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.\" ========================================================================
.\"
.IX Title "Crypt::Mac::PMAC 3"
.TH Crypt::Mac::PMAC 3 "2022-01-07" "perl v5.26.3" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
Crypt::Mac::PMAC \- Message authentication code PMAC
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&   ### Functional interface:
\&   use Crypt::Mac::PMAC qw( pmac pmac_hex );
\&
\&   # calculate MAC from string/buffer
\&   $pmac_raw  = pmac($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\&   $pmac_hex  = pmac_hex($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\&   $pmac_b64  = pmac_b64($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\&   $pmac_b64u = pmac_b64u($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\&
\&   ### OO interface:
\&   use Crypt::Mac::PMAC;
\&
\&   $d = Crypt::Mac::PMAC\->new($cipher_name, $key);
\&   $d\->add(\*(Aqany data\*(Aq);
\&   $d\->addfile(\*(Aqfilename.dat\*(Aq);
\&   $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
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Provides an interface to the \s-1PMAC\s0 message authentication code (\s-1MAC\s0) algorithm.
.SH "EXPORT"
.IX Header "EXPORT"
Nothing is exported by default.
.PP
You can export selected functions:
.PP
.Vb 1
\&  use Crypt::Mac::PMAC qw(pmac pmac_hex );
.Ve
.PP
Or all of them at once:
.PP
.Vb 1
\&  use Crypt::Mac::PMAC \*(Aq:all\*(Aq;
.Ve
.SH "FUNCTIONS"
.IX Header "FUNCTIONS"
.SS "pmac"
.IX Subsection "pmac"
Logically joins all arguments into a single string, and returns its \s-1PMAC\s0 message authentication code encoded as a binary string.
.PP
.Vb 3
\& $pmac_raw = pmac($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\& #or
\& $pmac_raw = pmac($cipher_name, $key, \*(Aqany data\*(Aq, \*(Aqmore data\*(Aq, \*(Aqeven more data\*(Aq);
.Ve
.SS "pmac_hex"
.IX Subsection "pmac_hex"
Logically joins all arguments into a single string, and returns its \s-1PMAC\s0 message authentication code encoded as a hexadecimal string.
.PP
.Vb 3
\& $pmac_hex = pmac_hex($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\& #or
\& $pmac_hex = pmac_hex($cipher_name, $key, \*(Aqany data\*(Aq, \*(Aqmore data\*(Aq, \*(Aqeven more data\*(Aq);
.Ve
.SS "pmac_b64"
.IX Subsection "pmac_b64"
Logically joins all arguments into a single string, and returns its \s-1PMAC\s0 message authentication code encoded as a Base64 string.
.PP
.Vb 3
\& $pmac_b64 = pmac_b64($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\& #or
\& $pmac_b64 = pmac_b64($cipher_name, $key, \*(Aqany data\*(Aq, \*(Aqmore data\*(Aq, \*(Aqeven more data\*(Aq);
.Ve
.SS "pmac_b64u"
.IX Subsection "pmac_b64u"
Logically joins all arguments into a single string, and returns its \s-1PMAC\s0 message authentication code encoded as a Base64 \s-1URL\s0 Safe string (see \s-1RFC 4648\s0 section 5).
.PP
.Vb 3
\& $pmac_b64url = pmac_b64u($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\& #or
\& $pmac_b64url = pmac_b64u($cipher_name, $key, \*(Aqany data\*(Aq, \*(Aqmore data\*(Aq, \*(Aqeven more data\*(Aq);
.Ve
.SH "METHODS"
.IX Header "METHODS"
.SS "new"
.IX Subsection "new"
.Vb 1
\& $d = Crypt::Mac::PMAC\->new($cipher_name, $key);
.Ve
.SS "clone"
.IX Subsection "clone"
.Vb 1
\& $d\->clone();
.Ve
.SS "reset"
.IX Subsection "reset"
.Vb 1
\& $d\->reset();
.Ve
.SS "add"
.IX Subsection "add"
.Vb 3
\& $d\->add(\*(Aqany data\*(Aq);
\& #or
\& $d\->add(\*(Aqany data\*(Aq, \*(Aqmore data\*(Aq, \*(Aqeven more data\*(Aq);
.Ve
.SS "addfile"
.IX Subsection "addfile"
.Vb 3
\& $d\->addfile(\*(Aqfilename.dat\*(Aq);
\& #or
\& $d\->addfile(*FILEHANDLE);
.Ve
.SS "mac"
.IX Subsection "mac"
.Vb 1
\& $result_raw = $d\->mac();
.Ve
.SS "hexmac"
.IX Subsection "hexmac"
.Vb 1
\& $result_hex = $d\->hexmac();
.Ve
.SS "b64mac"
.IX Subsection "b64mac"
.Vb 1
\& $result_b64 = $d\->b64mac();
.Ve
.SS "b64umac"
.IX Subsection "b64umac"
.Vb 1
\& $result_b64url = $d\->b64umac();
.Ve
.SH "SEE ALSO"
.IX Header "SEE ALSO"
.IP "\(bu" 4
CryptX
.IP "\(bu" 4
<https://en.wikipedia.org/wiki/PMAC_%28cryptography%29>