CheckNSignatures

A library to verify multiple signatures

Using the library

In a contract, you can use the CheckNSignatures library to verify multiple signatures:

import { CheckSignatures } from "checknsignatures/CheckNSignatures.sol";

contract Example {
    using CheckSignatures for bytes32;

   function verify(bytes32 hash, bytes memory signatures) external view returns (bool) {
        // Determine the number of required signatures
        uint256 requiredSignatures = 2;

        // Recover the signers
        address[] memory recoveredSigners = hash.recoverNSignatures(signatures, requiredSignatures);

        // Check if the signers are the expected ones
        // ...
    }
}

Using this repo

To install the dependencies, run:

forge install

To build the project, run:

forge build

To run the tests, run:

forge test

Contributing

For feature or change requests, feel free to open a PR, start a discussion or get in touch with us.

Credits

• Safe and Richard: For the initial implementation in the Safe Smart Account