- This topic has 3 replies, 2 voices, and was last updated 2 weeks, 2 days ago by Mattyrat2027.
4th November 2022 at 6:13 pm #87140Mattyrat2027Participant
Wasn’t sure where to post this so I’ll do it here:
With regards to alphabets (particularly ones used in the challenges so far), 1. Were keys used to form the alphabets, and 2. If it is permitted to say, how does one extract said keys?10th November 2022 at 10:57 am #87152madnessParticipant
Tell me what you think the alphabet was for 3B and I might be able to show you.10th November 2022 at 10:57 am #87168madnessParticipant
It’s gonna take the elves forever to moderate, so I might as well explain now.
You probably kept track of the key that decrypts from ciphertext to plaintext. For 3B, that would be
But the key of a substitution cipher is the mixed alphabet that takes you in the other direction: from plaintext to ciphertext.
So you have to invert the key that you found. And here is how to do it.
Put the unmixed ciphertext alphabet in capital letters under the mixed plaintext alphabet in lower-case (the key you found):
Then, move the columns around until the upper row is straightened out. The first column to move is the aW column:
a bopqrstuvwxyzfeghidcjklmn W ABCDEFGHIJKLMNOPQRSTUVXYZ
The bA column is already where it belongs. Next is cT:
abc opqrstuvwxyzfeghidjklmn WAT BCDEFGHIJKLMNOPQRSUVXYZ
When you are done you will have
and you can just see the keyword.17th November 2022 at 11:30 am #87287Mattyrat2027Participant
Wowzers, that is like REALLY cool.
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