Crypt::Mac::OMAC

(source, CPAN)

version 0.084

NAME
SYNOPSIS
DESCRIPTION
EXPORT
FUNCTIONS
- omac
- omac_hex
- omac_b64
- omac_b64u
METHODS
- new
- clone
- reset
- add
- addfile
- mac
- hexmac
- b64mac
- b64umac
SEE ALSO

#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();

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