Référence de l'interface AesInterface

Graphe d'héritage de AesInterface:

Fonctions membres publiques
	setEncryptionMode ($mode='cbc', $strength=128)
	encrypt ($plainText, $key, $iv=null)
	decrypt ($cipherText, $key)
	getBlockSize ()
	isSupported ()

Description détaillée

Interface for AES encryption adapters

Depuis

4.0.0

Documentation des fonctions membres

decrypt()

decrypt	(		$cipherText,
			$key
	)

Decrypts a string. Returns the raw binary plaintext.

$ciphertext MUST start with the IV followed by the ciphertext, even for EBC data (the first block of data is dropped in EBC mode since there is no concept of IV in EBC).

WARNING: The returned plaintext is zero-padded to the algorithm's block size during encryption. You are advised to trim the string to the original plaintext's length upon decryption. While rtrim($decrypted, "\0") sounds appealing it's NOT the correct approach for binary data (zero bytes may actually be part of your plaintext, not just padding!).

Paramètres

string	$cipherText	The ciphertext to encrypt
string	$key	The raw binary key (will be zero-padded or chopped if its size is different than the block size)

Renvoie

string The raw unencrypted binary string.

Implémenté dans OpenSSL, et Mcrypt.

encrypt()

encrypt	(		$plainText,
			$key,
			$iv = null
	)

Encrypts a string. Returns the raw binary ciphertext.

WARNING: The plaintext is zero-padded to the algorithm's block size. You are advised to store the size of the plaintext and trim the string to that length upon decryption.

Paramètres

string	$plainText	The plaintext to encrypt
string	$key	The raw binary key (will be zero-padded or chopped if its size is different than the block size)
null | string	$iv	The initialization vector (for CBC mode algorithms)

Renvoie

string The raw encrypted binary string.

Implémenté dans OpenSSL, et Mcrypt.

getBlockSize()

getBlockSize

(

)

Returns the encryption block size in bytes

Renvoie

integer

Implémenté dans OpenSSL, et Mcrypt.

isSupported()

isSupported

(

)

Is this adapter supported?

Renvoie

boolean

Implémenté dans OpenSSL, et Mcrypt.

setEncryptionMode()

setEncryptionMode	(		$mode = 'cbc',
			$strength = 128
	)

Sets the AES encryption mode.

WARNING: The strength is deprecated as it has a different effect in MCrypt and OpenSSL. MCrypt was abandoned in 2003 before the Rijndael-128 algorithm was officially the Advanced Encryption Standard (AES). MCrypt also offered Rijndael-192 and Rijndael-256 algorithms with different block sizes. These are NOT used in AES. OpenSSL, however, implements AES correctly. It always uses a 128-bit (16 byte) block. The 192 and 256 bit strengths refer to the key size, not the block size. Therefore using different strengths in MCrypt and OpenSSL will result in different and incompatible ciphertexts.

TL;DR: Always use $strength = 128!

Paramètres

string	$mode	Choose between CBC (recommended) or ECB
int	$strength	Bit strength of the key (128, 192 or 256 bits). DEPRECATED. READ NOTES ABOVE.

Renvoie

mixed

Implémenté dans OpenSSL, et Mcrypt.

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La documentation de cette interface a été générée à partir du fichier suivant :

• AesInterface.php