I'm working on updating some smart contracts to deploy on the Ethereum blockchain, however the cryptographic primitive for this project are really outdated and I don't know enough about cryptography to update them. Can anyone help me to rewrite the code? The repo is here -> [https://github.com/kCox96/smart-contracts/blob/master/contracts/Secp256k1_noconflict.sol]
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Please don't write your own crypto!
If you just want to verify ecdsa-signatures you can use
ecrecover()a builtin function to verify signatures, or this library https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/cryptography/ECDSA.solIf you really need these curve functions there are some libraries out there (e.g. https://github.com/tdrerup/elliptic-curve-solidity) but they also seem to be not well maintained