Re: M4 project
Tony Sale <tsale-BY/[email protected]>
| Newsgroups | gmane.science.cryptography.bletchley-park |
|---|---|
| Message-ID | <[email protected]> |
In message <BD2365915FAF74468CFCB599729BD64A919D86-1tyLoVlAkPgf1e9Zp+ivQ3IPMjoJpjVV@public.gmane.org>, Frode Weierud <[email protected]> writes >Dear Tony and Faithful Readers of the BP Mailing List, > >I can assure you that Hillclimbing Steckers work beautifully. Geoff >Sullivan and I have been hillclimbing the Enigma since 2003 and we have >broken more than 780 Enigma messages this way. > >I am astonished that none of you seem to know about this as it has been >published a year ago and it even got coverage in the press, Sunday Times >etc. > >You will find all details on our Web Portal, Breaking German Wehrmacht >Ciphers. >http://cryptocellar.org/bgac/ > >The M4 message Ralph Erskine discovered he found in the PRO, now The >National Archives, in Kew, London. > >I can also reveal that the M4 Message Breaking Project has broken their >second M4 message. It has the same wheel order as the first one but >different Stecker connections. > >Best wishes, > Frode > Frode et al, I've obviously been immersed in Colossus too long, my brain has addled! I realise now that the Rack just won't work for Stecker hill climbing. The Rack takes a set of Steckers and asks if there is any Wheel order, start combination which produces a language letter distribution on the decipherement. Stecker hill climbing asks is there any Stecker combination which produces a language letter distribution for a GIVEN Wheel order wheel start position. I will produce a modified virtual rack to do this, just for my own satisfaction. regards-- Tony Sale