NAME

Crypt::NULL - NULL Encryption Algorithm

SYNOPSIS

use Crypt::NULL;

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

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

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

DESCRIPTION

The NULL Encryption Algorithm is a symmetric block cipher described in RFC 2410 by Rob Glenn and Stephen Kent.

This module implements NULL encryption. It supports the Crypt::CBC interface, with the following functions.

Functions

blocksize

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

keysize

Returns the size (in bytes) of the key (16, in this case).

new($key)

This creates a new Crypt::NULL object with the specified key.

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::TEA, Crypt::Twofish

AUTHOR

Abhijit Menon-Sen <ams@wiw.org>

Copyright 2001 Abhijit Menon-Sen. All rights reserved.

This software is distributed under the terms of the Artistic License <URL:http://ams.wiw.org/code/artistic.txt>.