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Date:      Tue, 7 Aug 2001 16:45:10 -0600 (MDT)
From:      John Galt <galt@inconnu.isu.edu>
To:        parv <parv_@yahoo.com>
Cc:        f-q <freebsd-questions@FreeBSD.ORG>
Subject:   Re: how is mail secure when only signed?
Message-ID:  <Pine.LNX.4.33.0108071643330.14442-100000@inconnu.isu.edu>
In-Reply-To: <20010807023118.A47821@moo.holy.cow>

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On Tue, 7 Aug 2001, parv wrote:

>i am curious as why would some people, thus software, would consider a
>plain text mail which is only signed, not encrypted, w/ public key of
>some encryption scheme as secure? i mean what's stopping alice to use
>bob's public key to sign her mail to dupe the receiver as if mail is
>from bob?

http://world.std.com/~dtd/sign_encrypt/sign_encrypt7.html

It's not.  This was discussed on one of the securityfocus mailinglists a
while ago.

>in other words, if public key signature is used to mark mail secure,
>not to actually encrypt, how could the source/owner of public key be
>verified?

It's the private key, but that's pretty much irrelevant

>
>

-- 
There is no problem so great that it cannot be solved with suitable
application of High Explosives.

Who is John Galt?  galt@inconnu.isu.edu, that's who!


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