On May 27, 2022, 10:46 p.m.
Very nice challenge.
One comment: Although I solved the challenge (and found the underlying plaintext, through a combination of cryptanalysis and detective w…
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On Jan. 5, 2022, 7:52 p.m.
Hello
I am trying to solve this very interesting challenge, with a couple of new ideas, and an interesting vulerability, which I am happy to share (privately)…
On July 16, 2019, 8:10 a.m.
It is relevant in order to make sure that you have the correct key, by checking that the decrypted text is fully correct, and this is not a nearby key, that wo…
On July 15, 2019, 11:36 p.m.
Make sure the plaintext is clean and correct.
As mentioned in the challenge PDF, all the original plaintexts are from Shakespeare, and if you have an appro…
On July 15, 2019, 9:18 p.m.
I double checked, and with the full key including the correct wheel positions (those that are unknown), the cipher decrypts correctly with the provided simulat…
On May 10, 2019, 10:04 p.m.
For those of you who tried already and the answer was not accepted, you may try again, as the ciphertext is now correct (it was wrong previously).
On Sept. 4, 2015, 8:01 p.m.
Granit is a safer cipher than the regular double-transposition cipher, which requires at least 500-600 for having any chance of being solved ciphertext-only (I…
On May 23, 2014, 6:19 p.m.
As usual, Bart is correct!.
Indeed, there is a mistake in the explanation (but fortunately not in the challenge itself):
The example should be:
======…
On May 13, 2014, 12:54 p.m.
Bart13
You are right and thank you for catching the error.
This is the correct crib
FINDSHIMSELFMASTEROFHISOWNESTABLISHMENTWERESUFFICIENTTOABSORBALL…
On March 31, 2014, 5:37 p.m.
Hi Luis
Many thanks for your exciting challenges and your kind clarifications.
In fact I already solved #2 by chance, partially manually.
I can tell yo…
On March 30, 2014, 10:08 p.m.
This is a message for the author.
I just want to make sure I fully understand the challenge:
1) Is the homophone table known or unknown?
2) Is the homo…
On Dec. 19, 2013, 2:09 a.m.
Hi Victor
Based on research recently done (eventually leading to the solution of the original Double Transposition Challenge X), we can say the following: …
On Aug. 25, 2013, 10:36 a.m.
Is the friend german? or does he writes in English? I should know since he is my friend :-)
The previous messages were in English but the hint says:
Hint…
On Aug. 25, 2013, 12:46 a.m.
Just finished this challenge, this was great fun. I tried many approaches, and the solution came from a unexpected direction…. Of course, it helps to have such…