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.\" ========================================================================
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.IX Title "Crypt::Mac::F9 3"
.TH Crypt::Mac::F9 3 2023-09-25 "perl v5.38.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH NAME
Crypt::Mac::F9 \- Message authentication code F9
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 2
\&   ### Functional interface:
\&   use Crypt::Mac::F9 qw( f9 f9_hex );
\&
\&   # calculate MAC from string/buffer
\&   $f9_raw  = f9($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\&   $f9_hex  = f9_hex($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\&   $f9_b64  = f9_b64($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\&   $f9_b64u = f9_b64u($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\&
\&   ### OO interface:
\&   use Crypt::Mac::F9;
\&
\&   $d = Crypt::Mac::F9\->new($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 F9 message authentication code (MAC) algorithm.
.SH EXPORT
.IX Header "EXPORT"
Nothing is exported by default.
.PP
You can export selected functions:
.PP
.Vb 1
\&  use Crypt::Mac::F9 qw(f9 f9_hex );
.Ve
.PP
Or all of them at once:
.PP
.Vb 1
\&  use Crypt::Mac::F9 \*(Aq:all\*(Aq;
.Ve
.SH FUNCTIONS
.IX Header "FUNCTIONS"
.SS f9
.IX Subsection "f9"
Logically joins all arguments into a single string, and returns its F9 message authentication code encoded as a binary string.
.PP
.Vb 3
\& $f9_raw = f9($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\& #or
\& $f9_raw = f9($cipher_name, $key, \*(Aqany data\*(Aq, \*(Aqmore data\*(Aq, \*(Aqeven more data\*(Aq);
.Ve
.SS f9_hex
.IX Subsection "f9_hex"
Logically joins all arguments into a single string, and returns its F9 message authentication code encoded as a hexadecimal string.
.PP
.Vb 3
\& $f9_hex = f9_hex($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\& #or
\& $f9_hex = f9_hex($cipher_name, $key, \*(Aqany data\*(Aq, \*(Aqmore data\*(Aq, \*(Aqeven more data\*(Aq);
.Ve
.SS f9_b64
.IX Subsection "f9_b64"
Logically joins all arguments into a single string, and returns its F9 message authentication code encoded as a Base64 string.
.PP
.Vb 3
\& $f9_b64 = f9_b64($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\& #or
\& $f9_b64 = f9_b64($cipher_name, $key, \*(Aqany data\*(Aq, \*(Aqmore data\*(Aq, \*(Aqeven more data\*(Aq);
.Ve
.SS f9_b64u
.IX Subsection "f9_b64u"
Logically joins all arguments into a single string, and returns its F9 message authentication code encoded as a Base64 URL Safe string (see RFC 4648 section 5).
.PP
.Vb 3
\& $f9_b64url = f9_b64u($cipher_name, $key, \*(Aqdata buffer\*(Aq);
\& #or
\& $f9_b64url = f9_b64u($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
\& $d = Crypt::Mac::F9\->new($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
