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package CTK::Crypt::TCD04; |
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use strict; |
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use utf8; |
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=encoding utf-8 |
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=head1 NAME |
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CTK::Crypt::TCD04 - TCD04 Crypt backend |
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=head1 VERSION |
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Version 1.02 |
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=head1 SYNOPSIS |
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use CTK::Crypt::TCD04; |
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my $tcd04 = CTK::Crypt::TCD04->new; |
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my $code = $tcd04->tcd04c('u'); # 1 char |
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my $decode = $tcd04->tcd04d($code); # 1 word |
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print $tcd04->decrypt( $tcd04->encrypt( 'Hello, World!' ) ); |
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=head1 DESCRIPTION |
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TCD04 Crypt backend. Simple cryptografy's algorythm of D&D Corporation |
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=head1 METHODS |
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=over 8 |
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=item B |
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my $tcd04 = CTK::Crypt::TCD04->new; |
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=item B |
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$tcd04->decrypt( $tcd04->encrypt( 'Hello, World!' ) ); |
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=item B |
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my $words = $tcd04->encrypt( 'Hello, World!' ); |
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=item B |
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my $code = $tcd04->tcd04c('u'); # 1 char |
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=item B |
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my $decode = $tcd04->tcd04d($code); # 1 word |
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=back |
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=head1 HISTORY |
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=over 8 |
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=item B<1.00 / 1.00.0001 08.01.2007> |
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Init version on base mod_main 1.00.0002 |
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=item B<1.01 Fri 26 Apr 12:05:51 MSK 2019> |
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Was moved from MPMinus project |
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=back |
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See C file |
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=head1 TO DO |
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See C file |
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=head1 BUGS |
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* none noted |
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=head1 SEE ALSO |
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L, L |
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=head1 AUTHOR |
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Serż Minus (Sergey Lepenkov) L Eabalama@cpan.orgE |
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=head1 COPYRIGHT |
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Copyright (C) 1998-2022 D&D Corporation. All Rights Reserved |
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=head1 LICENSE |
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This program is free software; you can redistribute it and/or |
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modify it under the same terms as Perl itself. |
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See C file and L |
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=cut |
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use vars qw/ $VERSION /; |
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$VERSION = 1.02; |
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sub new { |
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my $class = shift; |
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my $self = bless {}, $class; |
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return $self |
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} |
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sub encrypt { |
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my $self = shift; |
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my $string = shift; |
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return '' if length $string == 0; |
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return join "",map {$_=$self->tcd04c($_)} split //,$string; |
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} |
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sub decrypt { |
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my $self = shift; |
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my $string = shift; |
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return '' if length $string == 0; |
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my $ch2 =''; |
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my $outstr = ''; |
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foreach (split //,$string) { |
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$ch2.=$_; |
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if (length($ch2) == 2) { |
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$outstr.=$self->tcd04d($ch2); |
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$ch2=''; |
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} |
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} |
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return $outstr; |
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} |
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sub tcd04c { |
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my $self = shift; |
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my $ch = shift; |
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return '' if length $ch != 1; |
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my $kod1 = ord($ch)>>4; |
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my $kod2 = (ord($ch)&(2**4-1)); |
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return chr($kod1>0?int(rand 16)*15 + $kod1:0).chr($kod2>0?int(rand 16)*15 + $kod2:0); |
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} |
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sub tcd04d { |
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my $self = shift; |
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my $ch2 = shift; |
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return '' if length $ch2 != 2; |
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my ($kod1,$kod2) = map {(((ord($_)%15)==0)&&ord($_)>0)?15:ord($_)%15} split //,$ch2; |
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return chr($kod1<<4|$kod2); #return sprintf "%X", $kod1<<4|$kod2; |
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} |
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1; |
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__END__ |