Article View: sci.crypt
Article #3373Re: bitwise exclusive-or
From: tim
Date: Sat, 31 Jan 1987 00:47
Date: Sat, 31 Jan 1987 00:47
21 lines
1491 bytes
1491 bytes
In article <9112@duke.duke.UUCP> srt@duke.UUCP (Stephen R. Tate) writes:
>
> Now since the data is transmitted over an insecure channel, then
> the key data is the valuable information. So why not just use
> the secure courier for sending the actual data?
Because the key is only valuable if you use it to send a message.
If you send the message itself via courier, then an enemy simply has
to steal the message to get the information. They don't have to be
subtle.
If you only send the key, then not only must the enemy steal the key,
but they must do it in such a way that you will not suspect that they
got it. If you do suspect, you simply don't use it, and they get nothing.
They have to be much more subtle to get your message this way.
--
Religion: just say "no"
Tim Smith USENET: sdcrdcf!ism780c!tim Compuserve: 72257,3706
Delphi or GEnie: mnementh
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!rutgers!sri-spam!sri-unix!hplabs!sdcrdcf!ism780c!tim From: tim@ism780c.UUCP Newsgroups: sci.crypt Subject: Re: bitwise exclusive-or Message-ID: <5368@ism780c.UUCP> Date: Fri, 30-Jan-87 19:47:11 EST Article-I.D.: ism780c.5368 Posted: Fri Jan 30 19:47:11 1987 Date-Received: Sat, 31-Jan-87 14:54:44 EST References: <434@ethz.UUCP> <1338@navajo.STANFORD.EDU> <9112@duke.duke.UUCP> Reply-To: tim@ism780c.UUCP (Tim Smith) Organization: Interactive Systems Corp., Santa Monica, CA Lines: 21