Consider the message '' WHY DONT YOU'' and the key =KEYWORD. Encrypt this message with the...
Consider the message '' WHY DONT YOU'' and the key =KEYWORD. Encrypt this message with the play fair cipher. The code answer should be " YL EA KT QO KI/J
Homework Answers
Table is:-
K E Y W O
R D A B C
F G H I/J L
M N P Q S
T U V X Z
Encrypting the message:- WH YD ON TY OU
WH is on a rectangle - YI/J
YD is on a rectangle - EA
ON is on a rectangle - ES
TY is on a rectangle - VK
OU is on a rectangle - EZ
Therefore encrypted code is YI/J EA ES VK EZ
Add Answer to:
Consider the message '' WHY DONT YOU'' and the key =KEYWORD.
Encrypt this message with the...
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Write helpful comments for the following code: use Vigenere cipher tech to encrypt and decrypt message...
Write helpful comments for the
following code: use Vigenere cipher tech to encrypt and decrypt
message
The code:
#include<stdio.h>
#include <stdlib.h>
char arr[26][26];
char message[22], key[22], emessage[22], retMessage[22];
int findRow(char);
int findColumn(char);
int findDecRow(char, int);
int main()
{
int i = 0, j, k, r, c;
k = 96;
for (i = 0; i<26; i++)
{
k++;
for (j = 0; j<26; j++)
{
arr[i][j] = k++;
if (k == 123)
k = 97;
}
}
printf("\nEnter message\n");
fgets(message, 22,...
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Why should you periodically change the key used to encrypt messages? What attack is more likely...
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C++ Code
"For two thousand years, codemakers have fought to preserve secrets while codebreakers have tried their best to reveal them." - taken from Code Book, The Evolution of Secrecy from Mary, Queen of Scots to Quantum Cryptography by Simon Singh.The idea for this machine problem came from this book.You will encrypt and decrypt some messages using a simplified version of a code in the book. The convention in cryptography is to write the plain text in lower case letters and the encrypted text in upper case...
1. Encrypt the message howareyou using the affine cipher using the key (7,3). (a) What is the resulting ciphertext? (b) What is the decryption function you can use to decipher each ciphertext character? (c) Use your decryption function to decrypt the message to confirm you get the ciphertext back. 2. Use the ADFGX cipher using the grid below and the keyword "place" to encrypt the plaintext "brandenburggate". FREE GX (a) (b) What is the resulting ciphertext? How does the ADFGC...
Write helpful comments for the
following code: use Vigenere cipher tech to encrypt and decrypt
message
The code:
#include<stdio.h>
#include <stdlib.h>
char arr[26][26];
char message[22], key[22], emessage[22], retMessage[22];
int findRow(char);
int findColumn(char);
int findDecRow(char, int);
int main()
{
int i = 0, j, k, r, c;
k = 96;
for (i = 0; i<26; i++)
{
k++;
for (j = 0; j<26; j++)
{
arr[i][j] = k++;
if (k == 123)
k = 97;
}
}
printf("\nEnter message\n");
fgets(message, 22,...
"For two thousand years, codemakers have fought to preserve secrets while codebreakers have tried their best to reveal them." - taken from Code Book, The Evolution of Secrecy from Mary, Queen of Scots to Quantum Cryptography by Simon Singh.The idea for this machine problem came from this book.You will encrypt and decrypt some messages using a simplified version of a code in the book. The convention in cryptography is to write the plain text in lower case letters and the encrypted text in upper case...
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