Provide withdrawal credentials as part of account info.

Supply clearer message when validator depositdata cannot reach a beacon
node.

README.md

@@ -5,7 +5,7 @@
 
 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
 

cmd/accountinfo.go

@@ -20,6 +20,7 @@ import (
 
 	"github.com/spf13/cobra"
 	pb "github.com/wealdtech/eth2-signer-api/pb/v1"
+	util "github.com/wealdtech/go-eth2-util"
 )
 
 var accountInfoCmd = &cobra.Command{
@@ -33,6 +34,7 @@ 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")
 
+		var withdrawalCredentials []byte
 		if remote {
 			listerClient := pb.NewListerClient(remoteGRPCConn)
 			listAccountsReq := &pb.ListAccountsRequest{
@@ -44,13 +46,18 @@ In quiet mode this will return 0 if the account exists, otherwise 1.`,
 			errCheck(err, "Failed to access account")
 			assert(resp.State == pb.ResponseState_SUCCEEDED, "No such account")
 			assert(len(resp.Accounts) == 1, "No such account")
-			fmt.Printf("Public key: %#048x\n", resp.Accounts[0].PublicKey)
-
+			fmt.Printf("Public key: %#x\n", resp.Accounts[0].PublicKey)
+			withdrawalCredentials = util.SHA256(resp.Accounts[0].PublicKey)
+			withdrawalCredentials[0] = byte(0) // BLS_WITHDRAWAL_PREFIX
+			outputIf(verbose, fmt.Sprintf("Withdrawal credentials: %#x", withdrawalCredentials))
 		} else {
 			account, err := accountFromPath(rootAccount)
 			errCheck(err, "Failed to access wallet")
 			outputIf(verbose, fmt.Sprintf("UUID: %v", account.ID()))
-			outputIf(!quiet, fmt.Sprintf("Public key: %#048x", account.PublicKey().Marshal()))
+			outputIf(!quiet, fmt.Sprintf("Public key: %#x", account.PublicKey().Marshal()))
+			withdrawalCredentials = util.SHA256(account.PublicKey().Marshal())
+			withdrawalCredentials[0] = byte(0) // BLS_WITHDRAWAL_PREFIX
+			outputIf(verbose, fmt.Sprintf("Withdrawal credentials: %#x", withdrawalCredentials))
 			outputIf(verbose && account.Path() != "", fmt.Sprintf("Path: %s", account.Path()))
 		}
 

cmd/validatordepositdata.go

@@ -112,7 +112,10 @@ In quiet mode this will return 0 if the the data can be generated correctly, oth
 				err := connect()
 				errCheck(err, "Failed to connect to beacon node")
 				config, err := grpc.FetchChainConfig(eth2GRPCConn)
-				errCheck(err, "Failed to obtain chain configuration")
+				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)

cmd/version.go

@@ -30,7 +30,7 @@ var versionCmd = &cobra.Command{
 
     ethdo version.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println("1.4.18")
+		fmt.Println("1.4.19")
 		if viper.GetBool("verbose") {
 			buildInfo, ok := dbg.ReadBuildInfo()
 			if ok {