NAME
Crypt::Cipher::DES - Symmetric cipher DES, key size: 64[56] 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('DES');
my $ciphertext = $cbc->encrypt("secret data", $key, $iv);
### example 2 (slower)
use Crypt::CBC;
use Crypt::Cipher::DES;
my $key = '...'; # length has to be valid key size for this cipher
my $iv = '...'; # 16 bytes
my $cbc = Crypt::CBC->new( -cipher=>'Cipher::DES', -key=>$key, -iv=>$iv );
my $ciphertext = $cbc->encrypt("secret data");DESCRIPTION
This module implements the DES 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
$c = Crypt::Cipher::DES->new($key);
#or
$c = Crypt::Cipher::DES->new($key, $rounds);encrypt
$ciphertext = $c->encrypt($plaintext);decrypt
$plaintext = $c->decrypt($ciphertext);keysize
$c->keysize;
#or
Crypt::Cipher::DES->keysize;
#or
Crypt::Cipher::DES::keysize;blocksize
$c->blocksize;
#or
Crypt::Cipher::DES->blocksize;
#or
Crypt::Cipher::DES::blocksize;max_keysize
$c->max_keysize;
#or
Crypt::Cipher::DES->max_keysize;
#or
Crypt::Cipher::DES::max_keysize;min_keysize
$c->min_keysize;
#or
Crypt::Cipher::DES->min_keysize;
#or
Crypt::Cipher::DES::min_keysize;default_rounds
$c->default_rounds;
#or
Crypt::Cipher::DES->default_rounds;
#or
Crypt::Cipher::DES::default_rounds;