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October 25, 2021 07:41
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Recover eth account on web3.py signed with signMessage() on ethers.js
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| import web3 | |
| w3 = web3.Web3() | |
| prefix = "\x19Ethereum Signed Message:\n" | |
| message = "Verify your Eth address. zveyIPmNyiaCNRjJ9hsbYqEJPb7gJTgNzm2ybM_F-SQ" | |
| signed = "0x4481dffa200bc4c9cadad4083002585fbe20aebef1916aa7d58e66682860097747df3f7fb608c30ff19adbf52ab4ef2a8eabb553857373b0767d43afd83f09ea1c" | |
| prefix = w3.toBytes(text=prefix) | |
| msg = w3.toBytes(text=message) | |
| sign = w3.toHex(text=signed) | |
| hashmsg = w3.keccak(prefix + w3.toBytes(text=str(len(msg))) + msg) | |
| recover = w3.eth.account.recoverHash(hashmsg, signature=signed) | |
| print(recover) |
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You will call something like
library.getSigner().signMessage(unsigned_message)on the client.libraryand.getSigner()is web3-react specific.