NAME

Crypt::GOST - The GOST Encryption Algorithm

SYNOPSIS

use Crypt::GOST;

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

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

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

DESCRIPTION

GOST 28147-89 is a 64-bit symmetric block cipher with a 256-bit key developed in the former Soviet Union. Some information on it is available at <URL:http://vipul.net/gost/>.

This module implements GOST encryption. It supports the Crypt::CBC interface, with the functions described below. It also provides an interface that is backwards-compatible with Crypt::GOST 0.41, but its use in new code is discouraged.

Functions

blocksize: Returns the size (in bytes) of the block (8, in this case).
keysize: Returns the size (in bytes) of the key (32, in this case).
new($key): This creates a new Crypt::GOST object with the specified key.
encrypt($data): Encrypts blocksize() bytes of $data and returns the corresponding ciphertext.
decrypt($data): Decrypts blocksize() bytes of $data and returns the corresponding plaintext.

ACKNOWLEDGEMENTS

Vipul Ved Prakash: For writing Crypt::GOST 0.41, and reviewing the current version.

AUTHOR

Abhijit Menon-Sen <ams@wiw.org>