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Challenge "Molehunt (Part 3/3)"  

  By: admin on Oct. 22, 2010, 4:07 p.m.

This is the final part of a 3-part challenge regarding the classical transposition. You can solve this challenge with pen and paper or by writing a small computer program. In this challenge, the plaintext was first encrypted with a monoalphabetic substitution cipher. After that, the result was encrypted a second time with the irregular columnar transposition to create the final ciphertext. The used key length for the columnar tranposition has less than 10 characters.
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 Last edited by: admin on Oct. 31, 2021, 2:54 a.m., edited 1 time in total.

Re: Challenge  

  By: vexilla72 on Oct. 25, 2016, 8:20 a.m.

Hello,

The text is really in german ? or in english ? or in another language ?

Thanks.
vexilla72

Challenge Molehunt (Part 3/3)  

  By: Theofanidis on Oct. 25, 2016, 7:25 p.m.

Dear vexilla72,

The language of the text in Part 3 is the same as the language of the texts in Parts 1 and 2…

Best Regards
George Theofanidis

Re: Challenge  

  By: itnomad on Feb. 18, 2021, 7:42 p.m.

Now this was an especially fun one, but I wonder if someone actually solved this with pen & paper :-)

Alex.

Re: Challenge  

  By: silva on Feb. 18, 2021, 8:58 p.m.

Hi Alex,
Yes, but it depends on how literally you mean with pen and paper.

I solved it without writing a program, but with Excel, several online tools (among others a transposition tool which revealed some plaintext) and finally indeed with pen & paper.

So it is possible [HTML_REMOVED] Cheers, Silva

Re: Challenge  

  By: itnomad on Feb. 19, 2021, 11:20 a.m.

Hi Alex,
Yes, but it depends on how literally you mean with pen and paper.

I solved it without writing a program, but with Excel, several online tools (among others a transposition tool which revealed some plaintext) and finally indeed with pen & paper.

So it is possible [HTML_REMOVED] Cheers, Silva

Hehe, Excel, not too bad :-) I exploited the fact that a mono-alphabetic substitution retains the 'pattern' of a word, such as 'HELLO' -> 'DTIIL'. If you make some guesses about a crib and then toy around with the transpositions, you can find these patterns before even starting to work on the substitution.

Alex.


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