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MAC

The MAC abstract class extends Hash class. It is a parent of HMAC and CMAC.

Instance Methods

MAC::__construct($key, $algorithm)

Description: Creates a new MAC class if supplied algorithm is supported.

The MAC class is an abstract class which means that it can't be instantiated. This constructor defines just logic for its subclasses. It sets a supplied key and throws MACException if one of its subclasses does not implement the supplied algorithm.

Parameters

key : string - the key string algorithm : string - the algorithm name

Return value

MAC: New instances of the MAC subclass.

Throws

It can throw MACException with code

  • MACException::HASH_ALGORITHM_NOT_FOUND - the supplied algorithm is not found
  • MACException::KEY_LENGTH_INVALID - the supplied key length is incorrect