└── SignatureVerifier.sol


/SignatureVerifier.sol:
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 1 | // SPDX-License-Identifier: MIT
 2 | pragma solidity ^0.8.0;
 3 | 
 4 | contract SignatureVerifier {
 5 |     function verifySignature(bytes32 message, bytes memory signature) public pure returns (address) {
 6 |         bytes32 ethSignedMessageHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", message));
 7 |         return recoverSigner(ethSignedMessageHash, signature);
 8 |     }
 9 | 
10 |     function recoverSigner(bytes32 ethSignedMessageHash, bytes memory signature) public pure returns (address) {
11 |         (uint8 v, bytes32 r, bytes32 s) = splitSignature(signature);
12 |         return ecrecover(ethSignedMessageHash, v, r, s);
13 |     }
14 | 
15 |     function splitSignature(bytes memory sig) public pure returns (uint8 v, bytes32 r, bytes32 s) {
16 |         require(sig.length == 65, "Invalid signature length");
17 |         assembly {
18 |             r := mload(add(sig, 32))
19 |             s := mload(add(sig, 64))
20 |             v := byte(0, mload(add(sig, 96)))
21 |         }
22 |     }
23 | }
24 | 


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