From: kelly@netcom.com (Kelly Goen)
Date: Fri, 5 Mar 93 16:03:33 PST
To: cypherpunks@toad.com
Subject: VOICE PRIVACY: Internet av phones
Message-ID: <9303060002.AA04236@netcom.netcom.com>
MIME-Version: 1.0
Content-Type: text/plain


Forwarded message:
> From cypherpunks-request@toad.com Fri Mar  5 15:32:07 1993
> Date: Fri, 5 Mar 93 18:20:30 -0500
> From: Theodore Ts'o <tytso@Athena.MIT.EDU>
> Message-Id: <9303052320.AA02319@SOS>
> To: Bob Stratton <strat@intercon.com>
> Cc: cypherpunks@toad.com
> In-Reply-To: Bob Stratton's message of Fri,  5 Mar 1993 03:51:59 -0500,
> 	<9303050351.AA59962@horton.intercon.com>
> Subject: Re: Encrypted voice protocol?
> Address: 1 Amherst St., Cambridge, MA 02139
> Phone: (617) 253-8091
> 
>    Date: Fri,  5 Mar 1993 03:51:59 -0500
>    From: Bob Stratton <strat@intercon.com>
> 
>    I don't know how many of you are at sites on the MBONE, or multicast 
>    backbone. There are already a few pieces of code out there for 
>    experimentation with transmission of audio and video information, in a 
>    variety of forms/encoding, and probably the most widely used tool,
>    "vat - the  Visual Audio Tool", already has provisions for carrying
>    on encrypted audio teleconferences via IP.  In fact, it's as simple
>    as typing a key into a field, and the tool will DES en/decrypt the
>    conference.  
> 
> That's a good start!  Now all we need something which is a bit more
> general in its selection of the asymmetric encryption algorithm, and
> something which does public key for authentication and protection of the
> assymetric session key.
> 
> 							- Ted
> 

 would suggest a diffie-hellman key exchange protocol to ensure
non-recovery of the session key...
BTW at least your hearts in the right place Ted...
     cheers
     kelly

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