Cryptographic Protocols and Secret Sharing Fundamentals

Modern cryptography extends far beyond basic encryption to solve complex coordination problems between untrusted parties. This course provides a clear, step-by-step introduction to foundational cryptographic protocols that power private computation, key distribution, and distributed security. You will explore how classical theoretical models translate into mechanisms used in modern privacy-preserving technologies and decentralized systems. What you will learn: Understand fundamental terminology and mathematical concepts behind secure interactive protocols. Analyze oblivious transfer mechanisms, including Rabin's protocol and 1-out-of-2 oblivious transfer. Explore mental poker, coin flipping protocols, and secure multi-party function computation. Examine key distribution models and classical structures such as Blom's key pre-distribution scheme. Implement threshold secret sharing using Shamir's secret sharing and Blakley's geometric scheme. Discover modern applications of zero-knowledge concepts and secure distributed threshold systems. The curriculum starts with essential definitions and foundational mathematical properties before walking you through protocol proofs, security models, and practical written exercises. Designed for beginners in applied cryptography and computer science enthusiasts, this text-based guide requires no prior specialized background. Start reading today to build a strong foundation in cryptographic protocols and privacy techniques.