Cryptography I

Korshub take

Taught by Stanford University, Cryptography I is a foundational, long-running course that has pulled in 541,753 learners — a scale that reflects how central cryptography has become to modern computing. It is a rigorous, technical treatment of how information actually gets secured, not a surface-level security-awareness course.

You'll dig into encryption standards like AES and public-key cryptography, key management, and cryptographic protocols, all grounded in the underlying algorithms, arithmetic, and probability that make encryption work. It is the kind of course that turns cryptography from a buzzword into something you can reason about mathematically.

Who should take it

• Software engineers and security professionals wanting real cryptographic depth
• Computer science students building a security specialization
• Anyone who wants to understand encryption beyond the marketing terms

Expect genuine mathematical rigor here — this rewards comfort with algorithms and probability.