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Crypt::Mac::OMAC(3)   User Contributed Perl Documentation  Crypt::Mac::OMAC(3)

NAME
       Crypt::Mac::OMAC	- Message authentication code OMAC

SYNOPSIS
	  ### Functional interface:
	  use Crypt::Mac::OMAC qw( omac	omac_hex );

	  # calculate MAC from string/buffer
	  $omac_raw  = omac($cipher_name, $key,	'data buffer');
	  $omac_hex  = omac_hex($cipher_name, $key, 'data buffer');
	  $omac_b64  = omac_b64($cipher_name, $key, 'data buffer');
	  $omac_b64u = omac_b64u($cipher_name, $key, 'data buffer');

	  ### OO interface:
	  use Crypt::Mac::OMAC;

	  $d = Crypt::Mac::OMAC->new($cipher_name, $key);
	  $d->add('any data');
	  $d->addfile('filename.dat');
	  $d->addfile(*FILEHANDLE);
	  $result_raw  = $d->mac;     #	raw bytes
	  $result_hex  = $d->hexmac;  #	hexadecimal form
	  $result_b64  = $d->b64mac;  #	Base64 form
	  $result_b64u = $d->b64umac; #	Base64 URL Safe	form

DESCRIPTION
       Provides	an interface to	the OMAC message authentication	code (MAC)
       algorithm.

EXPORT
       Nothing is exported by default.

       You can export selected functions:

	 use Crypt::Mac::OMAC qw(omac omac_hex );

       Or all of them at once:

	 use Crypt::Mac::OMAC ':all';

FUNCTIONS
   omac
       Logically joins all arguments into a single string, and returns its
       OMAC message authentication code	encoded	as a binary string.

	$omac_raw = omac($cipher_name, $key, 'data buffer');
	#or
	$omac_raw = omac($cipher_name, $key, 'any data', 'more data', 'even more data');

   omac_hex
       Logically joins all arguments into a single string, and returns its
       OMAC message authentication code	encoded	as a hexadecimal string.

	$omac_hex = omac_hex($cipher_name, $key, 'data buffer');
	#or
	$omac_hex = omac_hex($cipher_name, $key, 'any data', 'more data', 'even	more data');

   omac_b64
       Logically joins all arguments into a single string, and returns its
       OMAC message authentication code	encoded	as a Base64 string.

	$omac_b64 = omac_b64($cipher_name, $key, 'data buffer');
	#or
	$omac_b64 = omac_b64($cipher_name, $key, 'any data', 'more data', 'even	more data');

   omac_b64u
       Logically joins all arguments into a single string, and returns its
       OMAC message authentication code	encoded	as a Base64 URL	Safe string
       (see RFC	4648 section 5).

	$omac_b64url = omac_b64u($cipher_name, $key, 'data buffer');
	#or
	$omac_b64url = omac_b64u($cipher_name, $key, 'any data', 'more data', 'even more data');

METHODS
   new
	$d = Crypt::Mac::OMAC->new($cipher_name, $key);

   clone
	$d->clone();

   reset
	$d->reset();

   add
	$d->add('any data');
	#or
	$d->add('any data', 'more data', 'even more data');

   addfile
	$d->addfile('filename.dat');
	#or
	$d->addfile(*FILEHANDLE);

   mac
	$result_raw = $d->mac();

   hexmac
	$result_hex = $d->hexmac();

   b64mac
	$result_b64 = $d->b64mac();

   b64umac
	$result_b64url = $d->b64umac();

SEE ALSO
       o   CryptX

       o   <https://en.wikipedia.org/wiki/OMAC_%28cryptography%29>

perl v5.24.1			  2017-05-30		   Crypt::Mac::OMAC(3)

NAME | SYNOPSIS | DESCRIPTION | EXPORT | FUNCTIONS | METHODS | SEE ALSO

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