CSE 390: Introduction to Cryptography (Spring 2018)

Instructor:	Omkant Pandey (Office hours: Tu-Th 1pm - 2:30pm in 345 NCS)
TA:	Rohit Chatterjee (rochatterjee [at] cs.stonybrook.edu)
Time:	Tuesdays & Thursdays, 2:30pm - 3:50pm
Location:	Room 2311, Old CS Building
Contact:	omkant [at] cs.stonybrook.edu
	Important: When sending me an email about the course, make sure your title starts with "[CSE 390]" (without the quotes). Mislabeled or unlabeled emails will, most likely, not be read.

Announcements

All announcements will be made through BlackBoard.

Course Description

In this class, we will introduce some topics in modern cryptography. The course is theoretical in nature, with emphasis on proofs and algorithmic reductions (even when discussing applied topics). No prior background in cryptography is assumed. However, students should have some mathematical maturity and be comfortable working with definitions and proofs.

Some of the topics we will cover include: one-way functions, pseudo-randomness, symmetric encryption, hash functions, message integrity, digital signatures, and public-key encryption. Time permitting, we may also dive into zero-knowledge proofs and secure multiparty computation.

Grading Policy

There will be four in class examinations, at regular intervals throughout the duration of the course (i.e. one every five lectures or so).
Your top three scores in these exams will account for the entirety of your grade.
No make up exams will be arranged.

Lecture Schedule

Date	Topic	Slides	KL Chapter
1/23/2018	Introduction	L01	Ch. 1
1/25/2018	Shannon, Perfect Secrecy	L02	Ch. 2
1/30/2018	Indistinguishable Security	X	§3.1, §3.2
2/01/2018	Encryption via PRGs	X	§3.3
2/06/2018	CPA-Security via PRFs	X	§3.4,§3.5
2/08/2018	Finish CPA-Security	X	§3.5
2/13/2018	First In-Class Exam
2/15/2018	Exam Solutions
2/20/2018	Modes of Encryption	X	§3.6
2/22/2018	Message Authentication Codes	X	Ch. 4
2/27/2018	Hash Functions	X	Ch. 5
3/01/2018	No Class	X	—
3/06/2018	One-Way Functions	X	§7.1
3/08/2018	Hard Core Predicates	X	§7.3, §7.4
3/13/2018	--Spring Recess--
3/15/2018	--Spring Recess--
3/20/2018	Second In-Class Exam
3/22/2018	Exam Solutions
3/27/2018	PRF/PRP from PRGs	X	§7.5, §7.6
3/29/2018	Number Theory Background	X	§8.1, §8.3.1
4/03/2018	Hardness Assumptions	X	§8.2--§8.4
4/05/2018	Key Management and Public-Key Revolution	X	Ch. 10
4/10/2018	Public-Key Encryption - I	X	§11.1--§11.4
4/12/2018	Third In-Class Exam
4/17/2018	Exam Solutions
4/19/2018	Public-Key Encryption - II	X	§11.4, §11.5
4/24/2018	Digital Signatures - I	X	§12.1--§12.4
4/26/2018	Digital Signatures - II	X	§12.5--§12.7
5/01/2018	Advanced Topics (Trapdoor, Secret Sharing)	X	§13.1—§13.3
5/03/2018	Course Review, Further Readings	X	---
5/???/2018	Final Exam

Text Books and Lecture Notes

The prescribed textbook for this course is Katz and Lindell's text Introduction to Modern Cryptography (not free, some copies available in the library).
Here are some other excellent (and mostly free) resources:

Boneh and Shoup's upcoming book: A Graduate Course in Applied Cryptography
Lecture notes by Pass-Shelat, Bellare-Goldwasser and Bellare-Rogway
Goldreich's book: Foundations of Cryptography Vol. 1 and Vol. 2 (some fragments are freely available)
Nigel Smart's book: Cryptography, An Introduction
Menezes, Oorschot, and Vanstone's book: Handbook of Applied Cryptography
Rosulek's upcoming book: The Joy of Cryptography

Misc

Note: If you have a physical, psychological, medical or learning disability that may impact on your ability to carry out assigned course work, please contact the staff in the Disabled Student Services office (DSS), Room 133, Humanities, 632-6748v/TDD. DSS will review your concerns and determine with you what accommodations are necessary and appropriate. All information and documentation of disability are confidential.

Note: Each student must pursue his or her academic goals honestly and be personally accountable for all submitted work. Representing another person's work as your own is always wrong. Any suspected instance of academic dishonesty will be reported to the Academic Judiciary. For more comprehensive information on academic integrity, including categories of academic dishonesty, please refer to the academic judiciary website at http://www.stonybrook.edu/uaa/academicjudiciary/.