Re: How to program an enigma cipher?

mensanator@xxxxxxx said:
DarkProtoman wrote:
mensanator@xxxxxxx wrote:

<snip>

You didn't mention any reflector. What does it do and
how hard would it be to implement?

A reflector shifts the letter, then sends it back through the other 5
rotors.

Why would you want to do that?

<quote from Wikipedia>
However, the reflector also gives Enigma the property that
no letter can encrypt to itself. This was a severe conceptual
flaw and a cryptological mistake subsequently exploited
by codebreakers.
</quote>

Perhaps because, if it doesn't have a reflector, it isn't Enigma.

--
Richard Heathfield
"Usenet is a strange place" - dmr 29/7/1999
http://www.cpax.org.uk
email: rjh at the above domain, - www.
.

Relevant Pages

  • Re: How to program an enigma cipher?
    ... A reflector shifts the letter, then sends it back through the other 5 ... Perhaps because, if it doesn't have a reflector, it isn't Enigma. ... Ok, but the OP did originally ask for four 36-character rotors, ... no reflector and no plug-board. ...
    (comp.programming)
  • Re: How to program an enigma cipher?
    ... Richard Heathfield wrote: ... A reflector shifts the letter, then sends it back through the other 5 ... Perhaps because, if it doesn't have a reflector, it isn't Enigma. ... Ok, but the OP did originally ask for four 36-character rotors, ...
    (comp.programming)
  • Re: Was the Abwehr Enigma-G stronger than the normal Enigma, dueto the rotating reflector?
    ... Mike Amling wrote: ... Not all enigma had movable reflectors and on some the last rotor didn't move either. ... Even so, wouldn't the probability of a reflector moving during a message of length N characters be no more than N/, assuming three rotors in addition to the reflector? ...
    (sci.crypt)
  • Re: The Enigma Cipher
    ... > four wheel variant was the one used by Abwehr - Enigma ... > during encryption/decryption. ... > fact a 'settable' reflector. ...
    (sci.crypt)
  • Re: Was the Abwehr Enigma-G stronger than the normal Enigma, due to the rotating reflector?
    ... Not all enigma had movable reflectors and on some the last rotor didn't move either. ... Even so, wouldn't the probability of a reflector moving during a message of length N characters be no more than N/, assuming three rotors in addition to the reflector? ...
    (sci.crypt)