Public key crypto by hand

[vedaal at hush.com]

Brian Mearns wrote:

>if anyone knows of a
>public key system that can realistically be done by pencil and 
paper

...

>anything that can reasonably be
>done by hand wouldn't be secure.

>Oh well. Pad locks it is. =)


don't know of any 'public key' systems,
but there are 'by hand' systems that are described as secure

http://www.schneier.com/solitaire.html


the problems with a 'by hand' system are:

- getting a sufficiently 'random' key,
- being able to share it with a correspondent,
- and being able to change it with each message


try asking on sci.crypt

David Wagner is a respected cryptographer who occasionally answers 
interesting crypto questions

for the other posters there,
some are very helpful
and some are not at all
and some vary ... ;-)


vedaal

any ads or links below this message are added by hushmail without 
my endorsement or awareness of the nature of the link