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ITrust workshop
Glasgow 2-4 Sep 2002 | | |
 Theo - Building trust on the grid
Grid: Infrastructure that logically couples distributed resources
Generalize to virtual organization
Formation-use-disolve cycle, compare with web services:
- Web servicves: heavyweight setup, lightweight processes
- Grid: lightweight setup, heavyweight processes (possible 1/setup)
 Standards
XML
WSDL
WS-Policy
WSFL/XLANG
...
SOAP
WS-security
WS-Polict + WS-Trust + WS-Privacy (planned)
WS-Secure-conversation + WS-Federation + WS-Authorization
WS vs Grid
Discovery of persistent services
...
Transient service instance creation
Dynamic service instance creation
Lifelong management
Standards based on WS - OSGA reference architecture
Extensible
 Why?
PELLUCID
SWAD-Europe
GRASP
CORAS
iTrust WG ... LeGE-WG
Trust defn
Ternary relation A trusts B for service X
Measurable (or quantifiable) belief of A that B behaves dependably for specified peiod P within specified
context C in relation to service X.
(isn't that a 5+-way relation)
But how to measure trust?
(Grid requirement here)
...
Trust inclinations...
Trust intentons... (c.f. philosophical discussion)
From the floor: only thing that matters is the decision that is made
...: measurable vs quantifiable debate
List of trust mgmt issues
Resource brokerage
Publish, u[pdate, exchange policies
... more (See slide)
Components
Analysis
Logic
Management
Modelling
...
See slide
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