php实现cookie加密的方法有哪些

php实现cookie加密的方法,涉及php操作cookie的加密、解密及设置等技巧,具有一定参考借鉴价值,需要的朋友可以参考下。

　　代码如下:

<?php

class Cookie

{

/**

* 解密已经加密了的'cookie

*

* @param string $encryptedText

* @return string

*/

private static function _decrypt($encryptedText)

{

$key = Config::get('secret_key');

$cryptText = base64_decode($encryptedText);

$ivSize = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);

$iv = mcrypt_create_iv($ivSize, MCRYPT_RAND);

$decryptText = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $cryptText, MCRYPT_MODE_ECB, $iv);

return trim($decryptText);

}

/**

* 加密cookie

*

* @param string $plainText

* @return string

*/

private static function _encrypt($plainText)

{

$key = Config::get('secret_key');

$ivSize = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);

$iv = mcrypt_create_iv($ivSize, MCRYPT_RAND);

$encryptText = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $plainText, MCRYPT_MODE_ECB, $iv);

return trim(base64_encode($encryptText));

}

/**

* 删除cookie

*

* @param array $args

* @return boolean

*/

public static function del($args)

{

$name = $args['name'];

$domain = isset($args['domain']) ? $args['domain'] : null;

return isset($_COOKIE[$name]) ? setcookie($name, '', time() - 86400, '/', $domain) : true;

}

/**

* 得到指定cookie的值

*

* @param string $name

*/

public static function get($name)

{

return isset($_COOKIE[$name]) ? self::_decrypt($_COOKIE[$name]) : null;

}

/**

* 设置cookie

*

* @param array $args

* @return boolean

*/

public static function set($args)

{

$name = $args['name'];

$value= self::_encrypt($args['value']);

$expire = isset($args['expire']) ? $args['expire'] : null;

$path = isset($args['path']) ? $args['path'] : '/';

$domain = isset($args['domain']) ? $args['domain'] : null;

$secure = isset($args['secure']) ? $args['secure'] : 0;

return setcookie($name, $value, $expire, $path, $domain, $secure);

}

}