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Article #3399

Re: bitwise exclusive-or

#3399
From: lazarus
Date: Tue, 10 Feb 1987 23:06
16 lines
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In article <5580@brl-smoke.ARPA> gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>) writes:
>Another line of attack is to collect discarded key tapes from
>the dumpster and use them to read past messages.  (Would any
>outfit be so stupid as to not permanently destroy the key tape?
>It happens.)

Yes, the United States Navy is this stupid.  My understanding -- the
newspapers all claimed it was 'classified'  -- is that the Walker spy
ring gave the Soviets the old keys.  These were, of course, useless
for future messages but did enable them to break recorded encrypted
messages.

(Apparently our forces have an electronic equivalent to many
one-time-pads, and know which one to use next.)

andy
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Message-ID: <924@cartan.Berkeley.EDU>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watnot!watmath!clyde!rutgers!mit-eddie!genrad!decvax!ucbvax!cartan!brahms.Berkeley.EDU!lazarus
References: <434@ethz.UUCP> <5580@brl-smoke.ARPA>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watnot!watmath!clyde!rutgers!mit-eddie!genrad!decvax!ucbvax!cartan!brahms.Berkeley.EDU!lazarus
From: lazarus@brahms.Berkeley.EDU.UUCP
Newsgroups: sci.crypt
Subject: Re: bitwise exclusive-or
Message-ID: <924@cartan.Berkeley.EDU>
Date: Tue, 10-Feb-87 18:06:37 EST
Article-I.D.: cartan.924
Posted: Tue Feb 10 18:06:37 1987
Date-Received: Wed, 11-Feb-87 23:44:24 EST
References: <434@ethz.UUCP> <5580@brl-smoke.ARPA>
Sender: daemon@cartan.Berkeley.EDU
Reply-To: lazarus@brahms.Berkeley.EDU (Andrew J Lazarus)
Organization: Math Dept. UC Berkeley
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