Re: xorpng

Chris M. Thomasson wrote:

On 1/4/2025 1:13 PM, Chris M. Thomasson wrote:

On 1/4/2025 1:08 PM, Stefan Claas wrote:

Chris M. Thomasson wrote:

On 1/4/2025 10:06 AM, Stefan Claas wrote:

Chris M. Thomasson wrote:

On 1/3/2025 7:13 AM, Stefan Claas wrote:

Chris M. Thomasson wrote:

On 12/31/2024 5:00 PM, Stefan Claas wrote:

echo 'Happy News Year 2025' | ternary
2112102022020111101010222211010022112012102120110020100021120220
10000111010121200020221000211000220022020
 
$ echo 'Happy News Year 2025' | ternary | ternary -d
Happy News Year 2025
 
(My program works with binary data as well.)
 

 
Side note, try to get 3-ary roots from the following... It's not
that
hard but its fun wrt the results one can reap from it:
 
https://paulbourke.org/fractals/multijulia

 
Nice, but I do no longer do Computer Graphics.
 

 
In a sense, its all about discovering the n-ary roots of a complex
number... For fun, I mapped actual data to said roots... :^)
 
I think I called them nits. trits would be 3-ary, akin to ternary.

 
Since you do a lot graphics programming, have you ever thought
about encrypting images with XOR?

 
Indeed.
 
 

I just did a small test with
my xorpng program and wrote a message for you with my little
WACOM tablet and Microsoft Paint. :-)
 
I think this is a really cool (but then with a mouse instead
of a tablet) when traveling and exchanging keys in advance with
family and friends and using a Bitmessage's alt.anonymous.messages
chan and my p4bm program, in case Computers are compromised at the
destination, when not carrying one and you need no credentials and
only the keys on a Kanguru Defender 3000.
 
Here are the test images:
 
https://jmp.sh/jp1A5kvq
 
and here is my xorpng and p4bm program:
 
https://github.com/706f6c6c7578/xorpng
https://github.com/706f6c6c7578/p4bm
 

 
I am sure you are familiar with tux:
 
https://words.filippo.io/the-ecb-penguin/
 
We can encrypt that image in many different ways, indeed.

 
So, do you have an image encryption solution too?
 
Here is an analysis of my k-1.png and encrypted.png.
(one must make sure that the keys are safely stored)
 
https://jmp.sh/9fvXJvmo
 
$ python3 image_analysis.py
fourier_peaks: 194566.0
wavelet_energy: {'LL': 16776624377.0, 'LH': 1891692481.0000002, 'HL':
621089515.0000001, 'HH': 619257027.0000001}
histogram_variance: {'red': 791946.0, 'green': 792130.44, 'blue':
792015.6}
lsb_ratio: 0.9868576388888889
noise_level: 45.981313657407405
region_hash_similarity: 1.0
total_pixels: 230400
different_pixels: 227953
difference_percentage: 98.93793402777777
 

 
Well, an older one was to trying to hide the points that do not escape
in any escape time fractal. You can take any image, any file for that
matter and encrypt it. Then view the file, say with one channel of
color, say, red. Each byte is mapped to a color, 0...255 Then we can see
it in this single color. Sometimes ciphers give off some rather
interesting visual hints! :^)

 
This is using fractal images to try to encrypt plaintext:
 
http://funwithfractals.atspace.cc/ffe

Nice, but it does not decrypt the image, right, which should
be the task.

--
Regards
Stefan