Re: One-Time_Pad

From: Alan Connor (zzzzzz_at_xxx.yyy)
Date: 10/30/03 

Date: Thu, 30 Oct 2003 20:29:04 GMT

On Thu, 30 Oct 2003 14:40:25 +0100, Neko <neutral_insomniac@yahoo.com> wrote:
>
>
> Ok. Lets say that I have a purely random (not pseudo) source that can
> generate any type of data (binary, hex, digits etc...) and I have a
> computer to print it in any form I want. After I print this off, I
> would make it into a little book that would be highly portable. I would
> generate a copy of this pad and give it to my accomplice, and we would
> keep our pads in sync by tearing off any pages that we use, if even we
> only use one element of that pad. Maybe we'll even have two pads each,
> one for messages both ways. What would be the best way to have the pad
> set up? Should I do letters, and add them modulo 26, should I do
> digits? If so, how many? I've seen a pad with rows of random 5-digit
> numbers that looked pretty cool. Also, how on earth would I get it from
> my computer to an easy way to cut it all out and attatch the pages
> together? How many letters per page should I make it? I just want to
> know if any of you make one time pads, and if so, how do you do it?
> Again, any and all advice will be helpful. Thank you!!!
>
> Neko
>

You can just start with one OTP apiece. Compose your message, then
"weave" (in any number of ways) the OTP you want them to use to reply
with into the message.

Then encipher it in the OTP they are expecting and have the key for.

The "weaving" further obscures your actual message, as an added benefit. 

-- 
Alan C    this post ends with    w
                                 q

Relevant Pages

  • One-Time_Pad
    ... Lets say that I have a purely random source that can ... generate any type of data (binary, hex, digits etc...) and I have a ... only use one element of that pad. ... How many letters per page should I make it? ...
    (sci.crypt)
  • Re: One-Time_Pad
    ... "Neko" wrote ... ... Lets say that I have a purely random source that can ... > only use one element of that pad. ... How many letters per page should I make it? ...
    (sci.crypt)
  • Re: One-Time_Pad
    ... Lets say that I have a purely random source that can ... > only use one element of that pad. ... Since those decisions don't affect OTP security, ... I'd use two decimal digits per symbol and print ...
    (sci.crypt)
  • Re: One-Time_Pad
    ... MacGregor K. Phillips wrote: ... Lets say that I have a purely random source that can ... >>only use one element of that pad. ...
    (sci.crypt)
  • Re: Use of Pseudo Random Generators for One Time Pad?
    ... > does not qualify for use in a One-Time Pad. ... > but without ideal security". ... It's the same operation as encrypting with a stream cipher, ... true random otp. ...
    (sci.crypt)