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📛 NAME

Crypt::Cipher::Blowfish - Symmetric cipher Blowfish, key size: 64-448 bits

🚀 Quick Reference

Use Case	Command	Description
🔑 Create cipher object	$c = Crypt::Cipher::Blowfish->new($key);	Initialize cipher with key (64–448 bits); optional second argument: number of rounds
🔒 Encrypt one block	$ciphertext = $c->encrypt($plaintext);	Encrypt a single 8‑byte block
🔓 Decrypt one block	$plaintext = $c->decrypt($ciphertext);	Decrypt a single 8‑byte block
📏 Get key size	$c->keysize;	Current cipher key size (in bytes)
🧱 Get block size	$c->blocksize;	Block size (always 8 bytes)
📈 Maximum key size	$c->max_keysize;	Maximum supported key length (56 bytes / 448 bits)
📉 Minimum key size	$c->min_keysize;	Minimum supported key length (8 bytes / 64 bits)
⚙️ Default rounds	$c->default_rounds;	Default number of rounds (16)
🗂️ Full encryption (CBC)	my $cbc = Crypt::Mode::CBC->new('Blowfish'); $ciphertext = $cbc->encrypt("data", $key, $iv);	Encrypt arbitrary data using CBC mode

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

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

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

📖 DESCRIPTION

This module implements the Blowfish 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

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

🔒 encrypt

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

🔓 decrypt

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

🔑 keysize

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

🧱 blocksize

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

📈 max_keysize

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

📉 min_keysize

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

⚙️ default_rounds

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

📚 SEE ALSO

• 📦 CryptX, Crypt::Cipher
• 🌐 <https://en.wikipedia.org/wiki/Blowfish_(cipher)>

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📅 perl v5.34.0 / 2022-02-06 — Crypt::Cipher::Blowfish(3pm)

📛 NAME 🚀 Quick Reference 📝 SYNOPSIS 📖 DESCRIPTION 🔧 METHODS 📚 SEE ALSO