<?php/** * 加密基礎類 */class Crypt_AES{  protected $_cipher = "rijndael-128";  protected $_mode = "cbc";  protected $_key;  protected $_iv = null;  protected $_descriptor = null;  /**   * 是否按照PKCS #7 的標準進行填充   * 為否默認將填充“/0”補位   * @var boolean   */  protected $_PKCS7 = false;  /**   * 構造函數，對于密鑰key應區分2進制字符串和16進制的。   * 如需兼容PKCS#7標準，應選項設置開啟PKCS7，默認關閉   * @param string $key    * @param mixed $iv   向量值   * @param array $options   */  public function __construct($key = null, $iv = null, $options = null)  {    if (null !== $key) {      $this->setKey($key);    }    if (null !== $iv) {      $this->setIv($iv);    }    if (null !== $options) {      if (isset($options['chipher'])) {        $this->setCipher($options['chipher']);      }      if (isset($options['PKCS7'])) {        $this->isPKCS7Padding($options['PKCS7']);      }      if (isset($options['mode'])) {        $this->setMode($options['mode']);      }    }  }  /**   * PKCS#7狀態查看，傳入Boolean值進行設置   * @param boolean $flag   * @return boolean   */  public function isPKCS7Padding($flag = null)  {    if (null === $flag) {      return $this->_PKCS7;    }    $this->_PKCS7 = (bool) $flag;  }  /**   * 開啟加密算法   * @param string $algorithm_directory locate the encryption    * @param string $mode_directory   * @return Crypt_AES   */  public function _openMode($algorithm_directory = "" , $mode_directory = "")   {    $this->_descriptor = mcrypt_module_open($this->_cipher,                         $algorithm_directory,                         $this->_mode,                        $mode_directory);    return $this;  }  public function getDescriptor()  {    if (null === $this->_descriptor) {      $this->_openMode();    }    return $this->_descriptor;  }  protected function _genericInit()  {    return mcrypt_generic_init($this->getDescriptor(), $this->getKey(), $this->getIv());  }  protected function _genericDeinit()  {    return mcrypt_generic_deinit($this->getDescriptor());  }  public function getMode()  {    return $this->_mode;  }    public function setMode($mode)  {    $this->_mode = $mode;    return $this;  }  public function getCipher()  {    return $this->_cipher;  }    public function setCipher($cipher)  {    $this->_cipher = $cipher;    return $this;  }    /**   * 獲得key   * @return string   */  public function getKey()  {    return $this->_key;  }    /**   * 設置可以   * @param string $key   */  public function setKey($key)  {    $this->_key = $key;    return $this;  }    /**   * 獲得加密向量塊,如果其為null時將追加當前Descriptor的IV大小長度   *   * @return string   */  public function getIv()  {    if (null === $this->_iv && in_array($this->_mode, array( "cbc", "cfb", "ofb", ))) {      $size = mcrypt_enc_get_iv_size($this->getDescriptor());      $this->_iv = str_pad("", 16, "/0");    }    return $this->_iv;  }  /**   * 獲得向量塊   *   * @param string $iv   * @return Crypt_AES $this   */  public function setIv($iv)  {    $this->_iv = $iv;    return $this;  }    /**   * 加密   * @param string $str 被加密文本   * @return string   */  public function encrypt($str){    $td = $this->getDescriptor();    $this->_genericInit();    $bin = mcrypt_generic($td, $this->padding($str));    $this->_genericDeinit();    return $bin;  }   public function padding($dat)  {    if ($this->isPKCS7Padding()) {      $block = mcrypt_enc_get_block_size($this->getDescriptor());         $len = strlen($dat);      $padding = $block - ($len % $block);      $dat .= str_repeat(chr($padding),$padding);          }    return $dat;  }  public function unpadding($str)  {    if ($this->isPKCS7Padding()) {      $pad = ord($str[($len = strlen($str)) - 1]);      $str = substr($str, 0, strlen($str) - $pad);    }    return $str;  }  /**   * 解密   * @param string $str    * @return string   */  public function decrypt($str){    $td = $this->getDescriptor();    $this->_genericInit();    $text = mdecrypt_generic($td, $str);    $this->_genericDeinit();    return $this->unpadding($text);  }    /**   * 16進制轉成2進制數據   * @param string $hexdata 16進制字符串   * @return string   */  public static function hex2bin($hexdata)   {    return pack("H*" , $hexdata);  }  /**   * 字符串轉十六進制   * @param string $hexdata 16進制字符串   * @return string   */  public static function strToHex($string)  {    $hex='';    for($i=0;$i<strlen($string);$i++)      $hex.=dechex(ord($string[$i]));    $hex=strtoupper($hex);    return $hex;  }  /**   * 十六進制轉字符串   * @param string $hexdata 16進制字符串   * @return string   */  function hexToStr($hex)  {    $string='';    for($i=0;$i<strlen($hex)-1;$i+=2)      $string.=chr(hexdec($hex[$i].$hex[$i+1]));    return $string;  }}

<?php include 'AES.php';$md5Key = 'ThisIsAMd5Key';               // 對應服務端：$md5key = 'ThisIsAMd5Key';$aesKey = Crypt_AES::strToHex('1qa2ws4rf3edzxcv');   // 對應服務端：$aesKey = '3171613277733472663365647A786376';$aesKey = Crypt_AES::hex2bin($aesKey);$aesIV = Crypt_AES::strToHex('dfg452ws');       // 對應服務端：$aesIV = '6466673435327773';$aes = new Crypt_AES($aesKey,$aesIV,array('PKCS7'=>true, 'mode'=>'cbc'));// var_dump($aes);$data['name'] = 'idoubi';$data['sex']= 'male';$data['age'] = 23;$data['signature'] = '白天我是一個程序員，晚上我就是一個有夢想的演員。';$content = base64_encode($aes->encrypt(json_encode($data)));$content = urlencode($content);$sign = md5($content.$md5Key);$url = 'http://localhost/aesdemo/api.php';$params = "version=1.0&sign=$sign&content=$content";// 請求接口post($url, $params);/** * 接口請求函數 */function post($url, $params) {  $curlPost= $params;  $ch = curl_init();   //初始化curl  curl_setopt($ch, CURLOPT_URL, $url);  //提交到指定網頁  curl_setopt($ch, CURLOPT_HEADER, 0);  //設置header  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);  //要求結果為字符串且輸出到屏幕上  curl_setopt($ch, CURLOPT_POST, 1);  //post提交方式  curl_setopt($ch, CURLOPT_POSTFIELDS, $curlPost);  $result = curl_exec($ch);//運行curl  curl_close($ch);  var_dump(json_decode($result, true));}

<?php include 'AES.php';$data = $_POST; // 接口請求得到的數據$content = $data['content'];$sign = $data['sign'];$aesKey = '3171613277733472663365647A786376';$aesIV = '6466673435327773';$md5key = 'ThisIsAMd5Key';// 校驗數據if(strcasecmp(md5(urlencode($content).$md5key),$sign) == 0) {  // 數據校驗成功  $key = Crypt_AES::hex2bin($aesKey);  $aes = new Crypt_AES($key, $aesIV, array('PKCS7'=>true, 'mode'=>'cbc'));  $decrypt = $aes->decrypt(base64_decode($content));  if (!$decrypt) {   // 解密失敗    echo json_encode('can not decrypt the data');  } else {    echo json_encode($decrypt);   // 解密成功  }} else{  echo json_encode('data is not integrity');    // 數據校驗失敗}