微信小程序des加密、PHP des解密

var server = require(‘../../utils/server.js‘);
var CryptoJS = require(‘../../utils/tripledes.js‘);
Page({

  /**
   * 页面的初始数据
   */
  data: {
    val: ‘‘
  },
  input(e) {
    var val = e.detail.value;
    this.encrypt(val);
  },
  encrypt(val) {
    var pwd = ‘lib123123‘;  //这里需要传入8个字节以上的密钥
    var iv = ‘123123123‘;
    var encryptData = this.encryptByDESModeCBCUtf8to64(val, pwd, iv);
    console.log(encryptData);
    this.setData({
      encryptData: encryptData
    })
    server.postJSON(‘Index/decrypt‘, { data: encryptData, pwd: pwd, iv: iv }, function (res) {
      console.log(res);
    })
  },
  encryptByDESModeCBCUtf8to64(message, key, iv) {
    var keyHex = CryptoJS.enc.Utf8.parse(key);
    var ivHex = CryptoJS.enc.Utf8.parse(iv);
    var encrypted = CryptoJS.DES.encrypt(message, keyHex, {
      iv: ivHex,
      mode: CryptoJS.mode.CBC,
      padding: CryptoJS.pad.Pkcs7
    })
    return encrypted.ciphertext.toString(CryptoJS.enc.Base64);
  }
})

<view>
  <input style=‘border-bottom:1rpx solid #eaeaea‘ bindblur=‘input‘ placeholder=‘输入内容‘></input>
</view>
<view>{{encryptData}}</view>

public function decrypt(){
        $data=I(‘post.data‘);
        $pwd=I(‘post.pwd‘);
        $iv=I(‘post.iv‘);
        $encrypted = base64_decode($data); //如需转换二进制可改成 bin2hex 转换
        $key = str_pad($pwd,8,‘0‘); //3DES加密将8改为24
        $td = mcrypt_module_open(MCRYPT_DES,‘‘,MCRYPT_MODE_CBC,‘‘);//3DES加密将MCRYPT_DES改为MCRYPT_3DES
        if( $iv == ‘‘ )
        {
            $iv = @mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
        }
        @mcrypt_generic_init($td, $key, $iv);
        $decrypted = mdecrypt_generic($td, $encrypted);
        mcrypt_generic_deinit($td);
        mcrypt_module_close($td);
        $y=$this->pkcs5_unpad($decrypted);
        $this->ajaxReturn($y);
    }
    function pkcs5_unpad($text){
        $pad = ord($text{strlen($text)-1});
        if ($pad > strlen($text)) {
            return false;
        }
        if (strspn($text, chr($pad), strlen($text) - $pad) != $pad){
            return false;
        }
        return substr($text, 0, -1 * $pad);
    }