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Re: Another Crypto Programming Challenge

From owl <owl@rooftop.invalid>
Newsgroups comp.os.linux.advocacy
Subject Re: Another Crypto Programming Challenge
Date 2018-09-04 15:05 +0000
Organization O.W.L.
Message-ID <st9b8003a.glay93@rooftop.invalid> (permalink)
References <141b6d57-9a26-4315-9817-1ff67b98ae19@googlegroups.com> <s9b0030aga.ay@rooftop.invalid> <ec923c34-f214-477a-b524-a78fc897aa34@googlegroups.com>

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fr314159@gmail.com wrote:
> On Tuesday, September 4, 2018 at 9:59:02 AM UTC-4, owl wrote:
> 
>> 
>> SYNOPSIS
>>        steghide command [ arguments ]
>>
> 
> Steghide uses a whacko, weirdo algorithm and it requires a passphrase.
> It also doesn't handle TIFF files.
> 
> The challenge method is simple and foolproof.
> 
> 

STEPIC(1)                        User Commands                       STEPIC(1)

NAME
       stepic - Python image steganography

SYNOPSIS
       stepic [options]

DESCRIPTION
       Steganographically  hide  data  in a bitmap-style image, or read hidden
       data from an image


anon@lowtide:~/code/stego$ ls -l
total 756
-rw-r--r-- 1 anon anon 768334 Sep  4 10:36 fab.tiff
-rw-r--r-- 1 anon anon     33 Sep  4 10:57 hidden.txt
anon@lowtide:~/code/stego$ identify fab.tiff
fab.tiff TIFF 640x400 640x400+0+0 8-bit sRGB 768KB 0.000u 0:00.000
anon@lowtide:~/code/stego$ cat hidden.txt
We don't cuss.  We have manners.
anon@lowtide:~/code/stego$ stepic -e -i fab.tiff -t hidden.txt -o blah.tiff
anon@lowtide:~/code/stego$ identify blah.tiff
blah.tiff TIFF 640x400 640x400+0+0 8-bit sRGB 768KB 0.000u 0:00.000
anon@lowtide:~/code/stego$ ls -l
total 1508
-rw-r--r-- 1 anon anon 768192 Sep  4 10:58 blah.tiff
-rw-r--r-- 1 anon anon 768334 Sep  4 10:36 fab.tiff
-rw-r--r-- 1 anon anon     33 Sep  4 10:57 hidden.txt
anon@lowtide:~/code/stego$ stepic -d -i blah.tiff -o gotit.txt
anon@lowtide:~/code/stego$ cat gotit.txt
We don't cuss.  We have manners.
anon@lowtide:~/code/stego$

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Another Crypto Programming Challenge fr314159@gmail.com - 2018-09-04 06:45 -0700
  Re: Another Crypto Programming Challenge owl <owl@rooftop.invalid> - 2018-09-04 13:59 +0000
    Re: Another Crypto Programming Challenge fr314159@gmail.com - 2018-09-04 07:25 -0700
      Re: Another Crypto Programming Challenge owl <owl@rooftop.invalid> - 2018-09-04 15:05 +0000
        Re: Another Crypto Programming Challenge fr314159@gmail.com - 2018-09-04 08:30 -0700
          Re: Another Crypto Programming Challenge Steve Carroll <fretwizzer@gmail.com> - 2018-09-04 08:47 -0700
            Re: Another Crypto Programming Challenge Steve Carroll <fretwizzer@gmail.com> - 2018-09-04 09:00 -0700
              Re: Another Crypto Programming Challenge owl <owl@rooftop.invalid> - 2018-09-04 16:21 +0000
                Re: Another Crypto Programming Challenge Steve Carroll <fretwizzer@gmail.com> - 2018-09-04 09:26 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <frelwizzen@gmail.com> - 2018-09-05 02:44 -0700
                Re: Another Crypto Programming Challenge fr314159@gmail.com - 2018-09-04 09:58 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <frelwizzen@gmail.com> - 2018-09-04 10:37 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <frelwizzen@gmail.com> - 2018-09-05 05:06 -0700
                Re: Another Crypto Programming Challenge owl <owl@rooftop.invalid> - 2018-09-05 16:37 +0000
                Re: Another Crypto Programming Challenge Steve Carroll <fretwizzer@gmail.com> - 2018-09-05 10:03 -0700
                Re: Another Crypto Programming Challenge fr314159@gmail.com - 2018-09-05 10:26 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <fretwizzer@gmail.com> - 2018-09-05 09:43 -0700
                Re: Another Crypto Programming Challenge fr314159@gmail.com - 2018-09-05 10:36 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <fretwizzer@gmail.com> - 2018-09-05 10:45 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <frelwizzen@gmail.com> - 2018-09-05 11:02 -0700
                Re: Another Crypto Programming Challenge fr314159@gmail.com - 2018-09-05 12:35 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <frelwizzen@gmail.com> - 2018-09-05 12:52 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <fretwizzer@gmail.com> - 2018-09-05 14:50 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <frelwizzen@gmail.com> - 2018-09-05 15:13 -0700
                Re: Another Crypto Programming Challenge "F. Russell" <fr@random.info> - 2018-09-05 22:34 +0000
                Re: Another Crypto Programming Challenge Steve Carroll <frelwizzen@gmail.com> - 2018-09-05 15:59 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <frelwizzen@gmail.com> - 2018-09-06 00:33 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <frelwizzen@gmail.com> - 2018-09-06 00:02 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <fretwizzer@gmail.com> - 2018-09-06 09:35 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <frelwizzen@gmail.com> - 2018-09-06 09:55 -0700
                Re: Another Crypto Programming Challenge chrisv <chrisv@nospam.invalid> - 2018-09-05 12:52 -0500
                Re: Another Crypto Programming Challenge Steve Carroll <frelwizzen@gmail.com> - 2018-09-05 11:18 -0700
                Re: Another Crypto Programming Challenge fr314159@gmail.com - 2018-09-05 11:23 -0700
                Re: Another Crypto Programming Challenge fr314159@gmail.com - 2018-09-05 11:38 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <frelwizzen@gmail.com> - 2018-09-05 11:49 -0700
                Re: Another Crypto Programming Challenge Steve Carroll <frelwizzen@gmail.com> - 2018-09-05 12:04 -0700
                Re: Another Crypto Programming Challenge fr314159@gmail.com - 2018-09-05 11:48 -0700
                Re: Another Crypto Programming Challenge Snit <usenet@gallopinginsanity.com> - 2018-09-05 21:28 -0700
        Re: Another Crypto Programming Challenge Steve Carroll <frelwizzen@gmail.com> - 2018-09-04 08:47 -0700

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