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Re: Challenge "Modified Vigenère Cipher"

 On May 2, 2022, 1:15 p.m.

Hi Seafisher, Thank you for your response. I think it's a good decision. It would be nice and correct to adjust also the points to a level 2 challenge for tho…

Re: Challenge "Modified Vigenère Cipher"

 On Feb. 25, 2022, 8:04 p.m.

Hi everybody, At first sight this seems to be a fairly simple challenge, but the opposite is true. It is a really hard one. I eventually managed to solve it, …

Re: Challenge

 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 (am…

Re: Challenge

 On June 6, 2020, 1:07 p.m.

Finally solved it!!! It took me a very very long time to figure this challenge out. But I did it all with pen&paper and Word&Excel. So it is indeed possible to…

Re: Challenge

 On Feb. 27, 2019, 8:51 a.m.

Hi Madness, i solved this challenge not so long ago and my answer was accepted. As far as i remember it was 1 word in capital letters.

Re: Challenge

 On Jan. 7, 2019, 9:49 a.m.

Hi there,

The pdf is still not available, some error. Can someone solve this?

Thanks, Silva

Re: Challenge

 On Dec. 2, 2018, 2:07 p.m.

Thanks George,

I will try your suggestion.
If I get really stuck I will send a PM.

Best Regards, Silva

Re: Challenge

 On Dec. 1, 2018, 8:15 p.m.


Is is possible to solve this challenge with Cryptool 1 or Cryptool 2?

So far I have solved several Enigma challenges, but I am stuck with this. The…

Re: Awarding points in different levels

 On Nov. 11, 2018, 8:34 p.m.

I think it is worthwhile to reconsider the awarding of the 4 different levels. Surely there are some objective criteria on which the challenges are classified …

Re: Language counts for something

 On Oct. 8, 2018, 8:48 p.m.


But, okay – the hint refers to two languages. Is that specific enough to help?

– curmudgeon

I think this hint makes it too easy. I had the…

Re: Challenge

 On Aug. 19, 2018, 1:21 p.m.

Finally, I have solved this challenge, but not without a lot of help!

So, for those who, just like me, think that snow stands synonym with fun in wintertim…

Re: Challenge

 On July 29, 2018, 5:58 p.m.

Don´t know what I am doing wrong. I have a readable password, including low and upper cases. Downloaded the windows 32-bit version of Snow, because the Java ap…

Re: Challenge

 On June 27, 2017, 10:59 a.m.

Ja! Jetzt ist es gut. Da waren, wie Sie sagte, zwei Fehler in die Text. Im Schlüsselstrom 2 mal die 2 Ziffern umgedreht beim Einfuhren in Excel, 06 statt 60! […

Re: Challenge

 On June 26, 2017, 2:11 p.m.


Letzt endlich diese challenge gelöst, mit Hilfe von Tipps von Paol. Thanks!

Es war sehr viel Arbeit um alles mit Bleistift und Papier (und mit E…

Re: Challenge

 On June 23, 2017, 10:25 p.m.

Where can I find more information how to solve this playfair encryption?
I did a bigram frequency analysis and found several frequently used bigrams. But …

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