The document outlines a teaching aid for a course on cryptography and network security, focusing on public key cryptography. It covers mathematical concepts such as prime numbers, primality testing, and key management strategies including RSA, Diffie-Hellman, and ElGamal cryptosystems. Additionally, it includes resources such as worksheets and PowerPoint demonstrations for better understanding.

1. CS8792 –
CRYPTOGRAPHY AND
NETWORK SECURITY
~ S. Janani, AP/CSE
KCET
Unit III - Public key

2. Unit III – Public Key Cryptography
Topic Teaching Aid Activity
Mathematics of Asymmetric cryptography – Primes, Primality Testing,
Factorization
BB -
Eulers Totient Function, Fermats and Eulers theorem BB Worksheet
Chinese Remainder Theorem, Exponentiation and Logarithm PPT Worksheet
Asymmetric Key Ciphers BB -
RSA cryptosystem, BB Worksheet
Key Distribution – Key Management PPT Demo
Diffie Hellman Key Exchange PPT Demo, Worksheet
Elgamal Cryptosystem BB Demo
Elliptic curve arithmetic, Elliptic curve cryptography PPT Demo

4. Mathematics of Asymmetric cryptography –
Primes, Primality Testing, Factorization