Keystone

What is Keystone?

Keystone is the identity service used by OpenStack for authentication (authN) and high-level authorization (authZ). It currently supports token-based authN and user-service authorization. It is scalable to include oAuth, SAML and openID in future versions. Out of the box, Keystone uses a SQLite DB as an identity store with the option to connect to external LDAP.

Doc

http://launchpad.net/keystone

Code

• http://github.com/openstack/keystone

Releases

• Diablo
  • Core functionality (calls shared by all implementations)
  • Extensions(calls that are specific to the implementation; ie: enabling company "ACME" user, role, and group structure)
• Essex (Keystone is part of OpenStack core for Essex)
  • Call for blueprints
    • User structure (blueprint)
    • AuthZ structure (blueprint)
    • SCIM protocol (blueprint)
• Federated Auth-Z requirements for Zones - FederatedAuthZwithZones

   The Service (ie: nova) shouldn't really care about the Role of the user. But we should be able to go back to the Auth-Z service to say "Can <token> [execute verb] on <some resource>" and get back a True/False from keystone. Nova itself, for example, shouldn't have to remember what capabilities a role has. But this may be cached.