Cryptography and Network Security LAB

List of Experiments / Activities

1. LAB
2. 1Write a C program that contains a string(char pointer) with a value \Hello World’.The programs should XOR each character in this string with 0 and display the result.
3. 2Write a C program that contains a string (char pointer) with a value \Hello World’. The program should AND or and XOR each character in this string with 127 and display the result.
4. 3Write a Java program to perform encryption and decryption using the following algorithms: a. Ceaser Cipher b. Substitution Cipher c. Hill Cipher.
5. 4Write a Java program to implement the DES algorithm logic.
6. 5Write a C/JAVA program to implement the Blowfish algorithm logic.
7. 6Write a C/JAVA program to implement the Rijndael algorithm logic.
8. 71) Write the RC4 logic in Java Using Java Cryptography, encrypt the text “Hello world” using Blowfish. Create your own key using Java key tool. 2)Write a Java program to implement RSA Algorithm.
9. 81. Implement the Diffie-Hellman Key Exchange mechanism using HTML and JavaScript. 2. Calculate the message digest of a text using the SHA-1 algorithm in JAVA.
10. 9Calculate the message digest of a text using the MD5 algorithm in JAVA.
11. 10Write a java program for Knapsack using Dynamic Programming based solution.
12. Note: The Instructor may add/delete/modify/tune experiments