I tried short-cutting the initial handshake info from
my initial paragraph.  You are, of course, correct
regarding decryption.  However, it was my interpretation
that the use of the word snoop, given the original
author's intention, meant seeing clear text data.
To wit:
>To proxy an https the proxy MUST decrypt the message ( or it cannot
>understand the request ), so it MUST be the secure sever for the client (
or
>it will not have the key to decrypt ) and then the proxy MUST re-encrypt
and
>then become the client for a connection with the remote server.


-----Original Message-----
From: Eric Rescorla [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 25, 2002 1:40 PM
To: [EMAIL PROTECTED]
Subject: Re: 


Neff Robert A <[EMAIL PROTECTED]> writes:
> You cannot snoop a secure https transaction without somehow
> pretending to be the destination host.  To do that requires
> the cert, which is public, and private key, which you will
> not have. 
Sort of. You can certainly passively snoop an HTTP transaction.
There's no need to pose as the server.  Decrypting the traffic
requires, as you say, the private key, but not the certificate.

-Ekr

-- 
[Eric Rescorla                                   [EMAIL PROTECTED]]
                http://www.rtfm.com/
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