Hi Jess, you require the correct code sheet and which bigram table to use. As far as I can see you have insufficient information to determine that requirement . You have the date, the 15, as mentioned in the header which just isn't enough, there are more experienced members who may be able to point out some steps. For example use neptun bigram table, use hydra inner outer settings etc. Come on guys, step up to the plate lets not make the forum too elitist.
Thanks all, but I start from decrypt letters from the very beginning and stop precisely on “Harry Hinsley’s Trawlers” letter and this is my first decrypting of Kreigsmarine Enigma code. Before I carefully read the manual, but in this case I do not find the bigram and the keys tables which I should use, may be that is the task for me to find them in the site? Because I have no problem with the settings M4
So for Harry's Trawlers you use the machine settings U571 December 7, 1944:
07 | III IV II | 03 05 08 | BJ CD EF GL HN IR MT OV QS UY | BVG EPL UTM KFO |
Notice BVG is the correct kenngruppe for the day and message, indicated within the first 5 characters of the message body.
Set the M3 B Enigma using the settings above, and turn the rotors to the starting position LPO. Then type in VPQ. This should give you YVZ. If it doesn't recheck your settings. Reset the rotors for YVZ, then begin decrypting the message at ULIL.
Ah, I think I ran into this before - might be an incorrect bigram table. Try the first link below -> I'm off to work right now else I'd test this for you.
"Apr 1, 2019 at 5:20pm QuotePost OptionsPost by hobbit601 on Apr 1, 2019 at 5:20pm Well, if anyone cares I did some digging in the other threads and found a link to the correct bigram table for basic M4 decoding:
posted in the 'Need Some Help Decoding' thread enigmaworldcodegroup.freeforums.net/thread/64/help-decoding.
The bigram table posted in the instructions page docs.wixstatic.com/ugd/c8f6f9_d2fee990248a445c9ec0d543feed8fdc.pdf does not work for the M4 newsletter messages I have attempted so far. Would be good to update the instructions page with the correct link."
If those are not the correct bigrams (no time for me to check them now), then I'm afraid technician275 is right. The ones on the site right now are from 2018, and the challenge is from 2014. Lessons learned from here