如何在 solidity 中反转 keccak256

我需要以下代码的帮助，其中给了我一个参数的 keccak256，需要反转它才能找到解决挑战的参数

contract LessonFive is AFoundryCourseChallenge {
    error LessonFive__WrongPassword();

    bytes32 public constant EXPECTED_BYTES = 0xb68fe43f0d1a0d7aef123722670be50268e15365401c442f8806ef83b612976b;


    /*
     * CALL THIS FUNCTION!
     * 
     * Use all the help you can on this one! Google, AI, friends, peeranha, ethereum stack exchange, etc. 
     * 
     * Hint: It's a very common...
     * 
     * @param password - A string that when you keccak256 it will return the `EXPECTED_BYTES`!
     * @param yourTwitterHandle - Your twitter handle. Can be a blank string.
     */
    function solveChallenge(string memory password, string memory yourTwitterHandle) external {
        if (keccak256(abi.encodePacked(password)) == EXPECTED_BYTES) {
            _updateAndRewardSolver(yourTwitterHandle);
        } else {
            revert LessonFive__WrongPassword();
        }
    }
}