info > Crypt::Cipher::AES

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📛 NAME

Crypt::Cipher::AES – Symmetric cipher AES (aka Rijndael), key size: 128/192/256 bits

🚀 Quick Reference

Use Case	Command	Description
Encrypt with CBC (fast)	use Crypt::Mode::CBC; my $cbc = Crypt::Mode::CBC->new('AES'); my $ciphertext = $cbc->encrypt("secret", $key, $iv);	Encrypt data using AES‑CBC with a 16‑byte IV and a valid key size.
Encrypt with CBC (slower, Crypt::CBC compat)	use Crypt::CBC; use Crypt::Cipher::AES; my $cbc = Crypt::CBC->new(-cipher=>'Cipher::AES', -key=>$key, -iv=>$iv); my $ciphertext = $cbc->encrypt("secret");	Alternative interface; uses Crypt::CBC for full block‑mode handling.
Direct block encrypt	my $c = Crypt::Cipher::AES->new($key); my $ciphertext = $c->encrypt($plaintext);	Encrypt a single 16‑byte block. For real data you must use a block mode.
Check supported key sizes	Crypt::Cipher::AES->keysize;	Returns valid key lengths (128/192/256 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('AES');
my $ciphertext = $cbc->encrypt("secret data", $key, $iv);

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

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

📘 DESCRIPTION

This module implements the AES 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

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

🔒 encrypt

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

🔓 decrypt

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

📏 keysize

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

🧱 blocksize

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

📐 max_keysize

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

📐 min_keysize

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

🔄 default_rounds

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

🔗 SEE ALSO

• Crypt::Cipher (CryptX)
• https://en.wikipedia.org/wiki/Advanced_Encryption_Standard

perl v5.34.0 – 2022-02-06 – Crypt::Cipher::AES(3pm)

📛 NAME 🚀 Quick Reference 📖 SYNOPSIS 📘 DESCRIPTION 🔧 METHODS 🔗 SEE ALSO