Re: Term of Art
Matt R <[email protected]>
| Newsgroups | gmane.science.cryptography.bletchley-park |
|---|---|
| Message-ID | <[email protected]> |
--- Steve Hosgood <steve-ZMQM5VTtYHJ+cjeuK/[email protected]> wrote: > Ha! Let me guess.... you're part of the M4 project trying to break that > elusive message and noticed the comment from Ralph Erskine and Frode > Weierud stating that the messages are probably Enigma but could possibly > be RHV. So you went looking up RHV (as I did) and came up with Hinsley > and Stripp (as I did). Nothing in wikipedia I notice - "Matt Crypto" is > slipping! Heh, well, I was compelled to write a Wikipedia article after that *grin*. http://en.wikipedia.org/wiki/Reservehandverfahren However it's not particularly useful, not least because I couldn't find very much on the topic. In addition to the Hinsley and Stripp reference, Hugh Sebag-Montefiore covers it very briefly, although he concentrates more on the eccentric antics of the RHV codebreakers rather than the system itself. He does write that: "To encipher plain-language text into RHV, a telegraphist first had to fit the German message into a `cage', a shape drawn on a piece of paper. The cage's shape changed each month. The function of the cage was to ensure that each letter in the plain-language group became part of a vertical bigram." I also found a website which sells original and copies of German WWII manuals, including copies of the 1940 Reservehandverfahren Allgemein manual for 15 Euros: http://www.superborg.de/mdv900.htm -- Matt Wikipedia: http://en.wikipedia.org/wiki/User:Matt_Crypto Blog: http://cipher-text.blogspot.com ___________________________________________________________ NEW Yahoo! Cars - sell your car and browse thousands of new and used cars online! http://uk.cars.yahoo.com/