Viewing Single Post From: Clarification

Viewing Single Post From: Clarification
osric	Jul 9 2009, 08:20 AM
Advanced Member Posts: 51 Group: Members Member #3,254 Joined: March 15, 2009	Quote: Finally, is the challenge that seems more solvable (since it came from Crpytologia editors) is deciphering exhibit 5? Yes, I think so. As Moshe has explained elsewhere in this Forum, the fact that these 3 messages are 'in depth' should help us. If we could marry up the 3 ciphertexts to their correct plaintexts, we have a chance of working out the keys and how the machine works. By the 'keys' I mean those alphabets (presumably they are mixed alphabets) and the disk movements after each encipherment. Some of us (Greg Mellen, Jeff Hill, Moshe and myself) have tried to build a model of the Byrne machine that will replicate Exhibit 1 ciphertext from the plaintext but these attempts have not succeeded. Jeff and Moshe especially have also spent time trying to find the plaintext for the 3 ciphertexts from Deavours and Kruh. So far that has also been a dead end, but -- provided there are no mistakes -- this is probably a more promising attack because there is the extra 'information' from arising from the depth. Your intuitive gut-feel that the plaintexts may be quotations is the sort of new approach that is very useful -- and prompts me to have another look! Well done.


Clarification · Chaocipher