Video Encryption/Decryption Gaming Project in C++

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3 months ago

#include <opencv2/opencv.hpp>
#include <iostream>

using namespace cv;
using namespace std;

// XOR encryption/decryption function
void xorCipher(Mat& frame, char key) {
    frame.forEach<uchar>([&key](uchar& pixel, const int* position) {
        pixel ^= key; // XOR pixel value with key
    });
}

int main() {
    // Open video file
    VideoCapture cap("path/to/your/video.mp4");

    if (!cap.isOpened()) {
        cerr << "Error: Could not open video file!" << endl;
        return -1;
    }

    // Create windows for displaying the original and processed video
    namedWindow("Original Video", WINDOW_AUTOSIZE);
    namedWindow("Encrypted Video", WINDOW_AUTOSIZE);

    char key = 'K'; // Encryption/Decryption key

    while (true) {
        Mat frame;
        cap >> frame; // Capture a new frame from the video

        if (frame.empty()) {
            break; // Exit loop if there are no more frames
        }

        Mat encryptedFrame = frame.clone(); // Clone the frame for encryption
        xorCipher(encryptedFrame, key); // Encrypt the frame

        imshow("Original Video", frame); // Display the original frame
        imshow("Encrypted Video", encryptedFrame); // Display the encrypted frame

        int keyPressed = waitKey(30); // Wait for 30 ms for a key press
        if (keyPressed == 'q') {
            break; // Exit if 'q' is pressed
        }
    }

    cap.release(); // Release video file
    destroyAllWindows(); // Close all OpenCV windows

    return 0;
}

#include <opencv2/opencv.hpp>

#include <iostream>

using namespace cv;

using namespace std;

// XOR encryption/decryption function

void xorCipher(Mat& frame, char key) {

frame.forEach<uchar>([&key](uchar& pixel, const int* position) {

pixel ^= key; // XOR pixel value with key

});

}

int main() {

// Open video file

VideoCapture cap("path/to/your/video.mp4");

if (!cap.isOpened()) {

cerr << "Error: Could not open video file!" << endl;

return -1;

}

// Create windows for displaying the original and processed video

namedWindow("Original Video", WINDOW_AUTOSIZE);

namedWindow("Encrypted Video", WINDOW_AUTOSIZE);

char key = 'K'; // Encryption/Decryption key

while (true) {

Mat frame;

cap >> frame; // Capture a new frame from the video

if (frame.empty()) {

break; // Exit loop if there are no more frames

}

Mat encryptedFrame = frame.clone(); // Clone the frame for encryption

xorCipher(encryptedFrame, key); // Encrypt the frame

imshow("Original Video", frame); // Display the original frame

imshow("Encrypted Video", encryptedFrame); // Display the encrypted frame

int keyPressed = waitKey(30); // Wait for 30 ms for a key press

if (keyPressed == 'q') {

break; // Exit if 'q' is pressed

}

cap.release(); // Release video file

destroyAllWindows(); // Close all OpenCV windows

return 0;

}

Explanation

Include Libraries:
- #include <opencv2/opencv.hpp>: Includes OpenCV for video processing.
- #include <iostream>: Used for input and output operations.
XOR Cipher Function (xorCipher):
- void xorCipher(Mat& frame, char key): Function that applies XOR encryption/decryption to the video frame.
- frame.forEach<uchar>([&key](uchar& pixel, const int* position): Iterates through each pixel in the frame and XORs it with the given key.
Open Video File:
- VideoCapture cap("path/to/your/video.mp4");: Opens the video file for reading.
- Checks if the file was opened successfully. If not, prints an error message and exits.
Create Windows:
- namedWindow("Original Video", WINDOW_AUTOSIZE);: Creates a window to display the original video.
- namedWindow("Encrypted Video", WINDOW_AUTOSIZE);: Creates a window to display the encrypted video.
Processing Loop:
- Captures frames from the video and encrypts each frame using the XOR cipher.
- Displays both the original and encrypted frames.
- waitKey(30); waits for 30 milliseconds for a key press. If ‘q’ is pressed, the loop exits.
Cleanup:
- cap.release();: Releases the video file resource.
- destroyAllWindows();: Closes all OpenCV windows.

Explanation

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