Re: Enigma rotors - numbered or lettered ??
Craig Heath <craig-mSyzSVBiQZi7jjDMp6nRB7mpYI/[email protected]> Fri, 22 Jun 2012 13:27:15 +0100
| Newsgroups | gmane.science.cryptography.bletchley-park |
|---|---|
| Message-ID | <CAE3Kp9emz3QspSBE+hd-PTx0RHQunvckXKK=K7ZvQ-HMghZ1VQ@mail.gmail.com> |
As to why, I suggest 01-26 makes more sense cryptographically (it's just the ring position, not a representation of a plaintext or ciphertext letter) whereas A-Z is easier to transmit in Morse code as part of the message preamble. It just seems that the army/air force and the navy cipher divisions made different choices. - Craig. On Jun 22, 2012 11:29 AM, "David Hamer" <[email protected]> wrote: > Mark... > > Enigma: the army and GAF machines used 1-26 index rings - all other > variants used A-Z... > > David H. > > At 05:09 06/22/2012, Mark Baldwin wrote: > >Can anyone explain, please, why the index rings on some Enigma rotors > >are lettered A - Z, whereas others are numbered 1 - 26? > > > >Cryptographically there is no significance, and the A-Z/1-26 conversion > table > >is printed on the standard instruction sheet usually attached to the > inside of the lid. > > > >Thanks! > >Mark Baldwin > > ************************************************************ > David Hamer [email protected] > http://home.comcast.net/~dhhamer [email protected] > ************************************************************ >