![]() Perform encryption and decryption of message using the shared secret key (Use simple XOR operation to encrypt and decrypt the message.) ![]() Establish a secret key K between client and server by exchanging the messages as shown in below figure.Ĭompute common secret key between client and server using Diffie-Hellman key exchange technique.Encrypt a given message M with different keys and distribute PU to each other.Write a program to perform the following using Playfair cipher technique Compute the frequency of occurrence of each alphabet in both plaintext.txt and ciphertext.txt and tabulate the results.Encrypt the characters of plaintext.txt and store the corresponding ciphertext characters in ciphertext.txt.Construct an input file named plaintext.txt (consisting of 1000 alphabets, without any space or special characters).The program should support the following : ![]() Perform encryption and decryption using mono-alphabetic cipher. ![]() This repository contains programs implemented in Cryptography and network security Lab in my 7th semester of SIT(VTU).
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