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Challenge "Lightweight Introduction to Lattices — Part 2"

Challenge "Lightweight Introduction to Lattices — Part 2"  

  By: admin on June 23, 2020, 11:05 p.m.

Lattice-based cryptography schemes are relevant for current post-quantum cryptography research. This challenge series accompanies the basic theory from a chapter of the CrypTool Book called "LIGHTWEIGHT INTRODUCTION TO LATTICES". This part of the challenge series uses vectors to hide a famous quote in modern art. Can you reveal it?
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 Last edited by: admin on Oct. 31, 2021, 2:55 a.m., edited 1 time in total.

Re: Challenge  

  By: tryone144 on June 24, 2020, 1:29 p.m.

In response to the request of previous solvers, we have adapted the verification to the extent that the solution does not have to be correctly capitalized anymore.
Furthermore, all extra whitespaces are ignored as well.

Happy solving!

Re: Challenge  

  By: Veselovský on June 25, 2020, 11:44 a.m.

Otherwise everything OK with the challenge?
I see some guys have solved the challenge… but was everything correct or did they had to overcome some errors in the challenge?
At the moment I can read two words from the picture and few incomplete words (I guess so) but nothing more.

Re: Challenge  

  By: argh on June 25, 2020, 9:24 p.m.

@Victor: Solving the challenge was straightforward, I think there are no errors. The solution format as specified in the PDF also seems to be ok, my solution was accepted at the first try.

Re: Challenge  

  By: Veselovský on June 25, 2020, 9:58 p.m.

@Victor: Solving the challenge was straightforward, I think there are no errors. The solution format as specified in the PDF also seems to be ok, my solution was accepted at the first try.

Thanks, it is always good to know everything is correct because I started to think about possible errors in the challenge like misplacement of some drawings since I only decoded two meaningful words. So either I am overlooking something simple or I am overcomplicating the things… or maybe it is me who is making errors.

Re: Challenge  

  By: Veselovský on June 28, 2020, 11:37 a.m.

So finally I solved it but…

Am I the only one who does not understand the logic?

I have not used any matrices to solve some system of equations.
I have not use any vectors - no sum of vectors, no multiplication of vectors by scalar.
All this stuff is described in the PDF of the challenge so I was trying to use this stuff somehow to solve the challenge.
For example I was trying to transform red and yellow drawings to matrices but without any success.

At the end all I used to solve the challenge was ASCII, some guesses of possible words from incomplete words and google.

Re: Challenge  

  By: mir0soft on June 30, 2020, 7:05 p.m.

So finally I solved it but…

Am I the only one who does not understand the logic?

I have not used any matrices to solve some system of equations.
I have not use any vectors - no sum of vectors, no multiplication of vectors by scalar.
All this stuff is described in the PDF of the challenge so I was trying to use this stuff somehow to solve the challenge.
For example I was trying to transform red and yellow drawings to matrices but without any success.

At the end all I used to solve the challenge was ASCII, some guesses of possible words from incomplete words and google.

There is a solid and straightforward logic behind this challenge. I believe you are over-complicating the solution. There is no need to guess possible letters or words. Once you found out the patterns involved, you will be entirely confident that you have recovered the hidden quote, without any further guessing required.

Re: Challenge  

  By: Veselovský on June 30, 2020, 10:25 p.m.

…Once you found out the patterns involved…

I think I found a logical pattern, the problem is that for few letters it does not hold. So maybe my pattern is different than the intended one. I will send you my approach and solution in PM.

Re: Challenge  

  By: sir5 on May 19, 2021, 7:33 a.m.

So finally I solved it but…

Am I the only one who does not understand the logic?

solved the challenge either … but not the logic [HTML_REMOVED]

thanks anyway


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