Cypherpunk Mailboxes?

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Hi,

I have a thought for addressing the anon. problem.

We could create a network of anonymous remailers with mailboxes. All messages in the mailboxes are stored encrypted. No information about the users are keep. Users would be be given x K of mailbox space.

We could use PGP keys for encrypting the messages. Each user would have his own key pair for his anonymous mailbox. Any plain text messages received to the server would be encrypted on recept.

Let the government's subpoena away. :)

"Sorry we don't have user addresses, no I can't decrypt those messages Senator." <BEG>

What do you think?

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William H. Geiger III  http://www.amaranth.com/~whgiii
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On Mon, 2 Sep 1996, William H. Geiger III wrote:

> Hi,
> 
> I have a thought for addressing the anon. problem.
> 
> We could create a network of anonymous remailers with mailboxes. All
> messages in the mailboxes are stored encrypted. No information about the
> users are keep. Users would be be given x K of mailbox space.
> 
> We could use PGP keys for encrypting the messages. Each user would have his
> own key pair for his anonymous mailbox. Any plain text messages received to
> the server would be encrypted on recept.
> 
> Let the government's subpoena away. :)
> 
> "Sorry we don't have user addresses, no I can't decrypt those messages
> Senator." <BEG>
> 
> What do you think?

The only problem is there has to be someway for users to retrieve their mail.
The current nym server approach is to use an encrypted reply block to send a
user new mail.  This way the nym server doesn't know who the user is.  If users
have to actively retrieve their mail, then the feds could install a packet
sniffer on the remailers net link to find out the real email address of an
anonymous user.

- -- Mark

PGP encrypted mail prefered.
Key fingerprint = d61734f2800486ae6f79bfeb70f95348
http://www.voicenet.com/~markm/

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On Mon, 2 Sep 1996, Mark M. wrote:

> Date: Mon, 2 Sep 1996 13:41:04 -0400 (EDT)
> From: "Mark M." <markm@voicenet.com>
> Reply-To: cypherpunks@toad.com
> To: cypherpunks@toad.com
> Subject: Re: Cypherpunk Mailboxes?
> 
> On Mon, 2 Sep 1996, William H. Geiger III wrote:
> 
> > Hi,
> >
> > I have a thought for addressing the anon. problem.
> >
> > We could create a network of anonymous remailers with mailboxes. All
> > messages in the mailboxes are stored encrypted. No information about the
> > users are keep. Users would be be given x K of mailbox space.
> >
> > We could use PGP keys for encrypting the messages. Each user would have his
> > own key pair for his anonymous mailbox. Any plain text messages received to
> > the server would be encrypted on recept.
> >
> > Let the government's subpoena away. :)
> >
> > "Sorry we don't have user addresses, no I can't decrypt those messages
> > Senator." <BEG>
> >
> > What do you think?
> 
> The only problem is there has to be someway for users to retrieve their mail.
> The current nym server approach is to use an encrypted reply block to send a
> user new mail.  This way the nym server doesn't know who the user is.  If users
> have to actively retrieve their mail, then the feds could install a packet
> sniffer on the remailers net link to find out the real email address of an
> anonymous user.
> 
> -- Mark
> 
> PGP encrypted mail prefered.
> Key fingerprint = d61734f2800486ae6f79bfeb70f95348
> http://www.voicenet.com/~markm/

Hrmm.. perhaps there's a better way...
such as having the user and the mail server negoiae a key (i don't really
know the details of diffie-hellman or he like, so tell me if this isn't
feasable), and have the encryption/decypion routines strip addresses,
so that the person is only identifiable by their key...

anybody see what i'm saying?

 --Deviant
All extremists should be taken out and shot.

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On Mon, 2 Sep 1996, The Deviant wrote:

> Hrmm.. perhaps there's a better way...
> such as having the user and the mail server negoiae a key (i don't really
> know the details of diffie-hellman or he like, so tell me if this isn't
> feasable), and have the encryption/decypion routines strip addresses,
> so that the person is only identifiable by their key...

The mail server still has to send packets to the user.  A packet sniffer might
not be able to find out the actual contents of the transmission, but it would
be able to find out the host that has made the connection.  If this is combined
with the knowledge of the times that certain user's mailboxes get cleared out,
it would be possible to find out which nyms belong to which people.  The
current nym servers that automatically forward mail do not have this problem.

- -- Mark

PGP encrypted mail prefered.
Key fingerprint = d61734f2800486ae6f79bfeb70f95348
http://www.voicenet.com/~markm/

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