Cryptography and Network Security Lab

List of Experiments / Activities

1. 1Write a JAVA/C program that contains a string (char pointer) with a value \Hello World’. The program should XOR each character in this string with 0 and displays the result.
2. 2Write a JAVA/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.
3. 3Write a Java/C program to perform encryption and decryption 3 using the following algorithms:
4. 4Ceaser Cipher b) Substitution Cipher c) Hill Cipher.
5. 5Write a Java program to implement the DES algorithm logic
6. 6Write a C/JAVA program to implement the BlowFish algorithm logic.
7. 7Write a C/JAVA program to implement the Rijndael algorithm logic.
8. 8Using Java Cryptography, encrypt the text “Hello world” using BlowFish. Create your own key using Java/C keytool.
9. 9Write a Java program to implement RSA Algoithm.
10. 10Implement the Diffie-Hellman Key Exchange mechanism 9 using HTML and JavaScript. Consider the end user as one of the parties (Alice) and the JavaScript application as other party (bob).
11. 11Calculate the message digest of a text using the SHA-1algorithm in JAVA/C.
12. 12Calculate the message digest of a text using the MD5 algorithm in JAVA/C.
13. Note: The Instructor may add/delete/modify/tune experiments, wherever he/she feels in a justified manner It is also suggested that open source tools should be preferred to conduct the lab