Crypt::Cipher::CAST5 - Symmetric cipher CAST5 (aka CAST-128), key size: 40-128 bits

NAME  SYNOPSIS  DESCRIPTION  METHODS  new  encrypt  decrypt  keysize  blocksize  max_keysize  min_keysize  default_rounds  SEE ALSO 

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NAME

Crypt::Cipher::CAST5 − Symmetric cipher CAST5 (aka CAST−128), key size: 40−128 bits

SYNOPSIS

### example 1
use Crypt::Mode::CBC;
my $key = '...'; # length has to be valid key size for this cipher
my $iv = '...'; # 16 bytes
my $cbc = Crypt::Mode::CBC−>new('CAST5');
my $ciphertext = $cbc−>encrypt("secret data", $key, $iv);
### example 2 (slower)
use Crypt::CBC;
use Crypt::Cipher::CAST5;
my $key = '...'; # length has to be valid key size for this cipher
my $iv = '...'; # 16 bytes
my $cbc = Crypt::CBC−>new( −cipher=>'Cipher::CAST5', −key=>$key, −iv=>$iv );
my $ciphertext = $cbc−>encrypt("secret data");

DESCRIPTION

This module implements the CAST5 cipher. Provided interface is compliant with Crypt::CBC module.

BEWARE: This module implements just elementary "one−block−(en|de)cryption" operation − if you want to encrypt/decrypt generic data you have to use some of the cipher block modes − check for example Crypt::Mode::CBC, Crypt::Mode::CTR or Crypt::CBC (which will be slower).

METHODS

new

$c = Crypt::Cipher::CAST5−>new($key);
#or
$c = Crypt::Cipher::CAST5−>new($key, $rounds);

encrypt

$ciphertext = $c−>encrypt($plaintext);

decrypt

$plaintext = $c−>decrypt($ciphertext);

keysize

$c−>keysize;
#or
Crypt::Cipher::CAST5−>keysize;
#or
Crypt::Cipher::CAST5::keysize;

blocksize

$c−>blocksize;
#or
Crypt::Cipher::CAST5−>blocksize;
#or
Crypt::Cipher::CAST5::blocksize;

max_keysize

$c−>max_keysize;
#or
Crypt::Cipher::CAST5−>max_keysize;
#or
Crypt::Cipher::CAST5::max_keysize;

min_keysize

$c−>min_keysize;
#or
Crypt::Cipher::CAST5−>min_keysize;
#or
Crypt::Cipher::CAST5::min_keysize;

default_rounds

$c−>default_rounds;
#or
Crypt::Cipher::CAST5−>default_rounds;
#or
Crypt::Cipher::CAST5::default_rounds;

SEE ALSO

	•		CryptX, Crypt::Cipher
	•		<https://en.wikipedia.org/wiki/CAST−128>

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