NAME

       Crypt::Mac::Poly1305 - Message authentication code Poly1305 (RFC 7539)

SYNOPSIS

          ### Functional interface:
          use Crypt::Mac::Poly1305 qw( poly1305 poly1305_hex );

          # calculate MAC from string/buffer
          $poly1305_raw  = poly1305($key, 'data buffer');
          $poly1305_hex  = poly1305_hex($key, 'data buffer');
          $poly1305_b64  = poly1305_b64($key, 'data buffer');
          $poly1305_b64u = poly1305_b64u($key, 'data buffer');

          ### OO interface:
          use Crypt::Mac::Poly1305;

          $d = Crypt::Mac::Poly1305->new($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 Poly1305 message authentication code (MAC) algorithm.

EXPORT

       Nothing is exported by default.

       You can export selected functions:

         use Crypt::Mac::Poly1305 qw(poly1305 poly1305_hex );

       Or all of them at once:

         use Crypt::Mac::Poly1305 ':all';

FUNCTIONS

   poly1305
       Logically joins all arguments into a single string, and returns its Poly1305 message
       authentication code encoded as a binary string.

        $poly1305_raw = poly1305($key, 'data buffer');
        #or
        $poly1305_raw = poly1305($key, 'any data', 'more data', 'even more data');

   poly1305_hex
       Logically joins all arguments into a single string, and returns its Poly1305 message
       authentication code encoded as a hexadecimal string.

        $poly1305_hex = poly1305_hex($key, 'data buffer');
        #or
        $poly1305_hex = poly1305_hex($key, 'any data', 'more data', 'even more data');

   poly1305_b64
       Logically joins all arguments into a single string, and returns its Poly1305 message
       authentication code encoded as a Base64 string.

        $poly1305_b64 = poly1305_b64($key, 'data buffer');
        #or
        $poly1305_b64 = poly1305_b64($key, 'any data', 'more data', 'even more data');

   poly1305_b64u
       Logically joins all arguments into a single string, and returns its Poly1305 message
       authentication code encoded as a Base64 URL Safe string (see RFC 4648 section 5).

        $poly1305_b64url = poly1305_b64u($key, 'data buffer');
        #or
        $poly1305_b64url = poly1305_b64u($key, 'any data', 'more data', 'even more data');

METHODS

   new
        $d = Crypt::Mac::Poly1305->new($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

       •   CryptX

       •   <https://www.ietf.org/rfc/rfc7539.txt>