php实现aes加密类分享

php实现aes加密类分享

　　这篇文章主要介绍了php实现的aes加密类，代码中有使用方法,需要的朋友可以参考下

　　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));