复制代码 代码如下:
<?php

class AESMcrypt {

 public $iv = null;
 public $key = null;
 public $bit = 128;
 private $cipher;

 public function __construct($bit, $key, $iv, $mode) {
  if(empty($bit) || empty($key) || empty($iv) || empty($mode))
  return NULL;

  $this->bit = $bit;
  $this->key = $key;
  $this->iv = $iv;
  $this->mode = $mode;

  switch($this->bit) {
   case 192:$this->cipher = MCRYPT_RIJNDAEL_192; break;
   case 256:$this->cipher = MCRYPT_RIJNDAEL_256; break;
   default: $this->cipher = MCRYPT_RIJNDAEL_128;
  }

  switch($this->mode) {
   case 'ecb':$this->mode = MCRYPT_MODE_ECB; break;
   case 'cfb':$this->mode = MCRYPT_MODE_CFB; break;
   case 'ofb':$this->mode = MCRYPT_MODE_OFB; break;
   case 'nofb':$this->mode = MCRYPT_MODE_NOFB; break;
   default: $this->mode = MCRYPT_MODE_CBC;
  }
 }

 public function encrypt($data) {
  $data = base64_encode(mcrypt_encrypt( $this->cipher, $this->key, $data, $this->mode, $this->iv));
  return $data;
 }

 public function decrypt($data) {
  $data = mcrypt_decrypt( $this->cipher, $this->key, base64_decode($data), $this->mode, $this->iv);
  $data = rtrim(rtrim($data), "/x00../x1F");
  return $data;
 }

}

//使用方法
$aes = new AESMcrypt($bit = 128, $key = 'abcdef1234567890', $iv = '0987654321fedcba', $mode = 'cbc');
$c = $aes->encrypt('haowei.me');
var_dump($aes->decrypt($c));

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