Cryptography and Network Security is a vital subject in the 7th-semester Computer Science curriculum that introduces students to the fundamental concepts of securing information and communication systems. The course focuses on cryptographic principles, encryption techniques (both classical and modern), secure key distribution, authentication methods, and real-world security protocols.

Students will explore symmetric and asymmetric cryptography (e.g., DES, RSA, ECC), cryptographic hash functions, and protocols such as TLS, IP Security, and secure email mechanisms like S/MIME and PGP. Through theoretical learning and hands-on labs, the course prepares students to apply cryptographic techniques and analyze network security mechanisms used to safeguard digital communications in today's connected world.