Mohammad S Anwar

NAME

Crypt::Trifid - Interface to the Trifid cipher.

VERSION

Version 0.10

DESCRIPTION

In classical cryptography, the trifid cipher is a cipher invented around 1901 by Felix Delastelle, which extends the concept of the bifid cipher to a third dimension, allowing each symbol to be fractionated into 3 elements instead of two.

While the bifid uses the Polybius square to turn each symbol into coordinates on a 5x5 (or 6x6) square, the trifid turns them into coordinates on a 3x3x3 cube.

As with the bifid, this is then combined with transposition to achieve diffusion.

However a higher degree of diffusion is achieved because each output symbol depends on 3 input symbols instead of two.

Thus the trifid was the first practical trigraphic substitution.

Source: Wikipedia

SYNOPSIS

    use strict; use warnings;
    use Crypt::Trifid;

    my $crypt   = Crypt::Trifid->new;
    my $message = 'TRIFID';
    my $encoded = $crypt->encode($message);
    my $decoded = $crypt->decode($encoded);

    print "Encoded message: [$encoded]\n";
    print "Decoded message: [$decoded]\n";

METHODS

encode($message)

It takes message as scalar string and returns the encoded message.

    use strict; use warnings;
    use Crypt::Trifid;

    my $crypt   = Crypt::Trifid->new;
    my $message = 'TRIFID';
    my $encoded = $crypt->encode($message);

    print "Encoded message: [$encoded]\n";

decode($encoded_message)

It takes an encoded message as scalar string and returns the decoded message.

    use strict; use warnings;
    use Crypt::Trifid;

    my $crypt   = Crypt::Trifid->new;
    my $message = 'TRIFID';
    my $encoded = $crypt->encode($message);
    my $decoded = $crypt->decode($encoded);

    print "Encoded message: [$encoded]\n";
    print "Decoded message: [$decoded]\n";

AUTHOR

Mohammad S Anwar, <mohammad.anwar at yahoo.com>

REPOSITORY

https://github.com/manwar/Crypt-Trifid

BUGS

Please report any bugs/feature requests to bug-crypt-trifid at rt.cpan.org or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Crypt-Trifid. I will be notified & then you'll automatically be notified of progress on your bug as I make changes.

SUPPORT

You can find documentation for this module with the perldoc command.

    perldoc Crypt::Trifid

You can also look for information at:

LICENSE AND COPYRIGHT

Copyright (C) 2014 - 2017 Mohammad S Anwar.

This program is free software; you can redistribute it and/or modify it under the terms of the the Artistic License (2.0). You may obtain a copy of the full license at:

http://www.perlfoundation.org/artistic_license_2_0

Any use, modification, and distribution of the Standard or Modified Versions is governed by this Artistic License.By using, modifying or distributing the Package, you accept this license. Do not use, modify, or distribute the Package, if you do not accept this license.

If your Modified Version has been derived from a Modified Version made by someone other than you,you are nevertheless required to ensure that your Modified Version complies with the requirements of this license.

This license does not grant you the right to use any trademark, service mark, tradename, or logo of the Copyright Holder.

This license includes the non-exclusive, worldwide, free-of-charge patent license to make, have made, use, offer to sell, sell, import and otherwise transfer the Package with respect to any patent claims licensable by the Copyright Holder that are necessarily infringed by the Package. If you institute patent litigation (including a cross-claim or counterclaim) against any party alleging that the Package constitutes direct or contributory patent infringement,then this Artistic License to you shall terminate on the date that such litigation is filed.

Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES. THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT PERMITTED BY YOUR LOCAL LAW. UNLESS REQUIRED BY LAW, NO COPYRIGHT HOLDER OR CONTRIBUTOR WILL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING IN ANY WAY OUT OF THE USE OF THE PACKAGE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.