PHP实现加密解密算法
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2022-05-19 19:01:10
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PHP实现加密解密的算法,如下代码:
- class Mcrypt
- {
- /**
- * 解密
- *
- * @param string $encryptedText 已加密字符串
- * @param string $key 密钥
- * @return string
- */
- public static function _decrypt($encryptedText,$key = null)
- {
- $key = $key === null ? Config::get('secret_key') : $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
- *
- * @param string $plainText 未加密字符串
- * @param string $key 密钥
- */
- public static function _encrypt($plainText,$key = null)
- {
- $key = $key === null ? Config::get('secret_key') : $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));
- }
- }
- //调用
- class Cookie extends Mcrypt
- {
- /**
- * 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]) ? parent::_decrypt($_COOKIE[$name]) : null;
- }
- /**
- * 设置cookie
- *
- * @param array $args
- * @return boolean
- */
- public static function set($args)
- {
- $name = $args['name'];
- $value= parent::_encrypt($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);
- }
- }
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