BitSigVerifierInEth

Verifying native bit message signature in evm.

notes

Both the ethereum and the bitcoin are base the spec256k1 curve, that means the signature signed by bitcoin wallet can be verified in smart contracts. The format of address and signature are different in bitcoin and ethereum, but they have same private key and publick key. You can convert them by this peoject.

test

1yarn
2yarn hardhat test

install

1yarn add --dev bit-sig-verifier-in-eth

usage

1import { convertToEthSignature, compressedPublicKeyToAddress, verifyBitSignatureWithEthAddress } from 'bit-sig-verifier-in-eth'
2
3async function () {
4    //generate random signer
5    const ethwallet = ethers.Wallet.createRandom()
6    const bitkey = new PrivateKey(ethwallet.privateKey.substring(2))
7        
8    const address = compressedPublicKeyToAddress(bitkey.toPublicKey().toBuffer().toString('hex'))
9    expect(address).to.equal(await ethwallet.getAddress())
10}
11