Navtelecom messages encoder

Navtelecom_Encoder.cpp

#include <iostream>
#include <iomanip>
#include <vector>
#include <string>

unsigned char xor_sum(unsigned char *buffer, unsigned int length) {
    unsigned char temp_sum = 0;

    while (length-- > 0) {
        temp_sum ^= *buffer++;
    }
    return temp_sum;
}

int main() {
    std::string userInput;
    std::cout << "Enter your input: ";
    std::getline(std::cin, userInput);

    std::vector<unsigned char> buffer1;
    int byteValue;
    for (char &c : userInput) {
        byteValue = int(c);
        buffer1.push_back(static_cast<unsigned char>(byteValue));
    }

    // Construct the second buffer using a vector
    std::vector<unsigned char> buffer2 = {0x40, 0x4e, 0x54, 0x43, 0x00, 0x00, 0x00, 0x00,
                                           0x01, 0x00, 0x00, 0x00, static_cast<unsigned char>(buffer1.size()), 0x00};

    // Calculate the XOR sum of the message data
    unsigned char xorResult = xor_sum(buffer1.data(), buffer1.size()); // checksum

    buffer2.push_back(xorResult);

    // Calculate the XOR sum of the header
    unsigned char xorResult2 = xor_sum(buffer2.data(), buffer2.size());
    buffer2.push_back(xorResult2);

    // Construct the final message by concatenating buffer2 and buffer1
    std::vector<unsigned char> finalBuffer = buffer2;
    finalBuffer.insert(finalBuffer.end(), buffer1.begin(), buffer1.end());

    // Print the final buffer
    std::cout << "Final Buffer: ";
    for (const auto &byte : finalBuffer) {
        std::cout << std::hex << std::setw(2) << std::setfill('0') << static_cast<int>(byte) << "";
    }
    std::cout << std::endl;

    return 0;
}