Network security and encryption – Assignment 2

Hello to everybody who’s reading this!

A few days ago I finished a huge assignment according to my master course.
I wish to share the things I have written. The contents are roughly:
- Simple ciphers like Caesar and Vigenere
- Symmetric–Key encryption with AES and DES
- Modular arithmetic (mathematical derivation of some statements using Eulers theorem and Extended Euler)
- Discovering divisibility rules
- Public key encryption – RSA (generating RSA key, encrypt and decrypt manually [only some basic matlab functions are used])
- Diffie-Hellman Key Exchange Protocol
- Shamir’s No-Key Protocol
- Cryptographical Protocols – Message Integrity (HASH Algorithms like md5)
- Authentification by Challenge and Response
- Anonymous Mail Communication
- Steganography

Enjoy to read it!

Update 05.01.10: File was updated because the previous one was not complete…
Click here to read the assignment written by Micha Koller