CRYPTOGRAPHY AND NETWORK SECURITY

1) What is an attack? Types of attacks,security services and mechanisms?

What are the non-cryptographic protocol vulnerabilities?

DOS, DDOS and Session Hijacking?

2)What is secret key cryptography?

Explain DES ?

Explain IDEA with neat diagram?

Explain AES ?

3)Explain Chinese Remainder theorem and fermatis theorem?

4)principles of public key cryptography?

Explain about RSA algorithm and  Diffie-Hellman Key Exchange?