This repository contains a collection of programs and algorithms commonly used in Cryptography and Network Security (CNS) labs. Each file implements a specific cryptographic or security-related algorithm. Below is a detailed description of the directory structure and the contents of the repository.

└── muralimallela-cns_lab/
    ├── 10_BlowFish_algorithm.java
    ├── 11_Rijndael_algorithm.java
    ├── 1_XOR_with_0.c
    ├── 2_AND_XOR_127.c
    ├── 3_a_ceaser_cipher.c
    ├── 3_b_substitution_cipher.c
    ├── 3_c_hill_cipher.java
    ├── 4_RSA_algorithm.java
    ├── 5_Diffie_Hellman_Key_Exchange_algorithm.java
    ├── 6_SHA_1_algorithm.java
    ├── 7_MD5_algorithm.java
    ├── 8_Hello_world_BlowFish.java
    └── 9_DES_algorithm.java

• 10_BlowFish_algorithm.java: Implementation of the Blowfish encryption algorithm.
• 11_Rijndael_algorithm.java: Implementation of the Rijndael algorithm (basis for AES).
• 3_c_hill_cipher.java: Implementation of the Hill cipher, a polygraphic substitution cipher.
• 4_RSA_algorithm.java: Implementation of the RSA encryption and decryption algorithm.
• 5_Diffie_Hellman_Key_Exchange_algorithm.java: Demonstrates the Diffie-Hellman key exchange process.
• 6_SHA_1_algorithm.java: Implementation of the SHA-1 hashing algorithm.
• 7_MD5_algorithm.java: Implementation of the MD5 hashing algorithm.
• 8_Hello_world_BlowFish.java: A simple "Hello World" implementation of the Blowfish algorithm.
• 9_DES_algorithm.java: Implementation of the Data Encryption Standard (DES) algorithm.

• 1_XOR_with_0.c: Demonstrates the XOR operation with 0.
• 2_AND_XOR_127.c: Demonstrates bitwise AND and XOR operations with 127.
• 3_a_ceaser_cipher.c: Implementation of the Caesar cipher.
• 3_b_substitution_cipher.c: Implementation of a simple substitution cipher.

• Java Compiler: Ensure you have JDK installed to compile and run the .java files.
• C Compiler: GCC or any standard C compiler is required to compile the .c files.

1. Clone the repository:

   git clone https://github.com/muralimallela/CNS_Lab.git .

2. Navigate to the directory:

   cd CNS_Lab

3. Compile and run the required program:
   • For Java programs:

     javac <filename>.java
     java <filename>

   • For C programs:

     gcc <filename>.c -o <output_name>
     ./<output_name>

If you would like to contribute to this repository, feel free to fork the project and submit a pull request.

This repository is open-source and available under the MIT License.