用 PHP 加密，用 Javascript 解密（cryptojs）

 <script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/4.1.1/crypto-js.min.js" integrity="sha512-E8QSvWZ0eCLGk4km3hxSsNmGWbLtSCSUcewDQPQWZF6pEU8GlT8a5fF32wOl1i8ftdMhssTrF/OhyGWwonTcXA==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
    <script>
        function encrypt(str) {
  var encoded = "";
  for (i=0; i<str.length;i++) {
    var a = str.charCodeAt(i);
    var b = a ^ 51;    // bitwise XOR with any number, e.g. 123
    encoded = encoded+String.fromCharCode(b);
  return btoa(encoded);
PHP解密
 function decrypt($encoded) {
$encoded =base64_decode($encoded);
  $decoded = "";
  for( $i = 0; $i < strlen($encoded); $i++ ) {
    $b = ord($encoded[$i]);
    $a = $b ^ 51;  // <-- must be same number used to encode the character
    $decoded .= chr($a);
  return $decoded;
KEY -PHP 解密
function decrypt($passphrase, $enc_text)
        $enc_text = json_decode($enc_text, true);
        try {
            $slam_ol = hex2bin($enc_text["slam_ltol"]);
            $iavmol  = hex2bin($enc_text["iavmol"]);
        } catch (Exception $e) {
            return null;
        $ciphertext = base64_decode($enc_text["amtext"]);
        $iterations = 999;
        $key = hash_pbkdf2("sha512", $passphrase, $slam_ol, $iterations, 64);
        $decrypted = openssl_decrypt($ciphertext, 'aes-256-cbc', hex2bin($key), OPENSSL_RAW_DATA, $iavmol);
        return $decrypted;
KEY -javascript 加密
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/4.1.1/crypto-js.min.js" integrity="sha512-E8QSvWZ0eCLGk4km3hxSsNmGWbLtSCSUcewDQPQWZF6pEU8GlT8a5fF32wOl1i8ftdMhssTrF/OhyGWwonTcXA==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
    <script>
        function encrypt(passphrase, plain_text) {
            var slam_ol = CryptoJS.lib.WordArray.random(256);
            var iv = CryptoJS.lib.WordArray.random(16);
            var key = CryptoJS.PBKDF2(passphrase, slam_ol, {
                hasher: CryptoJS.algo.SHA512,
                keySize: 64 / 8,
                iterations: 999
            var encrypted = CryptoJS.AES.encrypt(plain_text, key, {
                iv: iv
            var data = {
                amtext: CryptoJS.enc.Base64.stringify(encrypted.ciphertext),
                slam_ltol: CryptoJS.enc.Hex.stringify(slam_ol),
                iavmol: CryptoJS.enc.Hex.stringify(iv)
            return JSON.stringify(data);