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SabreHex

by TStanley (Canon)
on May 08, 2001 at 21:50 UTC ( #78911=sourcecode: print w/ replies, xml ) Need Help??

Category: Cryptography
Author/Contact Info Thomas Stanley
Description: An encryption/decryption program using chromatic's Crypt::CipherSaber module.
I also included an option to output the encrypted material in a hexidecimal format.
#!/usr/bin/perl -w
############################
##   Name: SabreHex       ##
## Author: Thomas Stanley ##
############################
use strict;
use Crypt::CipherSaber;
use Term::ReadKey;
use Getopt::Std;
use vars qw/$opt_d $opt_e $opt_h $opt_o $opt_v/;
 
my $infile;
my $outfile;
 
system('clear');
##########################
getopts('vhd:e:o:');
if($opt_h and $opt_d and $opt_o){  
  $infile = $opt_d;
  $outfile = $opt_o;
  &DECRYPT($infile,$outfile);
}elsif($opt_h and $opt_e and $opt_o){
  $infile = $opt_e;
  $outfile = $opt_o;
  &ENCRYPT($infile,$outfile);
}elsif($opt_d and $opt_o){
  $infile = $opt_d;
  $outfile = $opt_o;
  &DECRYPTNOHEX($infile,$outfile);
}elsif($opt_e and $opt_o){
  $infile = $opt_e;
  $outfile = $opt_o;
  &ENCRYPTNOHEX($infile,$outfile);
}elsif($opt_v){
  die"SabreHex Version 1.06 by Thomas Stanley\n";
}else{
  die"\n\tUsage:  SabreHex [hdeov] [filename]\n\t\t
            -h: Hex Mode\n\t\t
            -d: Decrypt [filename]\n\t\t
            -e: Encrypt [filename]\n\t\t
            -o: Outputfile [filename]\n\t\t
            -v: Version\n";
}
########################### 
sub DECRYPT(){
  my $inputfile = shift;
  my $outputfile = shift;
  print"\n";
 
  print"Please enter the key phrase to decode the file (Input will be 
+hidden): ";
  ReadMode 2;
  my $key = <STDIN>;
  ReadMode 0;
  chomp($key);
  print"\n";
 
  my $SABRE = new Crypt::CipherSaber($key);
 
  open (FH1,"$inputfile")||die "Can't open $inputfile : $!\n";
 
  my $encoded = <FH1>;
 
  $encoded = Dehexed($encoded);
 
  my $decoded = $SABRE->decrypt($encoded);
 
  open (FH2,">$outputfile")||die "Can't open $outputfile : $!\n";
  print FH2 $decoded;
 
  close FH1;
  close FH2;
 
  unlink $inputfile;
}
 
sub ENCRYPT(){
  my $inputfile = shift;
  my $outputfile = shift;
  print"\n";
 
  print"Enter the key phrase to encrypt the file (Input will be hidden
+): ";
  ReadMode 2;
  my $key = <STDIN>;
  ReadMode 0;
  chomp($key);
  print"\n";
 
  my $SABRE = new Crypt::CipherSaber($key);
 
  open(FH1,"$inputfile")||die "Can't open $inputfile: $!\n";
 
  my @text = <FH1>;
  my $text;
  my $l=@text;
  for(my $x=0;$x<$l;$x++){
    $text.=$text[$x];
  }
  my $encrypted = $SABRE->encrypt($text);
 
  $encrypted = Hexed($encrypted);
 
  open(FH2,">$outputfile")||die "Can't open $outputfile: $!\n";
  print FH2 $encrypted;
 
  close FH1;
  close FH2;
 
  unlink $inputfile;
}
 
sub Hexed(){
  my $encrypted = shift;
  my @conversion = split //,$encrypted;
  my $elements = @conversion;
  my $num;
  my $hexed;
 
  for(my $x=0;$x<$elements;$x++){
    $num = ord $conversion[$x];
    $conversion[$x] = sprintf("%02x",$num);
  }
 
  for(my $y=0;$y<$elements;$y++){
    $hexed .= $conversion[$y];
  }
 
  return $hexed;
}

sub Dehexed(){
  my $encrypted = shift;
  my $l = length $encrypted;
  my @conversion=();
  my $dehexed;
  my $c = $l/2;
  my $x = 0;
 
  for(my $y=0;$y<$c;$y++){
    $conversion[$y] = substr($encrypted,$x,2);
    $x+=2;
  }
 
  my $len = @conversion;
 
  for(my $z=0;$z<$len;$z++){
    $dehexed .= chr hex $conversion[$z];
  }
 
  return $dehexed;
}
 
 
sub DECRYPTNOHEX(){
  my $inputfile = shift;
  my $outputfile = shift;
  print"\n";
 
  print"Please enter the key phrase to decode the file (Input will be 
+hidden): ";
  ReadMode 2;
  my $key = <STDIN>;
  ReadMode 0;
  chomp($key);
  print"\n";
 
  my $SABRE = new Crypt::CipherSaber($key);
 
  open (FH1,"$inputfile")||die "Can't open $inputfile : $!\n";
 
  my $encoded = <FH1>;
 
  my $decoded = $SABRE->decrypt($encoded);
 
  open (FH2,">$outputfile")||die "Can't open $outputfile : $!\n";
  print FH2 $decoded;
 
  close FH1;
  close FH2;

  unlink $inputfile;
}
 
sub ENCRYPTNOHEX(){
  my $inputfile = shift;
  my $outputfile = shift;
  print"\n";
 
  print"Enter the key phrase to encrypt the file (Input will be hidden
+): ";
  ReadMode 2;
  my $key = <STDIN>;
  ReadMode 0;
  chomp($key);
  print"\n";
 
  my $SABRE = new Crypt::CipherSaber($key);
 
  open(FH1,"$inputfile")||die "Can't open $inputfile: $!\n";
 
  my @text = <FH1>;
  my $l=@text;
  my $text;
  
  for(my $x=0;$x<$l;$x++){
    $text.=$text[$x];
  }

  my $encrypted = $SABRE->encrypt($text);
 
  open(FH2,">$outputfile")||die "Can't open $outputfile: $!\n";
  print FH2 $encrypted;
 
  close FH1;
  close FH2;
 
  unlink $inputfile;
} 

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