hi i m vasumathi i would like to get details on mphil thesis cryptography topics in computer science

There are various theses topics for cryptography, some are:
1. Zero Knowledge
2. SSL and poodle attack
3. Cryptographic Game Theory
4. Evolutionary Computing in Cryptanalysis and cryptography
4. Protocol Security
5. Steganography and water marking etc.
These are some broad titles, you need to read and find out some specific topic for your theses.