Program overview
Cryptography may sound mysterious, but it's essentially the study of how to "lock" and "unlock" information. The core skills you'll learn include encryption algorithms, protocol design, and security analysis—think RSA, elliptic curves, quantum cryptography, and more. The curriculum starts with mathematical foundations (number theory, algebra) and gradually delves into cryptographic algorithm implementation, network security protocols, and side-channel attacks and defenses. Chinese universities have unique strengths in this field—for example, the PLA Information Engineering University and Beijing University of Posts and Telecommunications. They not only offer solid theoretical training but also maintain close ties with the military and national security agencies, giving you access to real-world attack and defense scenarios. This major suits students with strong logical thinking, a love for puzzles, and no aversion to math. If you're also interested in military or national security, it's an even better fit.