Crypt::...::Khazad(3)

💖 Crypt::...::Khazad(3) — the Khazad cipher manual 💖

okay so bestie, this is the User Contributed Perl Documentation page for Crypt::...::Khazad(3), and it's literally all about Crypt::Cipher::Khazad. We're talking symmetric cipher Khazad, key size: 128 bits. Let's get into it 💅

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✨ NAME ✨

Crypt::Cipher::Khazad - Symmetric cipher Khazad, key size: 128 bits

🎀 SYNOPSIS 🎀

Two examples, bestie. Example 1 uses Crypt::Mode::CBC:

### 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('Khazad');
my $ciphertext = $cbc->encrypt("secret data", $key, $iv);

Example 2 is the slower route with Crypt::CBC and Crypt::Cipher::Khazad:

### example 2 (slower)
use Crypt::CBC;
use Crypt::Cipher::Khazad;

my $key = '...'; # length must be a valid key size for this cipher
my $iv = '...';  # 16 bytes
my $cbc = Crypt::CBC->new( -cipher=>'Cipher::Khazad', -key=>$key, -iv=>$iv );
my $ciphertext = $cbc->encrypt("secret data");

🌸 DESCRIPTION 🌸

This module implements the Khazad cipher. Its interface is compatible with Crypt::CBC.

Note, bestie: 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). No cap 🧢

🦋 METHODS 🦋

Unless noted otherwise, assume $c is an existing cipher object created via new, for example:

my $c = Crypt::Cipher::Khazad->new($key);

✨ new ✨

my $c = Crypt::Cipher::Khazad->new($key);
#or
my $c = Crypt::Cipher::Khazad->new($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)

So $key is a binary string of an accepted length — peep keysize, min_keysize, and max_keysize for the deets. $rounds is an optional integer for the number of rounds, if the cipher supports it; it croaks on an invalid value. Slay 🔥

🔥 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). Periodt 💅

💧 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). Iconic 🫶

👑 keysize 👑

Just an alias for max_keysize.

$c->keysize;
#or
Crypt::Cipher::Khazad->keysize;
#or
Crypt::Cipher::Khazad::keysize;

🎀 blocksize 🎀

Returns the cipher block size (in bytes).

$c->blocksize;
#or
Crypt::Cipher::Khazad->blocksize;
#or
Crypt::Cipher::Khazad::blocksize;

💜 max_keysize 💜

Returns the maximum key size (in bytes).

$c->max_keysize;
#or
Crypt::Cipher::Khazad->max_keysize;
#or
Crypt::Cipher::Khazad::max_keysize;

🌈 min_keysize 🌈

Returns the minimum key size (in bytes).

$c->min_keysize;
#or
Crypt::Cipher::Khazad->min_keysize;
#or
Crypt::Cipher::Khazad::min_keysize;

⭐ default_rounds ⭐

Returns the cipher's default round count.

$c->default_rounds;
#or
Crypt::Cipher::Khazad->default_rounds;
#or
Crypt::Cipher::Khazad::default_rounds;

🌟 SEE ALSO 🌟

• CryptX, Crypt::Cipher
• https://en.wikipedia.org/wiki/KHAZAD

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okay that's the whole page bestie! it's from perl v5.42.0, dated 2026-05-11, and it's the Crypt::...::Khazad(3) manpage 💅🫶