NAME
Crypt::Cipher::KASUMI - Symmetric cipher KASUMI, key size: 128 bits
SYNOPSIS
### example 1
use Crypt::Mode::CBC;
my $key = '...'; # length must be a valid key size for this cipher
my $iv = '...'; # 16 bytes
my $cbc = Crypt::Mode::CBC->new('KASUMI');
my $ciphertext = $cbc->encrypt("secret data", $key, $iv);
### example 2 (slower)
use Crypt::CBC;
use Crypt::Cipher::KASUMI;
my $key = '...'; # length must be a valid key size for this cipher
my $iv = '...'; # 16 bytes
my $cbc = Crypt::CBC->new( -cipher=>'Cipher::KASUMI', -key=>$key, -iv=>$iv );
my $ciphertext = $cbc->encrypt("secret data");DESCRIPTION
This module implements the KASUMI cipher. Its interface is compatible with Crypt::CBC.
Note: This module only implements single-block encryption and decryption. For general data, use a block mode such as Crypt::Mode::CBC, Crypt::Mode::CTR, or Crypt::CBC (which is slower).
METHODS
Unless noted otherwise, assume $c is an existing cipher object created via new, for example:
my $c = Crypt::Cipher::KASUMI->new($key);new
my $c = Crypt::Cipher::KASUMI->new($key);
#or
my $c = Crypt::Cipher::KASUMI->new($key, $rounds);
# $key .... [binary string] key of an accepted length (see keysize, min_keysize, max_keysize)
# $rounds . [integer] optional, number of rounds (if supported by the cipher; croaks on invalid value)encrypt
Encrypts exactly one block of plaintext. The length of $plaintext must equal "blocksize"; croaks otherwise. An empty string is accepted and returned unchanged.
my $ciphertext = $c->encrypt($plaintext);Returns the encrypted block as a binary string (raw bytes).
decrypt
Decrypts exactly one block of ciphertext. The length of $ciphertext must equal "blocksize"; croaks otherwise. An empty string is accepted and returned unchanged.
my $plaintext = $c->decrypt($ciphertext);Returns the decrypted block as a binary string (raw bytes).
keysize
Just an alias for max_keysize.
$c->keysize;
#or
Crypt::Cipher::KASUMI->keysize;
#or
Crypt::Cipher::KASUMI::keysize;blocksize
Returns the cipher block size (in bytes).
$c->blocksize;
#or
Crypt::Cipher::KASUMI->blocksize;
#or
Crypt::Cipher::KASUMI::blocksize;max_keysize
Returns the maximum key size (in bytes).
$c->max_keysize;
#or
Crypt::Cipher::KASUMI->max_keysize;
#or
Crypt::Cipher::KASUMI::max_keysize;min_keysize
Returns the minimum key size (in bytes).
$c->min_keysize;
#or
Crypt::Cipher::KASUMI->min_keysize;
#or
Crypt::Cipher::KASUMI::min_keysize;default_rounds
Returns the cipher's default round count.
$c->default_rounds;
#or
Crypt::Cipher::KASUMI->default_rounds;
#or
Crypt::Cipher::KASUMI::default_rounds;