Lecture 14: April 29, 2026

Reading: text, §11.4, 12.1
Assignments: Homework 3, due May 11, 2026

1. Greetings and felicitations!

2. Cryptographic Key Infrastructure
   1. Merkle trees
   2. Certificate chains
   3. Certificate, key revocation

3. Attacks
   1. Precomputation
   2. Misordered blocks
   3. Statistical regularities
   4. Type flaw

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

ECS 153A, Computer & Information Security & Privacy I Version of April 29, 2026 at 9:15PM

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