crypto加密：后端PHP加密，前端JS解密

前端工作：使用cdn加载：

https://cdnjs.cloudflare.com/ajax/libs/crypto-js/4.1.1/crypto-js.min.js

string 要加密/解密的字符串

code 秘钥字符串

operation 默认false表示加密，传入true表示解密

    // 加密解密方法：string-需要解密的字段  code-约定的密钥    operation 默认false表示加密，传入true表示解密
    function secret(string, code, operation) {
      code = CryptoJS.MD5(code).toString()
      var iv = CryptoJS.enc.Utf8.parse(code.substring(0, 16))
      var key = CryptoJS.enc.Utf8.parse(code.substring(16))
      if (operation) {
        return CryptoJS.AES.decrypt(string, key, {
          iv: iv,
          padding: CryptoJS.pad.Pkcs7
        }).toString(CryptoJS.enc.Utf8)
      }
      return CryptoJS.AES.encrypt(string, key, {
        iv: iv,
        mode: CryptoJS.mode.CBC,
        padding: CryptoJS.pad.Pkcs7
      }).toString()
    }
    var $string = '6sFQ6gfswps0tZG5IRxk';
    var $code = '1234';
    var string = secret($string,$code,true);
    console.log(string);

php

function gptKey($string,$code,$operation=false){
    $code = md5($code);
    $iv = substr($code,0,16);
    $key = substr($code,16);
    if($operation){
        $str = openssl_decrypt(base64_decode($string),"AES-128-CBC",$key,OPENSSL_RAW_DATA,$iv);
    }else{
        $str = base64_encode(openssl_encrypt($string,"AES-128-CBC",$key,OPENSSL_RAW_DATA,$iv));
    }
    return urlencode($str);
}