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🔐 Crypt::DES_EDE3(3pm) — Triple-DES EDE Encryption/Decryption

📛 NAME

Crypt::DES_EDE3 — Triple-DES EDE encryption/decryption

🚀 Quick Reference

Use Case	Command	Description
🔑 Create a new Triple-DES cipher	Crypt::DES_EDE3->new($key)	Creates an object with a 24‑byte key for DES‑EDE3
🔒 Encrypt a block	$ede3->encrypt($block)	Encrypts an 8‑byte block (encrypt‑decrypt‑encrypt)
🔓 Decrypt a block	$ede3->decrypt($block)	Decrypts an 8‑byte block (decrypt‑encrypt‑decrypt)
📏 Get block size	$ede3->blocksize	Returns 8 (bytes)
📐 Get key size	$ede3->keysize	Returns 24 (bytes)
🔗 Use with CBC mode	Crypt::CBC->new(-cipher => 'DES_EDE3', ...)	Enables DES‑EDE3‑CBC (outer CBC) for arbitrary‑length data

📝 SYNOPSIS

use Crypt::DES_EDE3;
my $ede3 = Crypt::DES_EDE3->new($key);
$ede3->encrypt($block);

📖 DESCRIPTION

Crypt::DES_EDE3 implements DES‑EDE3 encryption. This is triple‑DES encryption where an encrypt operation is encrypt‑decrypt‑encrypt, and decrypt is decrypt‑encrypt‑decrypt. This implementation uses Crypt::DES to do its dirty DES work, and simply provides a wrapper around that module: setting up the individual DES ciphers, initializing the keys, and performing the encryption/decryption steps.

🔑 DES‑EDE3 encryption requires a key size of 24 bytes.

💡 You're probably best off not using this module directly, as the encrypt and decrypt methods expect 8‑octet blocks. You might want to use the module in conjunction with Crypt::CBC, for example. This would be DES‑EDE3‑CBC, or triple‑DES in outer CBC mode.

⚙️ USAGE

🔑 $ede3 = Crypt::DES_EDE3->new($key)

Creates a new Crypt::DES_EDE3 object (really, a collection of three DES ciphers), and initializes each cipher with part of $key, which should be at least 24 bytes. If it's longer than 24 bytes, the extra bytes will be ignored.

📦 Returns the new object.

🔒 $ede3->encrypt($block)

Encrypts an 8‑byte block of data $block using the three DES ciphers in an encrypt‑decrypt‑encrypt operation.

📦 Returns the encrypted block.

🔓 $ede3->decrypt($block)

Decrypts an 8‑byte block of data $block using the three DES ciphers in a decrypt‑encrypt‑decrypt operation.

📦 Returns the decrypted block.

📏 $ede3->blocksize

Returns the block size (8).

📐 $ede3->keysize

Returns the key size (24).

📜 LICENSE

Crypt::DES_EDE3 is free software; you may redistribute it and/or modify it under the same terms as Perl itself.

👤 AUTHOR & COPYRIGHTS

Crypt::DES_EDE3 is Copyright 2001 Benjamin Trott, ben AT rhumba.com. All rights reserved.

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perl v5.32.0 — 2020-12-31 — Crypt::DES_EDE3(3pm)

🔐 Crypt::DES_EDE3(3pm) — Triple-DES EDE Encryption/Decryption 📛 NAME 🚀 Quick Reference 📝 SYNOPSIS 📖 DESCRIPTION ⚙️ USAGE 📜 LICENSE 👤 AUTHOR & COPYRIGHTS