[cap-talk] mailkey: transfer of accountability

[Karp, Alan H]

David Hopwood wrote:
> 
> I don't think that the mailkey protocol does assume this. It doesn't
> involve sending mail to any principal, without first having received a
> keyed address for that principal from some other principal 
> that already
> knows it.
> 
Perhaps I misunderstand.  In mailkey, Alice asks Carol for a key to give
to Bob.  Bob uses that key send an email directly to Carol asking for a
key for him to use that Alice doesn't know.  Bob uses that second key
for future communication with Carol.  In Horton, Bob has no way to get
that second object reference from Carol without a message being routed
through Alice.

________________________
Alan Karp
Principal Scientist
Virus Safe Computing Initiative
Hewlett-Packard Laboratories
1501 Page Mill Road
Palo Alto, CA 94304
(650) 857-3967, fax (650) 857-7029
https://ecardfile.com/id/Alan_Karp
http://www.hpl.hp.com/personal/Alan_Karp