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From: galvin@udel.EDU (James M Galvin)
Newsgroups: sci.crypt
Subject: Re: FIDONET Proposal - Public Key Encryption System
Message-ID: <409@louie.udel.EDU>
Date: Mon, 3-Aug-87 16:33:54 EDT
Article-I.D.: louie.409
Posted: Mon Aug  3 16:33:54 1987
Date-Received: Tue, 4-Aug-87 04:49:26 EDT
References: <562@ihnet.ATT.COM>
Reply-To: galvin@udel.EDU (James M Galvin)
Organization: University of Delaware
Lines: 13
Keywords: Public Key Encryption

In article <562@ihnet.ATT.COM> tjr@ihnet.ATT.COM (Tom Roberts) writes:
>1) How does a user KNOW that the correct (i.e. uncompromised) public key
>   is being used.

You go on to point out that if the key is modified, then the recipient will
see garbage upon attempting to decrypt the message.   But this is not the
serious problem.  As I pointed out before, it is the fact that an
eavesdropper can learn your key and substitute his/her own in its place.
Then the privacy of all communication is lost, without your knowledge.

Jim
-- 
James M Galvin