Recorded 25 July 2022. Jonathan Katz of the University of Maryland presents "Introduction to Cryptography III" at IPAM's Graduate Summer School Post-quantum and Quantum Cryptography. Abstract: This lecture will introduce the notions of zero-knowledge proofs, proofs of knowledge, and secure computation. Part III: Suggested readings: Katz & Lindell, "Introduction to Modern Cryptography (3rd edition)," Section 6.6.5 and Lindell, "How to Simulate," https://eprint.iacr.org/2016/046. Learn more online at: https://www.ipam.ucla.edu/programs/summer-schools/graduate-summer-school-on-post-quantum-and-quantum-cryptography/?tab=overview