Re: Vernam Cipher

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Ben Laurie (ben@algroup.co.uk)
Wed, 07 Apr 1999 18:56:56 +0100


Mok-Kong Shen wrote:
> Did I say anything against your 'THE KEY IS THE SAME LENGTH AS THE
> MESSAGE!!!' ???
>
> Did I employ the word 'pseudo-random' ???
>
> According to Menezes et al. a Vernam Cipher is not necessarily
> a one-time pad, contradicting your claim!

If you reuse the key, then it isn't a one-time pad. However, it is the
property that the key is as large as the message that makes it a Vernam
Cipher. Usually, if you are going to go to the bother of making (and
distributing) keys as long as messages, you won't be so stupid as to
reuse them.

Now can we stop discussing it?

Cheers,

Ben.

--
http://www.apache-ssl.org/ben.html

"My grandfather once told me that there are two kinds of people: those who work and those who take the credit. He told me to try to be in the first group; there was less competition there." - Indira Gandhi


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The following archive was created by hippie-mail 7.98617-22 on Thu May 27 1999 - 23:44:21