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The following archive was created by hippie-mail 7.98617-22 on Thu May 27 1999 - 23:44:21
Alex Alten (Alten@Home.Com)
Thu, 08 Apr 1999 00:25:11 -0700
At 09:43 AM 4/7/99 +0200, Mok-Kong Shen wrote:
> If the key string is randomly chosen and never used again, the
> Vernam cipher is called a one-time system or a one-time pad.
If the key string is used and it is randomly unpredictable when it
will be used again, then it is possible encipher with a known, finite
strength. However it is quite difficult to manage a finite set of
random key strings properly.
>Thus (1) the Vernam cipher is a stream cipher, (2) a Vernam cipher
>does not necessarily have to do with the one-time pad. In my humble
>understanding the majority of present day stream encoding is performed
>at the bit level with XOR and is hence Vernam cipher.
A "whatever-it-is" is not an OFB stream cipher. ;-)
- Alex
--Alex Alten
Alten@Home.Com Alten@TriStrata.Com
P.O. Box 11406 Pleasanton, CA 94588 USA (925) 417-0159
The following archive was created by hippie-mail 7.98617-22 on Thu May 27 1999 - 23:44:21