• Time: Monday, Wednesday, and Friday (11:30 am - 12:20 pm)
• Location: LWSN B151

• Hemanta K. Maji
• Office: LWSN 1177
• Maji's office hours: Thursday 09:30am-10:20am, LWSN 1177

On Brightspace

• Ansh Aggarwal (email) and Albert Yu (email)
• Ansh's office hours: Wednesday 12:30pm-1:30pm, DSAI B022
• Albert's office hours: Tuesday 4:00pm-5:00pm, DSAI B022

• Topic 00: Course Policy and Outline (Week 01)
  
• Topic 01: One-time Pad for Bit-strings (Week 01) ChatGPT Slides
  Recommended reading: Sections 2.1 and 3.3 of A Graduate Course in Applied Cryptography, Dan Boneh and Victor Shoup
  
• Topic 02: Mathematical Basics (Probability) (Week 01) ChatGPT Slides
  A recommended reference: Section 5.3 of An Introduction to Mathematical Cryptography, Jeffrey Hoffstein, Jill Pipher, and Joseph H. Silverman
  
• Homework 1 [Source Files: file1 file2] (Due Date: 06 September, 2026)
  
• Discussion. From One-Time Pads to Modern Cryptography and Abstract Mathematics
  
• Topic 03: Groups and Fields (Week 02) ChatGPT Slides
  A recommended reference: Sections 2.5 and 1.5 of An Introduction to Mathematical Cryptography, Jeffrey Hoffstein, Jill Pipher, and Joseph H. Silverman
  
• Homework 2 [Source Files: file1 file2] (Due Date: 20 September, 2026)
  
• Topic 05: Repeated Squaring (Week 03) ChatGPT Slides
  
• Topic 06: Private-key Encryption (Definition and Security of One-time Pad) (Week 03) ChatGPT Slides
  
• Topic 07: Graph Representation (Week 03) ChatGPT Slides
  
• Topic 08: Shamir Secret-sharing Scheme (Introduction) (Week 04) ChatGPT Slides
  
• Topic 09: Shamir Secret-sharing Scheme (Lagrange Interpolation) (Week 04) ChatGPT Slides
  
• Topic 10: Shamir Secret-sharing Scheme (Security) (Week 05) ChatGPT Slides
  
• Homework 3 [Source Files: file1 file2] (Due Date: 04 October, 2026)
  
• Topic 11: Efficient Algorithms (Week 05) ChatGPT Slides
  
• Topic 12: Generating Large Primes (Week 06) ChatGPT Slides
  A recommended reference: Sections 3.4 of An Introduction to Mathematical Cryptography, Jeffrey Hoffstein, Jill Pipher, and Joseph H. Silverman
  PRIMES is in P: GPT-generated summary of the AKS Primality-testing Algorithm
  
• Topic 13: Extended GCD Algorithm (Week 06) ChatGPT Slides
  
• Topic 14: One-way Functions (Week 07) ChatGPT Slides
  
• Homework 4 [Source Files: file1 file2] (Due Date: 18 October, 2026)
  
• Topic 15: Pseudo-randomness Generators (Week 07) ChatGPT Slides
  
• Fall Break (Week 08)
  
• Topic 16: Encrypting Long Messages (Week 08) ChatGPT Slides
  
• Topic 17: Random Functions and Encrypting Long Messages (Week 08) ChatGPT Slides
  
• Topic 18: Pseudorandom Functions (Week 09) ChatGPT Slides
  
• Topic 19: Message Authentication Codes (Week 09) ChatGPT Slides
  

CS 35500 ( Spring 2026, Fall 2025, Spring 2025, Fall 2024, Spring 2024, Fall 2022, Spring 2021, Fall 2020, Spring 2020, Fall 2018, Fall 2017 )

CS 55500 ( Fall 2023, Fall 2021, Fall 2016 )

• Lecture Notes on Cryptography, Shafi Goldwasser and Mihir Bellare
• A Course in Cryptography, Rafael Pass and Abhi Shelat
• Introduction to Cryptography, Jonathan Katz

• A Graduate Course in Applied Cryptography Dan Boneh and Victor Shoup
• Introduction to Modern Cryptography, Second Edition, Jonathan Katz and Yehuda Lindell
• Foundations of Cryptography: Volume 1, Basic Tools, Oded Goldreich
• Foundations of Cryptography: Volume 2, Basic Applications, Oded Goldreich