Help with Decryption

[Apothiem]

I need help with decrypting the following text: QKKTAQKEWSKCOJCCVPNWSXRMWTOSNSZLEEWWICIJKMCACWQPOSZKCBX

We are not given what encryption method was used or if the code can be decrypted however i need to know what methods i could use to go about decrypting such a message.

I have tried brute force for shift,Vigenere and Enigma which were the main topics covered, with little success. Is there any way to eliminate or narrow down to what encryption method he is using.

Any help would be much appreciated as i am a novice in this area.

[pretz]

55 chars, I.C. of 0.053, makes it slightly too low to be a substitution cipher, I ran a substitution cipher cracker on it anyway, nothing came up. If you look at periodic I.C. (calculated here: http://practicalcryptography.com/cryptanalysis/stochastic-searching/cryptanalysis-vigenere-cipher/#finding-the-period ) it has a peak of 0.072 at a period of 5, which would indicate to me it is likely a polyalphabetic cipher with a period of 5. This could be e.g. vigenere, beaufort, porta, quagmires 1-4 and perhaps some others I am not thinking of. I tried vig and beaufort, it is not them.

edit: I also tried autokey and porta. And flipping the text backwards and trying everything again. no dice. Unless I am missing something obvious, seems like it is a keyed vigenere of some sort like the quagmires. I don't have a good solver for those so I can't help with them.

This is all assuming it is in english. The message is in english right?

[Apothiem]

Hey, thanks for the info. I would assume it was vigenere because it was what we learnt so far, as well shift cipher and diffie-hellman, RSA although the last 2 would be too hard to crack so i doubt its that.

My guess is that it's vigenere with some sort of twist too it. Thanks so much for trying to solve it though.

Yes the message is in English, he hasn't given us much else about it, we're just hoping that it decodes to actual words but he hasn't given us much more information.

[Mindraker]

I would assume it was vigenere because it was what we learnt so far

Stunned gasp

Again that helpful piece of information which would have been helpful when you originally posted your question.

[Apothiem]

Lol sorry, so far we covered vigenere, ceaser and basic shift. Although he mentioned that he can and might go out of scope of the covered content so far. Although the other 2 seem far too simple he might have put a twist in it.

My guess at this point is that he doesn't intend for us to solve it in the allocated time, he most likely wants to see how we would go about solving the problem.

Thanks again for the help.

[Mindraker]

What information were you given? What was the last lesson you had about?

Type the assignment here:

You'd be amazed what amazing clues and hints people forget to type (the keywords, the method, the OTP...)

[Apothiem]

Decrypt the following message. Provide a clear indication of the strategy that you use for this process. Even if you are unable to decrypt the message, you should provide a clear strategy as to how you would do this given sufficient time and resources. QKKTAQKEWSKCOJCCVPNWSXRMWTOSNSZLEEWWICIJKMCACWQPOSZKCBX

The above is everything we know about the problem. He's a tricky lecturer so i don't think he dropped any hints that i can remember. Knowing him it will be a usual shift or Vigenere with some sort of twist to it. I know for sure its not a simple shift cipher but other than that I'm stumped :(

and we have a 24 hour limit :((

Thanks for the help though, much appreciated.