NAME

       Crypt::Twofish - The Twofish Encryption Algorithm

SYNOPSIS

       use Crypt::Twofish;

       $cipher = Crypt::Twofish->new($key);

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

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

DESCRIPTION

       Twofish is a 128-bit symmetric block cipher with a variable length (128, 192, or 256-bit) key, developed
       by Counterpane Labs. It is unpatented and free for all uses, as described at
       <URL:http://www.counterpane.com/twofish.html>.

       This module implements Twofish encryption. It supports the Crypt::CBC interface, with the functions
       described below. It also provides an interface that is call-compatible with Crypt::Twofish 1.0, but its
       use in new code is strongly discouraged.

   Functions
       blocksize
           Returns the size (in bytes) of the block (16, in this case).

       keysize
           Returns  the  size (in bytes) of the key. Although the module understands 128, 192, and 256-bit keys,
           it returns 16 for compatibility with Crypt::CBC.

       new($key)
           This creates a new Crypt::Twofish object with the specified key (which should be 16, 24, or 32  bytes
           long).

       encrypt($data)
           Encrypts blocksize() bytes of $data and returns the corresponding ciphertext.

       decrypt($data)
           Decrypts blocksize() bytes of $data and returns the corresponding plaintext.

SEE ALSO

       Crypt::CBC, Crypt::Blowfish, Crypt::TEA

ACKNOWLEDGEMENTS

       Nishant Kakani
           For writing Crypt::Twofish 1.0 (this version is a complete rewrite).

       Tony Cook
           For  making  the  module  work  under Activeperl, testing on several platforms, and suggesting that I
           probe for features via %Config.

AUTHOR

       Abhijit Menon-Sen <ams@toroid.org>

       Copyright 2001 Abhijit Menon-Sen.

       This module is free software; you can redistribute it and/or modify it  under  the  same  terms  as  Perl
       itself.

perl v5.38.2                                       2024-04-01                                       Twofish(3pm)