php实现aes加密类分享

点评：本文主要介绍了php实现的aes加密类，代码中有使用方法,感兴趣的朋友可以参考下，希望对大家有所帮助！

 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));