• Overview of delegation of privileges
• Secure DNS key exchange delegation
• Identity delegation in a commercial product
• Delegation taxonomy in a research system
• Delegation in a capabilities based language, E - a descendent of the Electric Communities project that is still limping along in open source.

All but the last are based on PK/RSA type encryption. An interesting alternative mechanism is proposed by the Identity based encryption group at Stanford.

Doesn't make any sense? Don't worry about it.
1:36:50 PM