Crypt::Misty1 - Crypt::CBC-compliant block cipher
Misty1 is a 128-bit key, 64-bit block cipher. Designed by Mitsuru Matsui, the inventor of linear cryptanalysis, Misty1 is the first cipher that is provably secure against linear and differential cryptanalysis.
use Crypt::Misty1; $cipher = new Crypt::Misty1 $key; $ciphertext = $cipher->encrypt($plaintext); $plaintext = $cipher->decrypt($ciphertext);
Misty1 is a 64-bit symmetric block cipher with a 128-bit key. It was developed by Mitsuru Matsui, and is described in the paper New Block Encryption Algorithm MISTY and in RFC2994.
In January of 2000, the 3GPP consortium selected a variant of Misty1, dubbed as KASUMI (the Japanese word for ``misty''), as the mandatory cipher in W-CDMA.
This module supports the Crypt::CBC interface, with the following functions.
Returns the size (in bytes) of the block (8, in this case).
Returns the size (in bytes) of the key (16, in this case).
Encrypts 8 bytes of $data and returns the corresponding ciphertext.
Decrypts 8 bytes of $data and returns the corresponding plaintext.
#!/usr/local/bin/perl use diagnostics; use strict; use warnings; use Crypt::Misty1; # key must be 16 bytes long my $key = "0123456789abcdef"; my $cipher = new Crypt::Misty1 $key; print "blocksize = ", $cipher->blocksize, " bytes \n"; print "keysize = ", $cipher->keysize, " bytes \n"; # block must be 8 bytes long my $plaintext1 = "Testing1"; my $ciphertext = $cipher->encrypt($plaintext1); my $plaintext2 = $cipher->decrypt($ciphertext); print "Decryption OK\n" if ($plaintext1 eq $plaintext2);
#!/usr/local/bin/perl use diagnostics; use strict; use warnings; use Crypt::CBC; # CBC automatically loads Misty1 for us # when using Crypt::CBC, key may be of ANY length my $key = "0123456789abcdef"; # IV must be exactly 8 bytes long my $IV = pack "H16", 0; my $cipher = Crypt::CBC->new({'key' => $key, 'cipher' => 'Misty1', '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);
See Crypt::CBC for more examples using CBC mode. See also the "examples" and "t" directories for some more examples.
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.
To install Crypt::Misty1, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Crypt::Misty1
CPAN shell
perl -MCPAN -e shell install Crypt::Misty1
For more information on module installation, please visit the detailed CPAN module installation guide.