1. AAA-Arch Authentication Schemes
Stephen Farrell
John Vollbrecht
Joe Salowey
Standish Stewart

2. What we’re doing Starting work...
Similar to what we did with authorization
Analyse authentication schemes
no invention though!
Figure out some models
Match those with the authorization models

3. Factors Communications paths (topology)
Establishes shared secrets or not
Requires time synchronisation or not
Mutual authentication or not
Type of pre-established data (root info, biometrics, shared-secrets)
Allows impersonation or not

4. User -> Auth. Server AS
User
Application

5. App. -> Auth. Server AS
User
Application

6. Triangle? AS
User
Application