Re: M4 project
Steve Hosgood <steve-ZMQM5VTtYHJ+cjeuK/[email protected]>
| Newsgroups | gmane.science.cryptography.bletchley-park |
|---|---|
| Message-ID | <[email protected]> |
[email protected] wrote: >steve-ZMQM5VTtYHJ+cjeuK/[email protected] wrote: > > > >>As a point of interest, has the M4 team issued attempts on the message >>using 4th rotor gamma and thin UKW "c"? These messages were intercepoted >>"during the 1941 blackout" (i.e. between Feb and Dec 1941). UKW "C" was >>introduced "in 1941" according to wikipedia. >> >>I'll take a wild guess that the two events happened at the same time, >>and that M4 was equipped with the two "greek" wheels and matching UKWs >>from the start. >> >> > >The messages are from November 1942. M4 was introduced the previous February. >I don't think C/gamma was in service before these messages were sent. >wikipedia may be wrong - another job for Matt. > >Geoff > > > > And of course it was the 1942 blackout, not 1941 as I stated. Wikipedia still claims 1941 as the introduction for UKW-C on the M3 machines though. It doesn't have to be Matt fixing wikipedia if it's wrong of course, but we'd better let Ralph Erskine or Frode Weierud or Tony Sale have time to comment before anyone jumps in! Steve