ECDSA256

Overview

License: MIT

library ECDSA256

Cryptography module

This library provides functionality for ECDSA verification over any 256-bit curve.

For more information, please refer to the OpenZeppelin documentation.

Errors info

LengthIsNot64

error LengthIsNot64()

Functions info

verify

function verify(
    EC256.Curve memory ec,
    bytes32 hashedMessage_,
    bytes memory signature_,
    bytes memory pubKey_
) internal view returns (bool)

The function to verify the ECDSA signature

Parameters:

Name	Type	Description
ec	struct EC256.Curve	the 256-bit curve parameters.
hashedMessage_	bytes32	the already hashed message to be verified.
signature_	bytes	the ECDSA signature. Equals to bytes(r) + bytes(s).
pubKey_	bytes	the full public key of a signer. Equals to bytes(x) + bytes(y). Note that signatures only from the lower part of the curve are accepted. If your s > n / 2, change it to s = n - s.