39 lines
1.3 KiB
Solidity
39 lines
1.3 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.0;
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import "../utils/cryptography/draft-EIP712Upgradeable.sol";
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import "../utils/cryptography/ECDSAUpgradeable.sol";
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import "../proxy/utils/Initializable.sol";
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contract EIP712ExternalUpgradeable is Initializable, EIP712Upgradeable {
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function __EIP712External_init(string memory name, string memory version) internal onlyInitializing {
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__EIP712_init_unchained(name, version);
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__EIP712External_init_unchained(name, version);
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}
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function __EIP712External_init_unchained(string memory, string memory) internal onlyInitializing {}
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function domainSeparator() external view returns (bytes32) {
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return _domainSeparatorV4();
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}
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function verify(
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bytes memory signature,
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address signer,
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address mailTo,
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string memory mailContents
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) 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 = ECDSAUpgradeable.recover(digest, signature);
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require(recoveredSigner == signer);
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}
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function getChainId() external view returns (uint256) {
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return block.chainid;
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}
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uint256[50] private __gap;
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}
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