PHP openssl 与 JS 信息交互

PHP 

private function _decode( $data, $key )
    {
        $iv         = substr( $data, -16 );
        $data       = substr( $data, 0, strlen( $data ) - 16 );

        $string     = '';
        $retlen     = strlen( $data );

        for( $i = 0; $i < $retlen; $i += 2 ) {
            $tmp    = $data[$i];
            if( $data[$i+1] != 'g' )
                $tmp .= $data[$i+1];
            $string     .= chr( hexdec( $tmp ) );
        }
　　　　　
        $ret = openssl_decrypt( $string, 'AES-256-CBC', $key, OPENSSL_RAW_DATA, $iv );//Pkcs7
        if( !$ret ){
            var_dump( openssl_error_string() );
            return false;
        }
        return base64_decode( $ret );
    }

    private function _encode( $string, $key )
    {
        $iv         = substr( str_shuffle( md5( $key ) ), 0, 16 );

        $encrypt    = openssl_encrypt( base64_encode( $string ), 'AES-256-CBC', $key, OPENSSL_RAW_DATA, $iv );
        if( !$encrypt )
            return false;
　　　　　　//字符串转16进制。 36-38要注意下，有些特殊字符转换后只有一个字符，加一个不存在的16进制字符后缀，以区分出来，同时保持格式正确。
        $ret        = '';
        $lenght     = strlen( $encrypt );
        for( $i = 0; $i < $lenght; $i++ ) {
            $tmpHex     = dechex( ord( $encrypt[$i] ) );
            if( strlen( $tmpHex ) != 2 ) {
                $tmpHex .= "g";
            }

            $ret    .= $tmpHex;
        }
        return $ret . $iv;
    }

JS （包：crypto-js【https://www.npmjs.com/package/crypto-js】）

encryption: function (str) {
    var pass = "xxxxx" //与php保持一致，256 -> 32位
    var iv = this.strShuffle(pass).slice(16);
    //console.log(cryptoJs.enc.Base64.stringify( cryptoJs.enc.Utf8.parse(str) ));
    var _waStr = cryptoJs.enc.Utf8.parse(cryptoJs.enc.Base64.stringify(cryptoJs.enc.Utf8.parse(str)) );
    // cryptoJs.pad.Pkcs7.pad(_waStr,8);
    var _waPass = cryptoJs.enc.Utf8.parse( pass );
    var _waIv = cryptoJs.enc.Utf8.parse( iv );
    
    var encrypt = cryptoJs.AES.encrypt(
       _waStr,
      _waPass,
      {
        iv: _waIv,
      }
    ).ciphertext
    // console.log(cryptoJs.enc.Base64.stringify(encrypt));
    console.log("finally == ", encrypt.toString() + iv );
    return encrypt.toString() + iv;
  },
  decryption: function ( str ) {
    var pass = "xxxxxx" 
    var iv = str.slice( -16 );
    var data = str.substr( 0, str.length - 16 );
    //console.log( data);
    var _waData = cryptoJs.enc.Hex.parse(data);
    // cryptoJs.pad.Pkcs7.unpad(_waData, 8);
    var _waIv = cryptoJs.enc.Utf8.parse(iv);
    var _waPass = cryptoJs.enc.Utf8.parse(pass);

    var decrypt = cryptoJs.AES.decrypt(
      cryptoJs.lib.CipherParams.create({ ciphertext: _waData }),
      _waPass,
      {
        iv: _waIv,
      }
    )
    // cryptoJs.pad.Pkcs7.unpad(decrypt, 8);
    console.log("obj = ", cryptoJs.enc.Utf8.stringify(cryptoJs.enc.Base64.parse( cryptoJs.enc.Utf8.stringify( decrypt) ) ));
    return cryptoJs.enc.Utf8.stringify(cryptoJs.enc.Base64.parse(cryptoJs.enc.Utf8.stringify(decrypt)));
    // var test = '{"key":"key","ssid":"ssid"}';
    // console.log("22 = ", cryptoJs.enc.Base64.stringify( cryptoJs.enc.Utf8.parse(test) ) );

    // var test = 'eyJrZXkiOiJrZXkiLCJzc2lkIjoic3NpZCJ9';
    // console.log("22 = ", cryptoJs.enc.Utf8.stringify(cryptoJs.enc.Base64.parse(test)) );
  },
  strShuffle: function (str) {
    return (str.split("").sort(
      function () {
        return Math.random() - 0.5
      }
    )).join("");
  }