javascript - aes128加密一些相关问题

class aes {

const KEY = "625202f9149e061d";
const IV = "5efd3f6060e20330";

/**

1. function addPkcs7Padding($string, $blocksize = 32) {

      $len = strlen($string); //取得字符串长度
      $pad = $blocksize - ($len % $blocksize); //取得补码的长度
      $string .= str_repeat(chr($pad), $pad); //用ASCII码为补码长度的字符， 补足最后一段
      return $string;

   }

2. aes128cbcEncrypt($str, $iv = self::IV, $key = self::KEY) { // $this->addPkcs7Padding($str,16)

      $base = (mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $this->addPkcs7Padding($str, 16), MCRYPT_MODE_CBC, $iv));
      return $this->strToHex($base);

   }

3. strToHex($string) {//字符串转十六进制

      $hex = "";
      $tmp = "";
      for ($i = 0; $i < strlen($string); $i++) {
          $tmp = dechex(ord($string[$i]));
          $hex.= strlen($tmp) == 1 ? "0" . $tmp : $tmp;
      }
      $hex = strtoupper($hex);
      return $hex;

   }
   aes加密 在网上找的代码有PHP 和 android 的 来位好心人讲讲$aes = new aes(); $aes->aes128cbcEncrypt('token');这个加密过程的每一步呗 或者帮忙写一份对应的js版本的 = =