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Introduction to PHP simple symmetric encryption algorithm (code example)

不言forward: 2019-03-16 11:39:422542browse

This article brings you an introduction to PHP’s simple symmetric encryption algorithm (code example), which has certain reference value. Friends in need can refer to it, I hope it will be helpful to you.

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Encryption

Without further ado, let’s get straight to the code! The code is as follows:

  /**
   * 简单对称加密算法之加密
   * @param String $string 需要加密的字串
   * @param String $skey   加密EKY
   * @return String
   */
   public static function encode($string = &#39;&#39;, $skey = &#39;cxphp&#39;)
   {
       $strArr   = str_split(base64_encode($string));
       $strCount = count($strArr);
       foreach (str_split($skey) as $key => $value) {
           $key < $strCount && $strArr[$key] .= $value;
       }
       return str_replace(array(&#39;=&#39;, &#39;+&#39;, &#39;/&#39;), array(&#39;O0O0O&#39;, &#39;o000o&#39;, &#39;oo00o&#39;), join(&#39;&#39;, $strArr));
   }

Decryption

Without further ado, let’s go straight to the code! The code is as follows:

/**
 * 简单对称加密算法之解密
 * @param String $string 需要解密的字串
 * @param String $skey   解密KEY
 * @return String
 */
  public static function decode($string = &#39;&#39;, $skey = &#39;cxphp&#39;)
  {
      $strArr   = str_split(str_replace(array(&#39;O0O0O&#39;, &#39;o000o&#39;, &#39;oo00o&#39;), array(&#39;=&#39;, &#39;+&#39;, &#39;/&#39;), $string), 2);
      $strCount = count($strArr);
      foreach (str_split($skey) as $key => $value) {
          $key <= $strCount && isset($strArr[$key]) && $strArr[$key][1] === $value && $strArr[$key] = $strArr[$key][0];
      }
      return base64_decode(join(&#39;&#39;, $strArr));
  }

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