1. 1 CSE 788.11 Cryptography and Security Ten H. Lai Autumn 2009

2. 2 Instructor: Steve Lai –Office: DL 581 –Office hours: TR 2:00-3:00 p.m. –Email: lai@cse.ohio-state.edulai@cse.ohio-state.edu –Home page: www.cse.ohio-state.edu/~laiwww.cse.ohio-state.edu/~lai Prerequisite: CSE 651 or 794Q or 788Wi08, or equivalent, or strong interest in cryptography and security.

3. 3 Topics Introduction –Basics of cryptography –Homomorphic encryption Cryptographic protocols –Identification schemes –Commitment schemes –Electronic elections –Digital cash

4. 4 Applications of homomorphic encryption –Watermarking/fingerprinting protocols –Electronic auctions and lotteries –Protection of mobile agents –Oblivious transfer –Privacy preserving data mining –Others Other topics on cryptography and security, e.g., –Hash visualization, using iPhones for human- verifiable authentication –Can machine learning be secure?

5. 5 Textbook Chapter 4, Cryptographic Protocols, Hans Delfs & Helmut Knebl Introduction to Cryptography: Principles and Applications (2 nd edition) Springer, 2007 Recent papers in the literature

6. 6 Grading plan Class attendance and participation (40%) –Please be in class on time! Slides and presentation (60%) Power point file due: –Draft, two day before your presentation –Final version, December 3