PHP Класс lithium\storage\session\strategy\Encrypt

To use this class, you need to have the mcrypt extension enabled. Example configuration: {{{ Session::config(array('default' => array( 'adapter' => 'Cookie', 'strategies' => array('Encrypt' => array('secret' => 'foobar')) ))); }}} By default, this strategy uses the AES algorithm in the CBC mode. This means that an initialization vector has to be generated and transported with the payload data. This is done transparently, but you may want to keep this in mind (the ECB mode doesn't require an itialization vector but is not recommended to use as it's insecure). You can override this defaults by passing a different cipher and/or mode to the config like this: {{{ Session::config(array('default' => array( 'adapter' => 'Cookie', 'strategies' => array('Encrypt' => array( 'cipher' => MCRYPT_RIJNDAEL_128, 'mode' => MCRYPT_MODE_ECB, // Don't use ECB when you don't have to! 'secret' => 'foobar' )) ))); }}} Please keep in mind that it is generally not a good idea to store sensitive information in cookies (or generally on the client side) and this class is no exception to the rule. It allows you to store client side data in a more secure way, but 100% security can't be achieved.
См. ссылку: The mcrypt extension.
См. ссылку: List of supported ciphers.
См. ссылку: List of supported modes.
Наследование: extends lithium\core\Object
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Защищенные свойства (Protected)

Свойство Тип Описание
$_defaults Default configuration.
$_resource Holds the crypto resource after initialization.
$_vector Holds the initialization vector.

Открытые методы

Метод Описание
__construct ( array $config = [] ) : void Constructor.
__destruct ( ) : void Destructor. Closes the crypto resource when it is no longer needed.
delete ( mixed $data, array $options = [] ) : string Delete encryption method.
enabled ( ) : boolean Determines if the Mcrypt extension has been installed.
read ( array $data, array $options = [] ) : mixed Read encryption method.
write ( mixed $data, array $options = [] ) : string Write encryption method.

Защищенные методы

Метод Описание
_decrypt ( string $encrypted ) : array Decrypt and unserialize a previously encrypted string.
_encrypt ( array $decrypted = [] ) : string Serialize and encrypt a given data array.
_hashSecret ( string $key ) : string Hashes the given secret to make harder to detect.
_vector ( ) : string Generates an initialization vector.
_vectorSize ( ) : number Returns the vector size vor a given cipher and mode.

Описание методов

__construct() публичный Метод

Constructor.
public __construct ( array $config = [] ) : void
$config array Configuration array. You can override the default cipher and mode.
Результат void

__destruct() публичный Метод

Destructor. Closes the crypto resource when it is no longer needed.
public __destruct ( ) : void
Результат void

_decrypt() защищенный Метод

Decrypt and unserialize a previously encrypted string.
protected _decrypt ( string $encrypted ) : array
$encrypted string The base64 encoded and encrypted string.
Результат array The cleartext data.

_encrypt() защищенный Метод

Serialize and encrypt a given data array.
protected _encrypt ( array $decrypted = [] ) : string
$decrypted array The cleartext data to be encrypted.
Результат string A Base64 encoded and encrypted string.

_hashSecret() защищенный Метод

This method figures out the appropriate key size for the chosen encryption algorithm and then hashes the given key accordingly. Note that if the key has already the needed length, it is considered to be hashed (secure) already and is therefore not hashed again. This lets you change the hashing method in your own code if you like. The default MCRYPT_RIJNDAEL_128 key should be 32 byte long sha256 is used as the hashing algorithm. If the key size is shorter than the one generated by sha256, the first n bytes will be used.
См. ссылку: http://php.net/function.mcrypt-enc-get-key-size.php
protected _hashSecret ( string $key ) : string
$key string The possibly too weak key.
Результат string The hashed (raw) key.

_vector() защищенный статический Метод

Generates an initialization vector.
См. ссылку: http://php.net/function.mcrypt-create-iv.php
protected static _vector ( ) : string
Результат string Returns an initialization vector.

_vectorSize() защищенный статический Метод

Returns the vector size vor a given cipher and mode.
См. ссылку: http://php.net/function.mcrypt-enc-get-iv-size.php
protected static _vectorSize ( ) : number
Результат number The vector size.

delete() публичный Метод

Delete encryption method.
public delete ( mixed $data, array $options = [] ) : string
$data mixed The data to be encrypted.
$options array Options for this method.
Результат string Returns the deleted data in cleartext.

enabled() публичный статический Метод

Determines if the Mcrypt extension has been installed.
public static enabled ( ) : boolean
Результат boolean `true` if enabled, `false` otherwise.

read() публичный Метод

Read encryption method.
public read ( array $data, array $options = [] ) : mixed
$data array the Data being read.
$options array Options for this method.
Результат mixed Returns the decrypted key or the dataset.

write() публичный Метод

Write encryption method.
public write ( mixed $data, array $options = [] ) : string
$data mixed The data to be encrypted.
$options array Options for this method.
Результат string Returns the written data in cleartext.

Описание свойств

$_defaults защищенное свойство

Default configuration.
protected $_defaults

$_resource защищенное статическое свойство

Holds the crypto resource after initialization.
protected static $_resource

$_vector защищенное статическое свойство

Holds the initialization vector.
protected static $_vector