Crypt::...R_SK128(3)

🌸 NAME 🌸

Okay so this page is Crypt::...R_SK128(3), bestie, and it lives in the User Contributed Perl Documentation zone. It’s all about Crypt::Cipher::SAFER_SK128 — the Symmetric cipher SAFER_SK128, with key size: 128 bits. 💅

✨ SYNOPSIS ✨

Two whole examples, no cap — pick your vibe:

### 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('SAFER_SK128');
my $ciphertext = $cbc->encrypt("secret data", $key, $iv);

### example 2 (slower)
use Crypt::CBC;
use Crypt::Cipher::SAFER_SK128;

my $key = '...'; # length must be a valid key size for this cipher
my $iv = '...';  # 16 bytes
my $cbc = Crypt::CBC->new( -cipher=>'Cipher::SAFER_SK128', -key=>$key, -iv=>$iv );
my $ciphertext = $cbc->encrypt("secret data");

🦋 DESCRIPTION 🦋

This module implements the SAFER_SK128 cipher, and its interface is compatible with Crypt::CBC. Slay. ✨

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). No cap, that part matters.

🎀 METHODS 🎀

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

my $c = Crypt::Cipher::SAFER_SK128->new($key);

🍓 new

my $c = Crypt::Cipher::SAFER_SK128->new($key);
#or
my $c = Crypt::Cipher::SAFER_SK128->new($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] key of an accepted length — check keysize, min_keysize, max_keysize if you need the receipts. And $rounds is an [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. Iconic behavior, honestly.

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. Same energy, reverse direction.

my $plaintext = $c->decrypt($ciphertext);

Returns the decrypted block as a binary string (raw bytes). 💜

👑 keysize

Just an alias for max_keysize. Literally that.

$c->keysize;
#or
Crypt::Cipher::SAFER_SK128->keysize;
#or
Crypt::Cipher::SAFER_SK128::keysize;

🌸 blocksize

Returns the cipher block size (in bytes).

$c->blocksize;
#or
Crypt::Cipher::SAFER_SK128->blocksize;
#or
Crypt::Cipher::SAFER_SK128::blocksize;

🦋 max_keysize

Returns the maximum key size (in bytes).

$c->max_keysize;
#or
Crypt::Cipher::SAFER_SK128->max_keysize;
#or
Crypt::Cipher::SAFER_SK128::max_keysize;

🎀 min_keysize

Returns the minimum key size (in bytes).

$c->min_keysize;
#or
Crypt::Cipher::SAFER_SK128->min_keysize;
#or
Crypt::Cipher::SAFER_SK128::min_keysize;

✨ default_rounds

Returns the cipher's default round count.

$c->default_rounds;
#or
Crypt::Cipher::SAFER_SK128->default_rounds;
#or
Crypt::Cipher::SAFER_SK128::default_rounds;

💖 SEE ALSO 💖

• CryptX, Crypt::Cipher
• <https://en.wikipedia.org/wiki/SAFER>

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kisses bestie, this page came from perl v5.42.0 and is dated 2026-05-11 💅🫶✨