Crypt::IDEA 1.08

Crypt::IDEA is a Perl interface to the IDEA block cipher.

SYNOPSIS

use Crypt::IDEA;

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";

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Requirements:

· Perl