Given, Encrypt string "SEE SOME LIGHT IN THE DARKNESS, BUT IT MAY POSSIBLY FLICKER OUT" using PlayFair cypher
Use playfair cypher to encrypt using the given above key.
Encrypt message: OAAORUOHKHKPGCPKSBSEGDAOEDMUKQQRWTROAKFHZDGKDIAEFZQY
According to question you didn't ask for explanation, but if you want explanation please ask in the comment and I'll post explanation in comment.
Using the Playfair matrix below, encrypt this message: "SEE SOME LIGHT IN THE DARKNESS, BUT IT...
Question 1: Encrypt the message “attackhmsfleet” using Playfair Cipher with key =”security”. Use filler “x” and use “I” for the pair “I/J” in the table. Question 2: Using Vigenere cipher, encrypt the message “sendmoremoney” using the key “cipher”.
Can i get Playfair Cipher for python 3 that encrypts a message and decrypts it, could you possibly make it as simple as you can without losing functionality. please include comments, that would help me better understand Example of PlayFair Cipher: https://en.wikipedia.org/wiki/Playfair_cipher The Playfair cipher uses a 5 by 5 table containing a key word or phrase. Memorization of the keyword and 4 simple rules was all that was required to create the 5 by 5 table and use the...
5. Using the modified rail fence algorithm (matrix size 5 x 5), encrypt the following message. Plaintext message: Defend the east and south wall Use the following key word to Also show your results after 1st and 2nd stage. What is the final encrypted message? encrypt: 31254
Cryptography 4. Consider a transposition cipher that needs to encrypt a message of length 15 using [3, 1, 4, 5, 2] as the key. a) (5 pts) Show the process of encryption using the matrix representation of the key. You may pick any message of length 15 as your choice. b) (5 pts) Repeat Part (a) for the process of decryption. The output of the decryption should be the original message.
Using a substitution cipher that skips by 7 characters, encrypt the message COMPUTERSCIENCE4ALL. For the input alphabet use 26 uppercase letters followed by 10 digits numbered 0 through 9. I have encrypted an English phrase using a substitution cipher that has an input alphabet of 26 uppercase letters. My cipher has skipped by N letters. You may assume that the most common letters in the English language are E T A O I N Sentence: LJWRPDNBBCQNARPQCJWBNA
C Programming - RSA Encryption I've tried to write a program that can encrypt and decrypt strings using RSA and want to be able to integrate it into a header file which contains codes for compression, linked list etc.. However, the use of global variables and fixed size of encryption is making it hard to do so Can someone please help me modify the following the code? I want to be able to just pass it in a string to...
Write a psuedocode for this program. #include <iostream> using namespace std; string message; string mappedKey; void messageAndKey(){ string msg; cout << "Enter message: "; getline(cin, msg); cin.ignore(); //message to uppercase for(int i = 0; i < msg.length(); i++){ msg[i] = toupper(msg[i]); } string key; cout << "Enter key: "; getline(cin, key); cin.ignore(); //key to uppercase for(int i = 0; i < key.length(); i++){ key[i] = toupper(key[i]); } //mapping key to message string keyMap = ""; for (int i = 0,j...
68 4 64 73 1 5. Matrix C is a coded message where C61 4 52 51 0 109 5 120 170 5 You know that each letter of the original message was first replaced with the number corresponding to its placement in the English alphabet (eg. E was replaced with 5) and any spaces in the message were replaced with zeroes. Then the message was encoded by multiplying the message matrix, M, on the left by the coding matrix,...
MOdify the program below to do 3x3 matrix mutiplications: #include <iostream> #include <cstdlib> #include <pthread.h> using namespace std; int A[3] [3] = {{1,2},{3,4}}; int B[3] [3] = {{5,6},{7,8}}; int C[3] [3]; struct Position{ int row; int col; }; void *CalculateElement(void *pos){ Position *p = (Position *)pos; C[p->row][p->col] = 0; for(int i = 0; i < 3; i++){ C[p->row][p->col] += A[p->row][i]*B[i][p->col]; } pthread_exit(NULL); } const int NUM_THREADS = 4; int main() { ...
Hill cypher Exercise: Execute the next cell to produce a message encrypted using the Hill cipher method [4]: cipher make_cipher cipher out [4]: 129, 41, 42, 75, 94, 103, 34, 43, 48, 44, 44, 64, 18, 23, 23, 80, 95, 116, 48, 48, 63, 46, 46, 66, 78, 87, 108, 61, 77, 85, 54, 66, 81, 70, 75·94, 58, 72, 87, 34, 50, 51, 86, 106, 120, 79,97, 116 58, 67, 83 The message starts with the word "CLASSIFIED use...