57 lines
1.6 KiB
Solidity
57 lines
1.6 KiB
Solidity
/*
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Copyright 2018 ZeroEx Intl.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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pragma solidity ^0.5.5;
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import "../src/interfaces/IValidator.sol";
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contract Validator is
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IValidator
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{
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// The single valid signer for this wallet.
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// solhint-disable-next-line var-name-mixedcase
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address internal VALID_SIGNER;
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/// @dev constructs a new `Validator` with a single valid signer.
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/// @param validSigner The sole, valid signer.
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constructor (address validSigner) public {
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VALID_SIGNER = validSigner;
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}
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/// @dev Verifies that a signature is valid. `signer` must match `VALID_SIGNER`.
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/// @param hash Message hash that is signed.
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/// @param signerAddress Address that should have signed the given hash.
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/// @param signature Proof of signing.
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/// @return Validity of signature.
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// solhint-disable no-unused-vars
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function isValidSignature(
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bytes32 hash,
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address signerAddress,
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bytes calldata signature
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)
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external
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view
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returns (bool isValid)
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{
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return (signerAddress == VALID_SIGNER);
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}
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// solhint-enable no-unused-vars
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}
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