PHP implementation of the RFC 2104 Hash based Message Authentication Code algorithm.

• copyright: Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
• todo: Patch for refactoring failed tests (key block sizes >80 using internal algo)
• todo: Check if mhash() is a required alternative (will be PECL-only soon)
• license: New BSD License

Located in /Crypt/Hmac.php (line 39)

Zend_Crypt
   |
   --Zend_Crypt_Hmac

static string $_hashAlgorithm = 'md5' (line 62)

Hashing algorithm; can be the md5/sha1 functions or any algorithm name listed in the output of PHP 5.1.2+ hash_algos().

• access: protected

static string $_key = null (line 47)

The key to use for the hash

• access: protected

static string $_packFormat = null (line 54)

pack() format to be used for current hashing method

• access: protected

static array $_supportedMhashAlgorithms = array('adler32',' crc32', 'crc32b', 'gost',
'haval128', 'haval160', 'haval192', 'haval256', 'md4', 'md5', 'ripemd160',
'sha1', 'sha256', 'tiger', 'tiger128', 'tiger160') (line 69)

List of algorithms supported my mhash()

• access: protected

Inherited Variables

Inherited from Zend_Crypt

Zend_Crypt::$_supportedAlgosMhash
Zend_Crypt::$_supportedAlgosOpenssl
Zend_Crypt::$_type

static compute (line 91)

Performs a HMAC computation given relevant details such as Key, Hashing algorithm, the data to compute MAC of, and an output format of String, Binary notation or BTWOC.

• access: public

static string compute (string $key, string $hash, string $data, [string $output = self::STRING], boolean $internal)

• string $key
• string $hash
• string $data
• string $output
• boolean $internal

static _getMhashDefinition (line 172)

Since MHASH accepts an integer constant representing the hash algorithm we need to make a small detour to get the correct integer matching our algorithm's name.

• access: protected

static integer _getMhashDefinition (string $hashAlgorithm)

• string $hashAlgorithm

static _hash (line 146)

Perform HMAC and return the keyed data

• access: protected

static string _hash (string $data, [string $output = self::STRING], [bool $internal = false])

• string $data
• string $output
• bool $internal: Option to not use hash() functions for testing

static _setHashAlgorithm (line 113)

Setter for the hash method.

• access: protected

static Zend_Crypt_Hmac _setHashAlgorithm (string $hash)

• string $hash

Inherited Methods

Inherited From Zend_Crypt

Zend_Crypt::hash()
Zend_Crypt::_detectHashSupport()
Zend_Crypt::_digestHash()
Zend_Crypt::_digestMhash()
Zend_Crypt::_digestOpenssl()

BINARY = 'binary' (line 77)

STRING = 'string' (line 76)

Constants representing the output mode of the hash algorithm

Inherited Constants

Inherited from Zend_Crypt

Zend_Crypt::TYPE_HASH
Zend_Crypt::TYPE_MHASH
Zend_Crypt::TYPE_OPENSSL