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17 lines
604 B
Solidity
17 lines
604 B
Solidity
2 years ago
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// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.0;
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import "../utils/cryptography/ECDSA.sol";
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import "../utils/cryptography/EIP712.sol";
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abstract contract EIP712Verifier is EIP712 {
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function verify(bytes memory signature, address signer, address mailTo, string memory mailContents) external view {
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bytes32 digest = _hashTypedDataV4(
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keccak256(abi.encode(keccak256("Mail(address to,string contents)"), mailTo, keccak256(bytes(mailContents))))
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);
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address recoveredSigner = ECDSA.recover(digest, signature);
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require(recoveredSigner == signer);
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}
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}
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