Outline for October 20, 2025

Reading: text, §12.5.1, 16.1–16.2
Assignments: Homework 2, due October 22; Project selection, due November 7

1. Greetings and Felicitations!

2. Privacy-enhanced email

3. Access Control Lists
   1. Full access control lists
   2. Abbreviated access control lists
   3. Issues in the way lists work
   4. Revocation issue

4. Capabilities
   1. Capability-based addressing
   2. Capabilities as security mechanisms

Matt Bishop Office: 2209 Watershed Sciences Phone: +1 (530) 752-8060 Email: mabishop@ucdavis.edu

ECS 235A, Computer and Information Security Version of October 20, 2025 at 12:18PM

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