We proudly present the TotpAuthenticator. One step closer to zero trust and one step away from web2. You can now use 2FA authentication for your business contacts your web-applications or even your IOTs without a centralized database storing your keys and authenticating users. The Blocqchain takes over!

Cyborg Run 🏃‍♂️

Yarn, remix and hardhat:

yarn hardhat node

yarn remixed -s . --remix-ide https://remix.ethereum.org

yarn hardhat test

Hashing

How to calculate and submit hash:

convert TOTP (eg. 123456) to bytes/hex with ethers. Padding left!!! Then sha256 it and insert 0x at the start. That's it, now it should match the sha256 on-chain.

123456 as hex: 0x000000000000000000000000000000000000000000000000000000000001e240

123456 to hex to sha256 hash: 0x4a438cf911dc63bd7d53c1be977516e82f4d8f19b950d72d6730d4717709eae1

bytes32 sha256 from hex

Optimism

A blocqchain with free lunch, I mean, free gas! How could we not choose for Optimism?

Contract TotpAuthenticator deployed to Optimism Goerli:

0xfa99801Ec6BeFcbfC1eB2d12dc8255453574b276
#  Deployment transaction hash
0x846528416731ddd42e37b8f2dc9fbac24aaf105ebe23d53707a680fc99d68ce0

Also on Main Goerli bcs Opt Goerli goes not yet get indexed by theGraph:

0x5E9607EE52286732A5E3A0Fc57dF367bCb8adAa5
# Tx hash
0x1462f472eb8cda174a47529f6ea0be6a97965e175be9f7f3709a54844228f24a

It's the same address, ain't that funney 🤔 Update not the same anymore after debugging the contract and redeploying. Curious if the new contract would again give the same pub address on Optimism - nope.

Owner wallet:

0x369551E7c1D29756e18BA4Ed7f85f2E6663e1e8d

Testnet Explorer

Faucets