برمجة شفرة فجنير Vigenere Cipher

برمجة شفرة فجنير Vigenere Cipher :

العالم الفرنسي بليز دي فجنير

طريقة التشفير Vigenere Cipher:

برنامج Vigenere Cipher بلغة C:

#include<stdio.h>

#include<string.h>

 

int main(){

    char msg[] = "THECRAZYPROGRAMMER";

    char key[] = "HELLO";

    int msgLen = strlen(msg), keyLen = strlen(key), i, j;

 

    char newKey[msgLen], encryptedMsg[msgLen], decryptedMsg[msgLen];

 

    //generating new key

    for(i = 0, j = 0; i < msgLen; ++i, ++j){

        if(j == keyLen)

            j = 0;

 

        newKey[i] = key[j];

    }

 

    newKey[i] = '\0';

 

    //encryption

    for(i = 0; i < msgLen; ++i)

        encryptedMsg[i] = ((msg[i] + newKey[i]) % 26) + 'A';

 

    encryptedMsg[i] = '\0';

 

    //decryption

    for(i = 0; i < msgLen; ++i)

        decryptedMsg[i] = (((encryptedMsg[i] - newKey[i]) + 26) % 26) + 'A';

 

    decryptedMsg[i] = '\0';

 

    printf("Original Message: %s", msg);

    printf("\nKey: %s", key);

    printf("\nNew Generated Key: %s", newKey);

    printf("\nEncrypted Message: %s", encryptedMsg);

    printf("\nDecrypted Message: %s", decryptedMsg);

 

return 0;

}

برنامج Vigenere Cipher بلعة ++C:

#include<iostream>

#include<string.h>

 

using namespace std;

 

int main(){

    char msg[] = "THECRAZYPROGRAMMER";

    char key[] = "HELLO";

    int msgLen = strlen(msg), keyLen = strlen(key), i, j;

 

    char newKey[msgLen], encryptedMsg[msgLen], decryptedMsg[msgLen];

 

    //generating new key

    for(i = 0, j = 0; i < msgLen; ++i, ++j){

        if(j == keyLen)

            j = 0;

 

        newKey[i] = key[j];

    }

 

    newKey[i] = '\0';

 

    //encryption

    for(i = 0; i < msgLen; ++i)

        encryptedMsg[i] = ((msg[i] + newKey[i]) % 26) + 'A';

 

    encryptedMsg[i] = '\0';

 

    //decryption

    for(i = 0; i < msgLen; ++i)

        decryptedMsg[i] = (((encryptedMsg[i] - newKey[i]) + 26) % 26) + 'A';

 

    decryptedMsg[i] = '\0';

 

    cout<<"Original Message: "<<msg;

    cout<<"\nKey: "<<key;

    cout<<"\nNew Generated Key: "<<newKey;

    cout<<"\nEncrypted Message: "<<encryptedMsg;

    cout<<"\nDecrypted Message: "<<decryptedMsg;

 

return 0;

}