Anubis(3) User Contributed Perl Documentation Anubis(3)NAMECrypt::Anubis - Crypt::CBC-compliant block cipher
ABSTRACT
Anubis is a variable-length key, 128-bit block cipher designed by Vin-
cent Rijmen and Paulo S. L. M. Barreto.
SYNOPSIS
use Crypt::Anubis;
$cipher = new Crypt::Anubis $key;
$ciphertext = $cipher->encrypt($plaintext);
$plaintext = $cipher->decrypt($ciphertext);
DESCRIPTION
Anubis is a variable-length key, 128-bit block cipher designed by Vin-
cent Rijmen and Paulo S. L. M. Barreto. Key length can be 128, 160,
192, 224, 256, 288, or 320 bits. The default key length used in this
implementation is 128 bits (16 bytes).
This module supports the Crypt::CBC interface, with the following func-
tions.
Functions
blocksize
Returns the size (in bytes) of the block (16, in this case).
keysize
Returns the size (in bytes) of the key (16, in this case).
encrypt($data)
Encrypts 16 bytes of $data and returns the corresponding cipher-
text.
decrypt($data)
Decrypts 16 bytes of $data and returns the corresponding plaintext.
EXAMPLE 1
#!/usr/local/bin/perl
use diagnostics;
use strict;
use warnings;
use Crypt::Anubis;
# key must be 16 bytes long
my $key = "0123456789abcdef";
my $cipher = new Crypt::Anubis $key;
print "blocksize = ", $cipher->blocksize, " bytes \n";
print "keysize = ", $cipher->keysize, " bytes \n";
# block must be 16 bytes long
my $plaintext1 = "0123456789abcdef";
my $ciphertext = $cipher->encrypt($plaintext1);
my $plaintext2 = $cipher->decrypt($ciphertext);
print "Decryption OK\n" if ($plaintext1 eq $plaintext2);
EXAMPLE 2
#!/usr/local/bin/perl
use diagnostics;
use strict;
use warnings;
use Crypt::CBC; # CBC automatically loads Anubis for us
# when using Crypt::CBC, key may be of ANY length
my $key = "0123456789abcdef";
# IV must be exactly 16 bytes long
my $IV = pack "H32", 0;
my $cipher = Crypt::CBC->new({'key' => $key,
'cipher' => 'Anubis',
'iv' => $IV,
'regenerate_key' => 1,
'padding' => 'standard',
'prepend_iv' => 0
});
# when using Crypt::CBC, plaintext may be of ANY length
my $plaintext1 = "This is a test";
my $ciphertext = $cipher->encrypt($plaintext1);
my $plaintext2 = $cipher->decrypt($ciphertext);
print "Decryption OK\n" if ($plaintext1 eq $plaintext2);
MORE EXAMPLES
See Crypt::CBC for more examples using CBC mode. See also the "exam-
ples" and "t" directories for some more examples.
SEE ALSO
Crypt::Khazad and Crypt::Misty1
COPYRIGHT AND LICENSE
Copyright 2003 by Julius C. Duque <jcduque (AT) lycos (DOT) com>
This library is free software; you can redistribute it and/or modify it
under the same terms as the GNU General Public License.
perl v5.8.8 2003-06-19 Anubis(3)
