Help with Mission 6A

[Enigma_X]

Hello Harry,

I am the leader of a team. I am trying to solve Mission 6A but I could not find any clues. It says that it’s the same as Mission 5A but I cannot see any obvious links. Could you help?

Mr. Y

[Harry]

I will allow suitable clues to this now, so if anyone wants to try their hand at one, have a go! Harry

[Rhydwen]

If you aren’t having any success with the start, have a look at the end. That may prove an easier target.

[BobD]

2538 characters – it will help if you factorise this number.

[professor-count]

I’m also struggling with this one. I think I have tried the techniques from the last week, I’ve also tried looking at the end but I can not see what I am missing. Please, if anyone else has any more hints I would be eternally grateful.

[madness]

Have you tried to brute-force it? There are only 6! possible keys. Oops! Did I say too much?

[madness]

If you look closely at the ciphertext, you might see traces of words. Follow the tracks and you can get to a solution.

[BobD]

There aren’t that many Js

[Mattyrat2027]

Assuming I’m not completely on the wrong track (do correct me if so), would it be permitted to reveal whether it is written/read by columns/rows or rows/columns etc.

Thanks

[madness]

rows/rows

key: 5,3,0,1,2,4
keyword: TRACES or TRACKS

[Mattyrat2027]

Thanks @madness.
I got close with 254310 (giving some nearly completed words) but there were still incorrect letters. I must be doing something wrong with 530124, as it doesn’t seem any more solved.
Any more tips please?

[f6exb]

@Mattyrat
At the end, something look like “crypt”, “decrypt” or “decrypted”.
OURY DGRYP CTE
As there is only one “E” in the last 12 characters, it’s not “decrypted”.

[Mattyrat2027]

@f6exb @madness
Thanks for your help, where I went wrong was that I had reversed the ciphertext (not sure why I had done that, perhaps a misinterpretation of another tip). Thanks again, it’s satisfying to see everything fall in place.

[madness]

@RAT, maybe you are working with the inverse permutation.

[Mattyrat2027]

I take this to mean that if I use the reverse key with the reverse ciphertext I get a result?

[Author]

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