+Operations: 0x8e2f9e8cc29658ff37ecc30e95a0807579b224586c185d128cb7a7490784c1ad9b0ab93dbe604ab075b40079931e6670
+Spending: 0x85dfc6dcee4c9da36f6473ec02fda283d6c920c641fc8e3a76113c5c227d4aeeb100efcfec977b12d20d571907d05650
+```
+#### `create`
+
+`ethdo wallet create` creates a new wallet with the given parameters.  Options for creating a wallet include:
+  - `wallet`: the name of the wallet to create
+  - `type`: the type of wallet to create.  This can be either "nd" for a non-deterministic wallet, where private keys are generated randomly, or "hd" for a hierarchical deterministic wallet, where private keys are generated from a seed and path as per [ERC-2333](https://github.com/CarlBeek/EIPs/blob/bls_path/EIPS/eip-2334.md) (defaults to "nd")
+  - `walletpassphrase`: the passphrase for of the wallet.  This is required for hierarchical deterministic wallets, to protect the seed
+  - `mnemonic`: for hierarchical deterministic wallets only, use a pre-defined 24-word [BIP-39 seed phrase](https://en.bitcoin.it/wiki/Seed_phrase) to create the wallet, along with an additional "seed extension" phrase if required.  **Warning** The same mnemonic can be used to create multiple wallets, in which case they will generate the same keys.
+
+```sh
+$ ethdo wallet create --wallet="Personal wallet" --type="hd" --walletpassphrase="my wallet secret"
+```
+
+#### `delete`
+`ethdo wallet delete` deletes a wallet.  Options for deleting a wallet include:
+  - `wallet`: the name of the wallet to delete
+
+```sh
+$ ethdo wallet delete --wallet="Old wallet"
+```
+
+**Warning** Deleting a wallet is permanent.  Only use this command if you really don't want the wallet, or you have securely backed the wallet up using `wallet export`.
+
+#### `export`
+
+`ethdo wallet export` exports the wallet and all of its accounts.  Options for exporting a wallet include:
+  - `wallet`: the name of the wallet to export (defaults to "primary")
+  - `exportpassphrase`: the passphrase with which to encrypt the wallet backup
+
+```sh
+$ ethdo wallet export --wallet="Personal wallet" --exportpassphrase="my export secret"
+0x01c7a27ad40d45b4ae5be5f...
+```
+
+The encrypted wallet export is written to the console; it can be redirected to store it in a file.
+
+```sh
+$ ethdo wallet export --wallet="Personal wallet" --exportpassphrase="my export secret" >export.dat
+```
+
+#### `import`
+
+`ethdo wallet import` imports a wallet and all of its accounts exported by `ethdo wallet export`.  Options for importing a wallet include:
+  - `importdata`: the data exported by `ethdo wallet export`
+  - `importpassphrase`: the passphrase that was provided to `ethdo wallet export` to encrypt the data
+  - `verify`: confirm information about the wallet import without importing it
+
+```sh
+$ ethdo wallet import --importdata="0x01c7a27ad40d45b4ae5be5f..." --importpassphrase="my export secret"
+```
+
+The encrypted wallet export can be read from a file.  For example with Unix systems:
+
+```sh
+$ ethdo wallet import --importdata=`cat export.dat` --importpassphrase="my export secret"
+```
+
+#### `info`
+
+`ethdo wallet info` provides information about a given wallet.  Options include:
+  - `wallet`: the name of the wallet
+
+```sh
+$ ethdo wallet info --wallet="Personal wallet"
+Type: hierarchical deterministic
+Accounts: 3
+```
+
+#### `list`
+
+`ethdo wallet list` lists all wallets in the store.
+
+```sh
+$ ethdo wallet list
+Personal wallet
+```
+
+**N.B.** encrypted wallets will not show up in this list unless the correct passphrase for the store is supplied.
+
+### `account` commands
+
+Account commands focus on information about local accounts, generally those used by Geth and Parity but also those from hardware devices.
+
+#### `create`
+
+`ethdo account create` creates a new account with the given parameters.  Options for creating an account include:
+  - `account`: the name of the account to create
+  - `passphrase`: the passphrase for the account
+
+Note that for hierarchical deterministic wallets you will also need to supply `--walletpassphrase` to unlock the wallet seed.
+
+```sh
+$ ethdo account create --account="Personal wallet/Operations" --walletpassphrase="my wallet secret" --passphrase="my account secret"
+```
+#### `import`
+
+`ethdo account import` creates a new account by importing its private key.  Options for creating the account include:
+  - `account`: the name of the account to create
+  - `passphrase`: the passphrase for the account
+  - `key`: the private key to import
+
+```sh
+$ ethdo account import --account=Validators/123 --key=6dd12d588d1c05ba40e80880ac7e894aa20babdbf16da52eae26b3f267d68032 --passphrase="my account secret"
+```
+
+#### `info`
+
+`ethdo account info` provides information about the given account.  Options include:
+  - `account`: the name of the account on which to obtain information
+
+```sh
+$ ethdo account info --account="Personal wallet/Operations"
+Public key: 0x8e2f9e8cc29658ff37ecc30e95a0807579b224586c185d128cb7a7490784c1ad9b0ab93dbe604ab075b40079931e6670
+```
+
+#### `key`
+
+`ethdo account key` provides the private key for an account.  Options include:
+  - `account`: the name of the account on which to obtain information
+  - `passphrase`: the passphrase for the account
+
+```sh
+$ ethdo account key --account=interop/00001 --passphrase=secret
+0x51d0b65185db6989ab0b560d6deed19c7ead0e24b9b6372cbecb1f26bdfad000
+```
+
+#### `lock`
+
+`ethdo account lock` manually locks an account on a remote signer.  Locked accounts cannot carry out signing requests.  Options include:
+  - `account`: the name of the account to lock
+
+Note that this command only works with remote signers; it has no effect on local accounts.
+
+```sh
+$ ethdo account lock --account=Validators/123
+```
+
+#### `unlock`
+
+`ethdo account unlock` manually unlocks an account on a remote signer.  Unlocked accounts cannot carry out signing requests.  Options include:
+  - `account`: the name of the account to unlock
+  - `passphrase`: the passphrase for the account
+
+Note that this command only works with remote signers; it has no effect on local accounts.
+
+```sh
+$ ethdo account unlock --account=Validators/123 --passphrase="my secret passphrase"
+```
+
+### `signature` commands
+
+Signature commands focus on generation and verification of data signatures.
+
+#### `signature sign`
+
+`ethdo signature sign` signs provided data.  Options include:
+  - `data`: the data to sign, as a hex string
+  - `domain`: the domain in which to sign the data.  This is a 32-byte hex string
+  - `account`: the account to sign the data
+  - `passphrase`: the passphrase for the account
+
+```sh
+$ ethdo signature sign --data="0x08140077a94642919041503caf5cc1c89c7744a2a08d43cec91df1795b23ecf2" --account="Personal wallet/Operations" --passphrase="my account secret"
+0x87c83b31081744667406a11170c5585a11195621d0d3f796bd9006ac4cb5f61c10bf8c5b3014cd4f792b143a644cae100cb3155e8b00a961287bd9e7a5e18cb3b80930708bc9074d11ff47f1e8b9dd0b633e71bcea725fc3e550fdc259c3d130
+```
+
+#### `signature verify`
+
+`ethdo signature verify` verifies signed data.  Options include:
+  - `data`: the data whose signature to verify, as a hex string
+  - `signature`: the signature to verify, as a hex string
+  - `account`: the account which signed the data (if available as an account)
+  - `signer`: the public key of the account which signed the data (if not available as an account)
+
+```sh
+$ ethdo signature verify --data="0x08140077a94642919041503caf5cc1c89c7744a2a08d43cec91df1795b23ecf2" --signature="0x87c83b31081744667406a11170c5585a11195621d0d3f796bd9006ac4cb5f61c10bf8c5b3014cd4f792b143a644cae100cb3155e8b00a961287bd9e7a5e18cb3b80930708bc9074d11ff47f1e8b9dd0b633e71bcea725fc3e550fdc259c3d130" --account="Personal wallet/Operations"
+Verified
+$ ethdo signature verify --data="0x08140077a94642919041503caf5cc1c89c7744a2a08d43cec91df1795b23ecf2" --signature="0x87c83b31081744667406a11170c5585a11195621d0d3f796bd9006ac4cb5f61c10bf8c5b3014cd4f792b143a644cae100cb3155e8b00a961287bd9e7a5e18cb3b80930708bc9074d11ff47f1e8b9dd0b633e71bcea725fc3e550fdc259c3d130" --account="Personal wallet/Auctions"
+Not verified
+$ ethdo signature verify --data="0x08140077a94642919041503caf5cc1c89c7744a2a08d43cec91df1795b23ecf2" --signature="0x89abe2e544ef3eafe397db036103b1d066ba86497f36ed4ab0264162eadc89c7744a2a08d43cec91df128660e70ecbbe11031b4c2e53682d2b91e67b886429bf8fac9bad8c7b63c5f231cc8d66b1377e06e27138b1ddc64b27c6e593e07ebb4b" --signer="0x8e2f9e8cc29658ff37ecc30e95a0807579b224586c185d128cb7a7490784c1ad9b0ab93dbe604ab075b40079931e6670"
+$ ethdo signature verify --data="0x08140077a94642919041503caf5cc1c89c7744a2a08d43cec91df1795b23ecf2" --signature="0x87c83b31081744667406a11170c5585a11195621d0d3f796bd9006ac4cb5f61c10bf8c5b3014cd4f792b143a644cae100cb3155e8b00a961287bd9e7a5e18cb3b80930708bc9074d11ff47f1e8b9dd0b633e71bcea725fc3e550fdc259c3d130" --signer="0xad1868210a0cff7aff22633c003c503d4c199c8dcca13bba5b3232fc784d39d3855936e94ce184c3ce27bf15d4347695"
+Verified
+```
+
+The same rules apply to `ethereal signature verify` as those in `ethereal signature sign` above.
+
+### `version`
+
+`ethdo version` provides the current version of ethdo.  For example:
+
+```sh
+$ ethdo version
+1.4.0
+```
+
+### `block` commands
+
+Block commands focus on providing information about Ethereum 2 blocks.
+#### `info`
+
+`ethdo block info` obtains information about a block in Ethereum 2.  Options include:
+  - `slot`: the slot at which to attempt to fetch the block
+
+```sh
+$ ethdo block info --slot=80 
+Attestations: 1
+Attester slashings: 0
+Deposits: 0
+Voluntary exits: 0
+```
+
+Additional information is supplied when using `--verbose`
+
+```sh
+$ ethdo block info --slot=80 --verbose
+Parent root: 0x9a08aab7d5bbc816a9d2c20c79895519da2045e99ac6782ab3d05323a395fe51
+State root: 0xc6a2626ba5cb37f984bdc4da4dc93a5012be5b69fdcebc50be70a1181a290265
+Ethereum 1 deposit count: 512
+Ethereum 1 deposit root: 0x05b88acdde2092e1ecf35714dca0ccf82fb7e73180643f51d3139553136d125f
+Ethereum 1 block hash: 0x2b8d87e016376d83b2c04c1e626172a3f8bef3b4a37d7f2f3f76d0c62acdf573
+Attestations: 1
+	0:
+		Committee index: 0
+		Attesters: 17
+		Aggregation bits: ✓✓✓✓✓✓✓✓ ✓✓✓✓✓✓✓✓ ✕✕✕✕✕✕✕✓
+		Slot: 79
+		Beacon block root: 0x9a08aab7d5bbc816a9d2c20c79895519da2045e99ac6782ab3d05323a395fe51
+		Source epoch: 0
+		Source root: 0x0000000000000000000000000000000000000000000000000000000000000000
+		Target epoch: 2
+		Target root: 0xb93273c516fc817e64fab53ff4093f295e5da463582e85e1ca60800e9464faf2
+Attester slashings: 0
+Deposits: 0
+Voluntary exits: 0
+```
+
+### `chain` commands
+
+Chain commands focus on providing information about Ethereum 2 chains.
+
+#### `info`
+
+`ethdo chain info` obtains information about an Ethereum 2 chain.
+
+```sh
+$ ethdo chain info
+Genesis time:		Thu Apr 16 08:02:43 BST 2020
+```
+
+Additional information is supplied when using `--verbose`
+
+```sh
+$ ethdo chain info --verbose
+Genesis time:		Thu Apr 16 08:02:43 BST 2020
+Genesis fork version:	00000000
+Seconds per slot:	12
+Slots per epoch:	32
+```
+
+#### `status`
+
+`ethdo chain status` obtains the status of an Ethereum 2 chain from the node's point of view.  Options include:
+  - `slot` show output in terms of slots rather than epochs
+
+```sh
+$ ethdo chain status
+Current epoch: 5
+Justified epoch: 4
+Finalized epoch: 3
+```
+
+Additional information is supplied when using `--verbose`
+
+```sh
+$ ethdo chain status --verbose
+Current epoch: 5
+Justified epoch: 4
+Justified epoch distance 1
+Finalized epoch: 3
+Finalized epoch distance: 2
+Prior justified epoch: 3
+Prior justified epoch distance: 4
+```
+
+### `node` commands
+
+Node commands focus on information from an Ethereum 2 node.
+
+#### `info`
+
+`ethdo node info` obtains the information about an Ethereum 2 node.
+
+```sh
+$ ethdo node info
+Syncing: false
+Current slot: 178
+Current epoch: 5
+```
+
+Additional information is supplied when using `--verbose`
+
+```sh
+$ ethdo node info --verbose
+Version: Prysm/Git commit: b0aa6e22455e4d9cb8720a259771fbbbd22dc3ec. Built at: 2020-04-16T08:02:43+01:00
+Syncing: false
+Current slot: 178
+Current epoch: 5
+Genesis timestamp: 1587020563
+```
+### `validator` commands
+
+Validator commands focus on interaction with Ethereum 2 validators.
+
+#### `depositdata`
+
+`ethdo validator depositdata` generates the data required to deposit one or more Ethereum 2 validators.  Options include:
+  - `withdrawalaccount` specify the account to be used for the withdrawal credentials (if withdrawalpubkey is not supplied)
+  - `withdrawalpubkey` specify the public key to be used for the withdrawal credentials (if withdrawalaccount is not supplied)
+  - `validatoraccount` specify the account to be used for the validator
+  - `depositvalue` specify the amount of the deposit
+  - `forkversion` specify the fork version for the deposit signature; this should not be included unless the deposit is being generated offline.  Note that supplying an incorrect value could result in the loss of your deposit, so only supply this value if you are sure you know what you are doing
+  - `raw` generate raw hex output that can be supplied as the data to an Ethereum 1 deposit transaction
+
+#### `exit`
+
+`ethdo validator exit` sends a transaction to the chain to tell an active validator to exit the validation queue.  Options include:
+  - `epoch` specify an epoch before which this exit is not valid
+  - `json-output` generate JSON output rather than sending a transaction immediately
+  - `json` use JSON input created by the `--json-output` option rather than generate data from scratch
+  - `forkversion` specify a specific fork version; default is to fetch it from the chain but this can be used when generating offline deposits
+
+```sh
+$ ethdo validator exit --account=Validators/1 --passphrase="my validator secret"
+```
+
+To send a transaction when the account is not accessible to ethdo accout you can use the validator's private key instead:
+
+```sh
+$ ethdo validator exit --key=0x01e748d098d3bcb477d636f19d510399ae18205fadf9814ee67052f88c1f88c0
+```
+
+#### `info`
+
+`ethdo validator info` provides information for a given validator.
+
+```sh
+$ ethdo validator info --account=Validators/1
+Status:            Active
+Balance:           3.203823585 Ether
+Effective balance: 3.1 Ether
+```
+
+Additional information is supplied when using `--verbose`
+
+```sh
+$ ethdo validator info --account=Validators/1 --verbose
+Epoch of data:          3398
+Index:                  26913
+Public key:             0xb3bb6b7a8d809e59544472853d219499765bf01d14de1e0549bd6fc2a86627ac9033264c84cd503b6339e3334726562f
+Status:                 Active
+Balance:                3.204026813 Ether
+Effective balance:      3.1 Ether
+Withdrawal credentials: 0x0033ef3cb10b36d0771ffe8a02bc5bfc7e64ea2f398ce77e25bb78989edbee36
+```
+
+If the validator is not an account it can be queried directly with `--pubkey`.
+
+```sh
+$ ethdo validator info --pubkey=0x842dd66cfeaeff4397fc7c94f7350d2131ca0c4ad14ff727963be9a1edb4526604970df6010c3da6474a9820fa81642b
+Status:            Active
+Balance:           3.201850307 Ether
+Effective balance: 3.1 Ether
+```
+
+## Maintainers
+
+Jim McDonald: [@mcdee](https://github.com/mcdee).
+
+## Contribute
+
+Contributions welcome. Please check out [the issues](https://github.com/wealdtech/ethdo/issues).
+
+## License
+
+[Apache-2.0](LICENSE) © 2019, 2020 Weald Technology Trading Ltd
+

go.mod

@@ -3,32 +3,46 @@ module github.com/wealdtech/ethdo
 go 1.13
 
 require (
-	github.com/FactomProject/go-bip39 v0.3.5
-	github.com/dgraph-io/ristretto v0.0.1 // indirect
+	github.com/OneOfOne/xxhash v1.2.5 // indirect
+	github.com/aws/aws-sdk-go v1.33.11 // indirect
+	github.com/fsnotify/fsnotify v1.4.9 // indirect
+	github.com/gogo/protobuf v1.3.1
 	github.com/google/uuid v1.1.1
-	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
-	github.com/minio/highwayhash v1.0.0 // indirect
-	github.com/minio/sha256-simd v0.1.1 // indirect
+	github.com/grpc-ecosystem/grpc-gateway v1.14.6 // indirect
+	github.com/herumi/bls-eth-go-binary v0.0.0-20200722032157-41fc56eba7b4
 	github.com/mitchellh/go-homedir v1.1.0
-	github.com/pelletier/go-toml v1.6.0 // indirect
-	github.com/protolambda/zssz v0.1.4 // indirect
-	github.com/prysmaticlabs/go-bitfield v0.0.0-20191017011753-53b773adde52 // indirect
-	github.com/prysmaticlabs/go-ssz v0.0.0-20200101200214-e24db4d9e963
-	github.com/sirupsen/logrus v1.4.2
-	github.com/spf13/afero v1.2.2 // indirect
+	github.com/mitchellh/mapstructure v1.3.3 // indirect
+	github.com/pelletier/go-toml v1.8.0 // indirect
+	github.com/pkg/errors v0.9.1
+	github.com/prysmaticlabs/ethereumapis v0.0.0-20200709024211-e8095222f77b
+	github.com/prysmaticlabs/go-bitfield v0.0.0-20200618145306-2ae0807bef65
+	github.com/prysmaticlabs/go-ssz v0.0.0-20200612203617-6d5c9aa213ae
+	github.com/spaolacci/murmur3 v1.1.0 // indirect
+	github.com/spf13/afero v1.3.2 // indirect
 	github.com/spf13/cast v1.3.1 // indirect
-	github.com/spf13/cobra v0.0.5
+	github.com/spf13/cobra v1.0.0
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
-	github.com/spf13/pflag v1.0.5 // indirect
-	github.com/spf13/viper v1.6.1
-	github.com/wealdtech/go-bytesutil v1.1.0
-	github.com/wealdtech/go-eth2-types v1.0.0
-	github.com/wealdtech/go-eth2-util v1.1.0
-	github.com/wealdtech/go-eth2-wallet v1.8.0
-	github.com/wealdtech/go-eth2-wallet-types v1.8.0
+	github.com/spf13/pflag v1.0.5
+	github.com/spf13/viper v1.7.0
+	github.com/tyler-smith/go-bip39 v1.0.2
+	github.com/wealdtech/eth2-signer-api v1.5.2
+	github.com/wealdtech/go-bytesutil v1.1.1
+	github.com/wealdtech/go-ecodec v1.1.0
+	github.com/wealdtech/go-eth2-types/v2 v2.5.0
+	github.com/wealdtech/go-eth2-util v1.5.0
+	github.com/wealdtech/go-eth2-wallet v1.12.0
+	github.com/wealdtech/go-eth2-wallet-dirk v1.0.1
+	github.com/wealdtech/go-eth2-wallet-distributed v1.1.0
+	github.com/wealdtech/go-eth2-wallet-encryptor-keystorev4 v1.1.0
+	github.com/wealdtech/go-eth2-wallet-hd/v2 v2.3.0
+	github.com/wealdtech/go-eth2-wallet-nd/v2 v2.3.0
+	github.com/wealdtech/go-eth2-wallet-store-filesystem v1.16.1
+	github.com/wealdtech/go-eth2-wallet-store-s3 v1.8.0
+	github.com/wealdtech/go-eth2-wallet-types/v2 v2.6.0
 	github.com/wealdtech/go-string2eth v1.1.0
-	golang.org/x/net v0.0.0-20190628185345-da137c7871d7 // indirect
-	golang.org/x/text v0.3.2 // indirect
-	gopkg.in/ini.v1 v1.51.1 // indirect
-	gopkg.in/yaml.v2 v2.2.7 // indirect
+	golang.org/x/sys v0.0.0-20200722175500-76b94024e4b6 // indirect
+	golang.org/x/text v0.3.3 // indirect
+	google.golang.org/genproto v0.0.0-20200722002428-88e341933a54 // indirect
+	google.golang.org/grpc v1.30.0
+	gopkg.in/ini.v1 v1.57.0 // indirect
 )

go.sum

@@ -1,88 +1,183 @@
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+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
+rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=

grpc/beaconchain.go

@@ -0,0 +1,315 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package grpc
+
+import (
+	"context"
+	"strconv"
+	"strings"
+
+	"github.com/gogo/protobuf/types"
+	"github.com/pkg/errors"
+	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
+	"github.com/spf13/viper"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
+	"google.golang.org/grpc"
+)
+
+// FetchChainConfig fetches the chain configuration from the beacon node.
+// It tweaks the output to make it easier to work with by setting appropriate
+// types.
+func FetchChainConfig(conn *grpc.ClientConn) (map[string]interface{}, error) {
+	if conn == nil {
+		return nil, errors.New("no connection to beacon node")
+	}
+	beaconClient := ethpb.NewBeaconChainClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+	config, err := beaconClient.GetBeaconConfig(ctx, &types.Empty{})
+	if err != nil {
+		return nil, err
+	}
+	results := make(map[string]interface{})
+	for k, v := range config.Config {
+		// Handle integers
+		if v == "0" {
+			results[k] = uint64(0)
+			continue
+		}
+		intVal, err := strconv.ParseUint(v, 10, 64)
+		if err == nil && intVal != 0 {
+			results[k] = intVal
+			continue
+		}
+
+		// Handle byte arrays
+		if strings.HasPrefix(v, "[") {
+			vals := strings.Split(v[1:len(v)-1], " ")
+			res := make([]byte, len(vals))
+			for i, val := range vals {
+				intVal, err := strconv.Atoi(val)
+				if err != nil {
+					return nil, errors.Wrapf(err, "failed to convert value %q for %s", v, k)
+				}
+				res[i] = byte(intVal)
+			}
+			results[k] = res
+			continue
+		}
+
+		// String (or unhandled format)
+		results[k] = v
+	}
+	return results, nil
+}
+
+func FetchLatestFilledSlot(conn *grpc.ClientConn) (uint64, error) {
+	if conn == nil {
+		return 0, errors.New("no connection to beacon node")
+	}
+	beaconClient := ethpb.NewBeaconChainClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+
+	chainHead, err := beaconClient.GetChainHead(ctx, &types.Empty{})
+	if err != nil {
+		return 0, errors.Wrap(err, "failed to obtain latest")
+	}
+
+	return chainHead.HeadSlot, nil
+}
+
+// FetchValidatorCommittees fetches the validator committees for a given epoch.
+func FetchValidatorCommittees(conn *grpc.ClientConn, epoch uint64) (map[uint64][][]uint64, error) {
+	if conn == nil {
+		return nil, errors.New("no connection to beacon node")
+	}
+	beaconClient := ethpb.NewBeaconChainClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+
+	req := &ethpb.ListCommitteesRequest{
+		QueryFilter: &ethpb.ListCommitteesRequest_Epoch{
+			Epoch: epoch,
+		},
+	}
+	resp, err := beaconClient.ListBeaconCommittees(ctx, req)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to obtain committees")
+	}
+
+	res := make(map[uint64][][]uint64)
+	for slot, committees := range resp.Committees {
+		res[slot] = make([][]uint64, len(resp.Committees))
+		for i, committee := range committees.Committees {
+			res[slot][uint64(i)] = make([]uint64, len(committee.ValidatorIndices))
+			indices := make([]uint64, len(committee.ValidatorIndices))
+			copy(indices, committee.ValidatorIndices)
+			res[slot][uint64(i)] = indices
+		}
+	}
+
+	return res, nil
+}
+
+// FetchValidator fetches the validator definition from the beacon node.
+func FetchValidator(conn *grpc.ClientConn, account e2wtypes.Account) (*ethpb.Validator, error) {
+	if conn == nil {
+		return nil, errors.New("no connection to beacon node")
+	}
+	beaconClient := ethpb.NewBeaconChainClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+
+	var pubKey []byte
+	if pubKeyProvider, ok := account.(e2wtypes.AccountCompositePublicKeyProvider); ok {
+		pubKey = pubKeyProvider.CompositePublicKey().Marshal()
+	} else if pubKeyProvider, ok := account.(e2wtypes.AccountPublicKeyProvider); ok {
+		pubKey = pubKeyProvider.PublicKey().Marshal()
+	} else {
+		return nil, errors.New("Unable to obtain public key")
+	}
+
+	req := &ethpb.GetValidatorRequest{
+		QueryFilter: &ethpb.GetValidatorRequest_PublicKey{
+			PublicKey: pubKey,
+		},
+	}
+	return beaconClient.GetValidator(ctx, req)
+}
+
+// FetchValidatorByIndex fetches the validator definition from the beacon node.
+func FetchValidatorByIndex(conn *grpc.ClientConn, index uint64) (*ethpb.Validator, error) {
+	if conn == nil {
+		return nil, errors.New("no connection to beacon node")
+	}
+	beaconClient := ethpb.NewBeaconChainClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+
+	req := &ethpb.GetValidatorRequest{
+		QueryFilter: &ethpb.GetValidatorRequest_Index{
+			Index: index,
+		},
+	}
+	return beaconClient.GetValidator(ctx, req)
+}
+
+// FetchValidatorBalance fetches the validator balance from the beacon node.
+func FetchValidatorBalance(conn *grpc.ClientConn, account e2wtypes.Account) (uint64, error) {
+	if conn == nil {
+		return 0, errors.New("no connection to beacon node")
+	}
+	beaconClient := ethpb.NewBeaconChainClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+
+	var pubKey []byte
+	if pubKeyProvider, ok := account.(e2wtypes.AccountCompositePublicKeyProvider); ok {
+		pubKey = pubKeyProvider.CompositePublicKey().Marshal()
+	} else if pubKeyProvider, ok := account.(e2wtypes.AccountPublicKeyProvider); ok {
+		pubKey = pubKeyProvider.PublicKey().Marshal()
+	} else {
+		return 0, errors.New("Unable to obtain public key")
+	}
+
+	res, err := beaconClient.ListValidatorBalances(ctx, &ethpb.ListValidatorBalancesRequest{
+		PublicKeys: [][]byte{pubKey},
+	})
+	if err != nil {
+		return 0, err
+	}
+	if len(res.Balances) == 0 {
+		return 0, errors.New("unknown validator")
+	}
+	return res.Balances[0].Balance, nil
+}
+
+// FetchValidatorPerformance fetches the validator performance from the beacon node.
+func FetchValidatorPerformance(conn *grpc.ClientConn, account e2wtypes.Account) (bool, bool, bool, uint64, int64, error) {
+	if conn == nil {
+		return false, false, false, 0, 0, errors.New("no connection to beacon node")
+	}
+	beaconClient := ethpb.NewBeaconChainClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+
+	var pubKey []byte
+	if pubKeyProvider, ok := account.(e2wtypes.AccountCompositePublicKeyProvider); ok {
+		pubKey = pubKeyProvider.CompositePublicKey().Marshal()
+	} else if pubKeyProvider, ok := account.(e2wtypes.AccountPublicKeyProvider); ok {
+		pubKey = pubKeyProvider.PublicKey().Marshal()
+	} else {
+		return false, false, false, 0, 0, errors.New("Unable to obtain public key")
+	}
+
+	req := &ethpb.ValidatorPerformanceRequest{
+		PublicKeys: [][]byte{pubKey},
+	}
+	res, err := beaconClient.GetValidatorPerformance(ctx, req)
+	if err != nil {
+		return false, false, false, 0, 0, err
+	}
+	if len(res.InclusionDistances) == 0 {
+		return false, false, false, 0, 0, errors.New("unknown validator")
+	}
+	return res.CorrectlyVotedHead[0],
+		res.CorrectlyVotedSource[0],
+		res.CorrectlyVotedTarget[0],
+		res.InclusionDistances[0],
+		int64(res.BalancesAfterEpochTransition[0]) - int64(res.BalancesBeforeEpochTransition[0]),
+		err
+}
+
+// FetchValidatorInfo fetches current validator info from the beacon node.
+func FetchValidatorInfo(conn *grpc.ClientConn, account e2wtypes.Account) (*ethpb.ValidatorInfo, error) {
+	if conn == nil {
+		return nil, errors.New("no connection to beacon node")
+	}
+	beaconClient := ethpb.NewBeaconChainClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+
+	stream, err := beaconClient.StreamValidatorsInfo(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to contact beacon node")
+	}
+
+	var pubKey []byte
+	if pubKeyProvider, ok := account.(e2wtypes.AccountCompositePublicKeyProvider); ok {
+		pubKey = pubKeyProvider.CompositePublicKey().Marshal()
+	} else if pubKeyProvider, ok := account.(e2wtypes.AccountPublicKeyProvider); ok {
+		pubKey = pubKeyProvider.PublicKey().Marshal()
+	} else {
+		return nil, errors.New("Unable to obtain public key")
+	}
+
+	changeSet := &ethpb.ValidatorChangeSet{
+		Action:     ethpb.SetAction_SET_VALIDATOR_KEYS,
+		PublicKeys: [][]byte{pubKey},
+	}
+	err = stream.Send(changeSet)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to send validator public key")
+	}
+	return stream.Recv()
+}
+
+// FetchChainInfo fetches current chain info from the beacon node.
+func FetchChainInfo(conn *grpc.ClientConn) (*ethpb.ChainHead, error) {
+	if conn == nil {
+		return nil, errors.New("no connection to beacon node")
+	}
+	beaconClient := ethpb.NewBeaconChainClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+
+	return beaconClient.GetChainHead(ctx, &types.Empty{})
+}
+
+// FetchBlock fetches a block at a given slot from the beacon node.
+func FetchBlock(conn *grpc.ClientConn, slot uint64) (*ethpb.SignedBeaconBlock, error) {
+	if conn == nil {
+		return nil, errors.New("no connection to beacon node")
+	}
+	beaconClient := ethpb.NewBeaconChainClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+
+	req := &ethpb.ListBlocksRequest{
+		QueryFilter: &ethpb.ListBlocksRequest_Slot{Slot: slot},
+	}
+	resp, err := beaconClient.ListBlocks(ctx, req)
+	if err != nil {
+		return nil, err
+	}
+	if len(resp.BlockContainers) == 0 {
+		return nil, nil
+	}
+	return resp.BlockContainers[0].Block, nil
+}
+
+func StreamBlocks(conn *grpc.ClientConn) (ethpb.BeaconChain_StreamBlocksClient, error) {
+	if conn == nil {
+		return nil, errors.New("no connection to beacon node")
+	}
+
+	beaconClient := ethpb.NewBeaconChainClient(conn)
+	stream, err := beaconClient.StreamBlocks(context.Background(), &types.Empty{})
+	if err != nil {
+		return nil, err
+	}
+
+	return stream, nil
+}

grpc/beaconnode.go

@@ -0,0 +1,85 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package grpc
+
+import (
+	"context"
+
+	"github.com/pkg/errors"
+	"github.com/spf13/viper"
+	"google.golang.org/grpc"
+
+	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
+	wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
+)
+
+// FetchValidatorIndex fetches the index of a validator.
+func FetchValidatorIndex(conn *grpc.ClientConn, account wtypes.Account) (uint64, error) {
+	if conn == nil {
+		return 0, errors.New("no connection to beacon node")
+	}
+	validatorClient := ethpb.NewBeaconNodeValidatorClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+
+	var pubKey []byte
+	if pubKeyProvider, ok := account.(wtypes.AccountCompositePublicKeyProvider); ok {
+		pubKey = pubKeyProvider.CompositePublicKey().Marshal()
+	} else if pubKeyProvider, ok := account.(wtypes.AccountPublicKeyProvider); ok {
+		pubKey = pubKeyProvider.PublicKey().Marshal()
+	} else {
+		return 0, errors.New("Unable to obtain public key")
+	}
+
+	// Fetch the account.
+	req := &ethpb.ValidatorIndexRequest{
+		PublicKey: pubKey,
+	}
+	resp, err := validatorClient.ValidatorIndex(ctx, req)
+	if err != nil {
+		return 0, err
+	}
+
+	return resp.Index, nil
+}
+
+// FetchValidatorState fetches the state of a validator.
+func FetchValidatorState(conn *grpc.ClientConn, account wtypes.Account) (ethpb.ValidatorStatus, error) {
+	if conn == nil {
+		return ethpb.ValidatorStatus_UNKNOWN_STATUS, errors.New("no connection to beacon node")
+	}
+	validatorClient := ethpb.NewBeaconNodeValidatorClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+
+	var pubKey []byte
+	if pubKeyProvider, ok := account.(wtypes.AccountCompositePublicKeyProvider); ok {
+		pubKey = pubKeyProvider.CompositePublicKey().Marshal()
+	} else if pubKeyProvider, ok := account.(wtypes.AccountPublicKeyProvider); ok {
+		pubKey = pubKeyProvider.PublicKey().Marshal()
+	} else {
+		return ethpb.ValidatorStatus_UNKNOWN_STATUS, errors.New("Unable to obtain public key")
+	}
+
+	// Fetch the account.
+	req := &ethpb.ValidatorStatusRequest{
+		PublicKey: pubKey,
+	}
+	resp, err := validatorClient.ValidatorStatus(ctx, req)
+	if err != nil {
+		return ethpb.ValidatorStatus_UNKNOWN_STATUS, err
+	}
+
+	return resp.Status, nil
+}

grpc/node.go

@@ -0,0 +1,101 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package grpc
+
+import (
+	"context"
+	"time"
+
+	"github.com/gogo/protobuf/types"
+	"github.com/pkg/errors"
+	"github.com/spf13/viper"
+	"google.golang.org/grpc"
+
+	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
+)
+
+// FetchGenesisTime fetches the genesis time.
+func FetchGenesisTime(conn *grpc.ClientConn) (time.Time, error) {
+	if conn == nil {
+		return time.Now(), errors.New("no connection to beacon node")
+	}
+	client := ethpb.NewNodeClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+	res, err := client.GetGenesis(ctx, &types.Empty{})
+	if err != nil {
+		return time.Now(), err
+	}
+	return time.Unix(res.GetGenesisTime().Seconds, 0), nil
+}
+
+// FetchGenesisValidatorsRoot fetches the genesis validators root.
+func FetchGenesisValidatorsRoot(conn *grpc.ClientConn) ([]byte, error) {
+	if conn == nil {
+		return nil, errors.New("no connection to beacon node")
+	}
+	client := ethpb.NewNodeClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+	res, err := client.GetGenesis(ctx, &types.Empty{})
+	if err != nil {
+		return nil, err
+	}
+	return res.GetGenesisValidatorsRoot(), nil
+}
+
+// FetchDepositContractAddress fetches the address of the deposit contract.
+func FetchDepositContractAddress(conn *grpc.ClientConn) ([]byte, error) {
+	if conn == nil {
+		return nil, errors.New("no connection to beacon node")
+	}
+	client := ethpb.NewNodeClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+	res, err := client.GetGenesis(ctx, &types.Empty{})
+	if err != nil {
+		return nil, err
+	}
+	return res.DepositContractAddress, nil
+}
+
+// FetchVersion fetches the version and metadata from the server.
+func FetchVersion(conn *grpc.ClientConn) (string, string, error) {
+	if conn == nil {
+		return "", "", errors.New("no connection to beacon node")
+	}
+	client := ethpb.NewNodeClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+	version, err := client.GetVersion(ctx, &types.Empty{})
+	if err != nil {
+		return "", "", err
+	}
+	return version.Version, version.Metadata, nil
+}
+
+// FetchSyncing returns true if the node is syncing, otherwise false.
+func FetchSyncing(conn *grpc.ClientConn) (bool, error) {
+	if conn == nil {
+		return false, errors.New("no connection to beacon node")
+	}
+	client := ethpb.NewNodeClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
+	defer cancel()
+	syncStatus, err := client.GetSyncStatus(ctx, &types.Empty{})
+	if err != nil {
+		return false, err
+	}
+	return syncStatus.Syncing, nil
+}

util/bls.go

@@ -0,0 +1,31 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package util
+
+import (
+	"encoding/binary"
+
+	"github.com/herumi/bls-eth-go-binary/bls"
+)
+
+// BLSID turns a uint64 in to a BLS identifier.
+func BLSID(id uint64) *bls.ID {
+	var res bls.ID
+	buf := [8]byte{}
+	binary.LittleEndian.PutUint64(buf[:], id)
+	if err := res.SetLittleEndian(buf[:]); err != nil {
+		panic(err)
+	}
+	return &res
+}

util/scratchaccount.go

@@ -0,0 +1,100 @@
+// Copyright © 2020 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package util
+
+import (
+	"errors"
+
+	"github.com/google/uuid"
+	types "github.com/wealdtech/go-eth2-types/v2"
+)
+
+// ScratchAccount is an account that exists temporarily.
+type ScratchAccount struct {
+	id       uuid.UUID
+	privKey  types.PrivateKey
+	pubKey   types.PublicKey
+	unlocked bool
+}
+
+// NewScratchAccount creates a new local account.
+func NewScratchAccount(privKey []byte, pubKey []byte) (*ScratchAccount, error) {
+	if len(privKey) > 0 {
+		return newScratchAccountFromPrivKey(privKey)
+	} else {
+		return newScratchAccountFromPubKey(pubKey)
+	}
+}
+
+func newScratchAccountFromPrivKey(privKey []byte) (*ScratchAccount, error) {
+	key, err := types.BLSPrivateKeyFromBytes(privKey)
+	if err != nil {
+		return nil, err
+	}
+	return &ScratchAccount{
+		id:      uuid.New(),
+		privKey: key,
+		pubKey:  key.PublicKey(),
+	}, nil
+}
+
+func newScratchAccountFromPubKey(pubKey []byte) (*ScratchAccount, error) {
+	key, err := types.BLSPublicKeyFromBytes(pubKey)
+	if err != nil {
+		return nil, err
+	}
+	return &ScratchAccount{
+		id:     uuid.New(),
+		pubKey: key,
+	}, nil
+}
+
+func (a *ScratchAccount) ID() uuid.UUID {
+	return a.id
+}
+
+func (a *ScratchAccount) Name() string {
+	return "scratch"
+}
+
+func (a *ScratchAccount) PublicKey() types.PublicKey {
+	return a.pubKey
+}
+
+func (a *ScratchAccount) Path() string {
+	return ""
+}
+
+func (a *ScratchAccount) Lock() {
+	a.unlocked = false
+}
+
+func (a *ScratchAccount) Unlock([]byte) error {
+	a.unlocked = true
+	return nil
+}
+
+func (a *ScratchAccount) IsUnlocked() bool {
+	return a.unlocked
+}
+
+func (a *ScratchAccount) Sign(data []byte) (types.Signature, error) {
+	if !a.IsUnlocked() {
+		return nil, errors.New("locked")
+	}
+	if a.privKey == nil {
+		return nil, errors.New("no private key")
+	}
+	return a.privKey.Sign(data), nil
+}