Post by mauser on Aug 27, 2017 19:13:15 GMT
Ok Enigma peeps, working with a software tool I have, I've done some research on our Triton August challenge message. Want to have some fun? Ok, set up your machines for EWCG2017TRITON and put in the August 5 day key just like you did to read the challenge message. Now forget what the message key is as I'm going to give you dozens that will open and read that message. Seriously you say!? Yes, I say. The original inner ring settings for that day are GFYV. But if you set them to GNYV, GNZV, GNAV, GNBV, GNCV, GNDV, etc, etc, and then use RAAF, RABF, RACF, RADF, RAEF, RAFF, etc, etc, you will read the Orginal message just like it was encrypted. I finally got bored in the middle of the night after I went through RBAF and GOAV, and perfect decodes.
What I was doing was trying to time how long to a break given I knew the reflector, Greek wheel, wheel order and Stecker, but not the inner ring or message key settings. When I started the run, 75.55 seconds later at RAAF/GNYV, I got the first 100% decode. I left the program run a little over two hours, lost track of how many complete decodes I had, but this much was common, if the inner ring settings had G for first and V for last, and the message key started with an R and ended with a F, in almost all cases the message was revealed 100%.
Consider this, if BP had the day key, they really didn't need the message key. They could easily find the message by starting the message key at AAAA and varying only the first and fourth character until the message fell out into their hands. Only a measly 676 tests at the very most (I.e. ZAAZ). If they didn't have the Stecker, it would be much longer. They would have to try decodes until the IOC fell near 0.0649 plus or minus and the letter frequency started to look like normal German. Then start playing at plug board substitutions until the message was decoded completely.
Finally for what it's worth, I've commented on the using a three wheel message Kay and not touching the Greek wheel. Where the navy changed all four wheels after the introduction of the M4. How significant that is is this, with the Greek wheel known but the other three unknown, my laptop gives me the decode in roughly 2 seconds whereas having to search through the entire quadram set takes about 70 seconds less about 2 seconds if I have a crib that is in the message.
Have fun experimenting!
Mauser sends
What I was doing was trying to time how long to a break given I knew the reflector, Greek wheel, wheel order and Stecker, but not the inner ring or message key settings. When I started the run, 75.55 seconds later at RAAF/GNYV, I got the first 100% decode. I left the program run a little over two hours, lost track of how many complete decodes I had, but this much was common, if the inner ring settings had G for first and V for last, and the message key started with an R and ended with a F, in almost all cases the message was revealed 100%.
Consider this, if BP had the day key, they really didn't need the message key. They could easily find the message by starting the message key at AAAA and varying only the first and fourth character until the message fell out into their hands. Only a measly 676 tests at the very most (I.e. ZAAZ). If they didn't have the Stecker, it would be much longer. They would have to try decodes until the IOC fell near 0.0649 plus or minus and the letter frequency started to look like normal German. Then start playing at plug board substitutions until the message was decoded completely.
Finally for what it's worth, I've commented on the using a three wheel message Kay and not touching the Greek wheel. Where the navy changed all four wheels after the introduction of the M4. How significant that is is this, with the Greek wheel known but the other three unknown, my laptop gives me the decode in roughly 2 seconds whereas having to search through the entire quadram set takes about 70 seconds less about 2 seconds if I have a crib that is in the message.
Have fun experimenting!
Mauser sends
