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css_lab

This repository has codes for my Computer Systems Security study. The list is as follows:

  1. Implementation of Affine Cipher
  2. Implementation of Playfiar Cipher
  3. Multiplication of 2 polynomials using a given irreducible polynomial (GF(2^8))
  4. To find primitive roots of a group <Zp*,x>
  5. Implementation of RSA algorithm to provide (a) Confidentiality (b) Authenticity
  6. To implement Diffie-Hellman Key Exchange algorithm

#Procedure to run Run the file "main.java" and type in the appropriate practical number.

#Output For compilation and execution, I used the IDE: "IntelliJ: IDEA". Any IDE with Java 8 should work fine.

#Most of the values are not hardcoded, but for those that are, I have provided detailed documentation that can help understand limitations of each algorithm against certain test cases.