Scarce objects -- bearer certificates for usage control

[szabo at szabo.best.vwh.net]

(Bob -- feel free to forward this to whatever list(s) you think might be
interes
ted -- Nick).

I desribe an architecture providing usage control (as opposed to access
control)
 for mutually suspicious objects (i.e., objects interacting across trust
boundar
ies), using bearer certificates:

http://szabo.best.vwh.net/scarce.html


Nick Szabo
http://szabo.best.vwh.net/

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-- 
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R. A. Hettinga <mailto: rah at ibuc.com>
The Internet Bearer Underwriting Corporation <http://www.ibuc.com/>
44 Farquhar Street, Boston, MA 02131 USA
"... however it may deserve respect for its usefulness and antiquity,
[predicting the end of the world] has not been found agreeable to
experience." -- Edward Gibbon, 'Decline and Fall of the Roman Empire'