标准PHP的AES加密算法类_php技巧

分享一个标准PHP的AES加密算法类，其中mcrypt_get_block_size(‘rijndael-128’, ‘ecb’);，如果在不明白原理的情况下比较容易搞错，可以通过mcrypt_list_algorithms函数查看你需要的加密算法标识。

<br /><?php<br />/**<br /> * AES128加解密类<br /> * @author dy<br /> *<br /> */<br />defined('InEjbuy') or exit('Access Invalid!');<br />class Aes{<br />    //密钥<br />    private $_secrect_key;<br />    public function __construct(){<br />        $this->_secrect_key = 'MYgGnQE2jDFADSFFDSEWsdD';<br />    }<br />    /**<br />     * 加密方法<br />     * @param string $str<br />     * @return string<br />     */<br />    public function encrypt($str){<br />        //AES, 128 ECB模式加密数据<br />        $screct_key = $this->_secrect_key;<br />        $screct_key = base64_decode($screct_key);<br />        $str = trim($str);<br />        $str = $this->addPKCS7Padding($str);<br />        $iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128,MCRYPT_MODE_ECB),MCRYPT_RAND);<br />        $encrypt_str =  mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $screct_key, $str, MCRYPT_MODE_ECB, $iv);<br />        return base64_encode($encrypt_str);<br />    }<br />    /**<br />     * 解密方法<br />     * @param string $str<br />     * @return string<br />     */<br />    public function decrypt($str){<br />        //AES, 128 ECB模式加密数据<br />        $screct_key = $this->_secrect_key;<br />        $str = base64_decode($str);<br />        $screct_key = base64_decode($screct_key);<br />        $iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128,MCRYPT_MODE_ECB),MCRYPT_RAND);<br />        $encrypt_str =  mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $screct_key, $str, MCRYPT_MODE_ECB, $iv);<br />        $encrypt_str = trim($encrypt_str);<br />        $encrypt_st<span>%本文来源gaodai#ma#com搞*代#码9网#</span><strong>搞gaodaima代码</strong>r = $this->stripPKSC7Padding($encrypt_str);<br />        return $encrypt_str;<br />    }<br />    /**<br />     * 填充算法<br />     * @param string $source<br />     * @return string<br />     */<br />    function addPKCS7Padding($source){<br />        $source = trim($source);<br />        $block = mcrypt_get_block_size('rijndael-128', 'ecb');<br />        $pad = $block - (strlen($source) % $block);<br />        if ($pad <= $block) {<br />            $char = chr($pad);<br />            $source .= str_repeat($char, $pad);<br />        }<br />        return $source;<br />    }<br />    /**<br />     * 移去填充算法<br />     * @param string $source<br />     * @return string<br />     */<br />    function stripPKSC7Padding($source){<br />        $source = trim($source);<br />        $char = substr($source, -1);<br />        $num = ord($char);<br />        if($num==62)return $source;<br />        $source = substr($source,0,-$num);<br />        return $source;<br />    }<br />}<br />

以上就是本文所述的全部内容了，希望对大家学习php的AES加密算法类有所帮助。

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