Re: [Christmas Challenge 2024] Crack Doppelkastenschluessel-Hex

Chris M. Thomasson wrote:

On 12/20/2024 12:51 PM, Stefan Claas wrote:

Perhaps we need a larger amount of ciphertext?

 
That would make cryptanalysis easier, right?

 
I think so. Depends on the algorithm. If it's secure than perhaps no so
much... The interesting aspect of SCOS is that it's not secure at all.

Well, only one key is used and it is a double square cipher, i.e. it is
basically a monoalphabetic bigraphic bipartite substitution, according
to Wikipedia.

BTW. For drawing the winners, should they been drawn from
a random pool of entries, or by first come first serve?
 

 
That is up to you! :^)

O.k. :-) Should there be many entries, I choose random and if
it's only a couple of entrie by first come first serve.

--
Regards
Stefan