fpoirotte\Cryptal\DefaultAlgorithms\Cmac Class Reference

Inheritance diagram for fpoirotte\Cryptal\DefaultAlgorithms\Cmac:

Public Member Functions
	__construct (MacEnum $macAlgorithm, SubAlgorithmAbstractEnum $innerAlgorithm, $key, $nonce= '')
Public Member Functions inherited from fpoirotte\Cryptal\AbstractContextBasedAlgorithm
	__toString ()
	finalize ($raw=false)
	update ($data)
Public Member Functions inherited from fpoirotte\Cryptal\ContextBasedInterface
	__toString ()
	finalize ($raw=false)
	update ($data)

Protected Member Functions
	internalFinalize ()
	internalUpdate ($data)
Protected Member Functions inherited from fpoirotte\Cryptal\AbstractContextBasedAlgorithm
	internalFinalize ()
	internalUpdate ($data)

Static Protected Attributes
static	$polynomials

Static Private Member Functions
static	mul2mod ($n, $l)

Private Attributes
	$cipher
	$data
	$k1
	$k2

Additional Inherited Members
Static Public Member Functions inherited from fpoirotte\Cryptal\Implementers\AbstractMac
static	mac (MacEnum $macAlgorithm, SubAlgorithmAbstractEnum $innerAlgorithm, $key, $data, $nonce= '', $raw=false)

Detailed Description

Cipher-based message authentication code.

Definition at line 18 of file Cmac.php.

Constructor & Destructor Documentation

fpoirotte\Cryptal\DefaultAlgorithms\Cmac::__construct	(	MacEnum	$macAlgorithm,
		SubAlgorithmAbstractEnum	$innerAlgorithm,
			$key,
			$nonce = ''
	)

Construct a new context to generate a Message Authentication Code.

Parameters

MacEnum	$macAlgorithm	Algorithm to use to produce the message authentication code.
SubAlgorithmAbstractEnum	$innerAlgorithm	Inner algorithm used during generation. This should be either an instance of CipherEnum or MacEnum, depending on the value for the $macAlgorithm parameter.

Warning

For MAC algorithms that use ciphers, the cipher must be configured to use the Electronic Codebook (ECB) mode. Other modes of operations will result in garbage output.

Parameters

string	$key	Secret key used to produce the Message Authentication Code.
string	$nonce	(optional) Nonce used to randomize the output.

Note

Not all MAC algorithms make use of this parameter.

Implements fpoirotte\Cryptal\Implementers\MacInterface.

Definition at line 42 of file Cmac.php.

Member Data Documentation

fpoirotte\Cryptal\DefaultAlgorithms\Cmac::$polynomials

staticprotected

Initial value:

= array(
        48  => "\x00\x2D",
        64  => "\x00\x1B",
        96  => "\x06\x41",
        128 => "\x00\x87",
        160 => "\x00\x2D",
        192 => "\x00\x87",
        224 => "\x03\x09",
        256 => "\x04\x25",
        384 => "\x10\x0D",
        512 => "\x01\x25",
    )

See http://sci.crypt.narkive.com/3lS5EbY4/ and http://www.hpl.hp.com/techreports/98/HPL-98-135.pdf

Definition at line 24 of file Cmac.php.

---

The documentation for this class was generated from the following file:

• src/Cryptal/DefaultAlgorithms/Cmac.php