33 lines
835 B
Solidity
33 lines
835 B
Solidity
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// SPDX-License-Identifier: UNLICENSED
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pragma solidity ^0.8.20;
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import "forge-std/Test.sol";
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contract signTest is Test {
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// private key = 123
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// public key = vm.addr(private key)
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// message = "secret message"
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// message hash = keccak256(message)
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// vm.sign(private key, message hash)
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function testSignature() public {
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uint privateKey = 123;
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address pubKey = vm.addr(privateKey);
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bytes32 messageHash = keccak256("secret message");
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(uint8 v, bytes32 r, bytes32 s) = vm.sign(privateKey, messageHash);
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address signer = ecrecover(messageHash, v, r, s);
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assertEq(pubKey, signer);
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bytes32 invalidMessageHash = keccak256("invalid Message");
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signer = ecrecover(invalidMessageHash, v, r, s);
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assertTrue(signer != pubKey);
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}
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}
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