Crypt::OpenSSL::AES(3)User Contributed Perl DocumentatioCrypt::OpenSSL::AES(3)NAMECrypt::OpenSSL::AES - A Perl wrapper around OpenSSL's AES library
SYNOPSIS
use Crypt::OpenSSL::AES;
my $cipher = new Crypt::OpenSSL::AES($key);
$encrypted = $cipher->encrypt($plaintext)
$decrypted = $cipher->decrypt($encrypted)
DESCRIPTION
This module implements a wrapper around OpenSSL. Specifically, it
wraps the methods related to the US Government's Advanced Encryption
Standard (the Rijndael algorithm).
This module is compatible with Crypt::CBC (and likely other modules
that utilize a block cipher to make a stream cipher).
This module is an alternative to the implementation provided by
Crypt::Rijndael which implements AES itself. In contrast, this module
is simply a wrapper around the OpenSSL library.
The Crypt::Rijndael implementation seems to produce inaccurate results
on 64-bit x86 machines. By using OpenSSL, this module aims to avoid
architecture specific problems, allowing the OpenSSL maintainers to
overcome such issues.
$cipher->encrypt($data)
Encrypt data. The size of $data must be exactly "blocksize" in
length (16 bytes), otherwise this function will croak.
You should use Crypt::CBC or something similar to encrypt/decrypt
data of arbitrary lengths.
$cipher->decrypt($data)
Decrypts $data. The size of $data must be exactly "blocksize" in
length (16 bytes), otherwise this function will croak.
You should use Crypt::CBC or something similar to encrypt/decrypt
data of arbitrary lengths.
keysize
This method is used by Crypt::CBC to verify the key length. This
module actually supports key lengths of 16, 24, and 32 bytes, but
this method always returns 32 for Crypt::CBC's sake.
blocksize
This method is used by Crypt::CBC to check the block size. The
blocksize for AES is always 16 bytes.
USE WITH CRYPT::CBC
use Crypt::CBC
$cipher = Crypt::CBC->new(
-key => $key,
-cipher => "Crypt::OpenSSL::AES"
);
$encrypted = $cipher->encrypt($plaintext)
$decrypted = $cipher->decrypt($encrypted)
SEE ALSO
Crypt::CBC
http://www.openssl.org/
http://en.wikipedia.org/wiki/Advanced_Encryption_Standard
http://www.csrc.nist.gov/encryption/aes/
BUGS
Need more (and better) test cases.
AUTHOR
Tolga Tarhan, <cpan at ttar dot org>
The US Government's Advanced Encryption Standard is the Rijndael
Algorithm and was developed by Vincent Rijmen and Joan Daemen.
COPYRIGHT AND LICENSE
Copyright (C) 2006 DelTel, Inc.
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself, either Perl version 5.8.5 or, at
your option, any later version of Perl 5 you may have available.
perl v5.14.1 2007-11-16 Crypt::OpenSSL::AES(3)
