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Crypt::IDEA.3pm
Langue: en
Version: 2005-12-08 (mandriva - 22/10/07)
Section: 3 (Bibliothèques de fonctions)
NAME
IDEA - Perl interface to IDEA block cipherSYNOPSIS
use Crypt::IDEA;
DESCRIPTION
This perl extension is an implementation of the IDEA block cipher algorithm. The module implements the Crypt::BlockCipher interface, which has the following methods- blocksize =item keysize =item encrypt =item decrypt
FUNCTIONS
- blocksize
- Returns the size (in bytes) of the block cipher.
- keysize
- Returns the size (in bytes) of the key.
- new
-
my $cipher = new IDEA $key;
This creates a new IDEA BlockCipher object, using $key, where $key is a key of "keysize()" bytes.
- encrypt
-
my $cipher = new IDEA $key; my $ciphertext = $cipher->encrypt($plaintext);
This function encrypts $plaintext and returns the $ciphertext where $plaintext and $ciphertext should be of "blocksize()" bytes.
- decrypt
-
my $cipher = new IDEA $key; my $plaintext = $cipher->decrypt($ciphertext);
This function decrypts $ciphertext and returns the $plaintext where $plaintext and $ciphertext should be of "blocksize()" bytes.
EXAMPLE
my $key = pack("H32", "0123456789ABCDEF0123456789ABCDEF"); my $cipher = new IDEA $key; my $ciphertext = $cipher->encrypt("plaintex"); # NB - 8 bytes print unpack("H16", $ciphertext), "\n";
SEE ALSO
Crypt::CBD, Crypt::DES, Crypt::BlowfishBruce Schneier, Applied Cryptography, 1995, Second Edition, published by John Wiley & Sons, Inc.
COPYRIGHT
This implementation is copyright Systemics Ltd ( http://www.systemics.com/ ).The IDEA algorithm is patented in Europe and the United States by Ascom-Tech AG.
Module altered between 1999 and 2005 to allow added functionality with perl -MCPAN, Changes by Dave Paris (edited lib paths, endian issues, new tests).
Thank you to contributors for endian patches and new test suite!
Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre