function guess (uint256 _key) public { bytes32 time1 = bytes32(block.timestamp); bytes32 entropy1 = keccak256(abi.encodePacked(time1)); bytes32 time2 = bytes32(block.timestamp); bytes32 entropy2 = keccak256(abi.encodePacked(time2)); bytes32 target = ((entropy1 ^ entropy2) & keccak256(abi.encodePacked(block.number))) & sault; complete = (target == bytes32(_key)); }
0.4.18