test1.sol

pragma solidity ^0.4.19;


contract Test1 {
    bytes32 originalHash;
    
    constructor() public {
        originalHash = keccak256(abi.encode(123));
    }
    function hash(uint originalValue) public view returns (bool) {
        bytes32 hashResult = keccak256(abi.encode(originalValue));
        if (hashResult == originalHash) return true;
        return false;
    }
}