Reuse Enc_Parameters and PIR_Parameters

[cnquang]

How can we store and reuse Enc_Parameters and PIR_Parameters?
Because if we execute another time, the Enc_Parameters and PIR_Parameters will change. And we cannot decode previous replies anymore.

[sga001]

You can write code to do just that. Store the parameters. Did you encounter a problem with that?

[cnquang]

Below is my code to store and read pir_params. I successful save the pir_params.bin file, but when I read the pir_params.bin file in another time. It is show an error: Segmentation fault (core dumped) when I run this line: print_pir_params(pir_params);

void save_pir_parameters(const PirParams &pir_params, const string &filename) {
try {
ofstream file(filename, std::ios::binary);
if (file.is_open()) {
// Serialize the PirParams structure to the file
file.write(reinterpret_cast<const char*>(&pir_params), sizeof(PirParams));
file.close();
cout << "PirParams saved to " << filename << endl;
} else {
cerr << "Error: Unable to open file for writing." << endl;
}
} catch (const exception &e) {
cerr << "Exception: " << e.what() << endl;
}
}

PirParams load_pir_parameters(const string &filename) {
PirParams pir_params;

try {
    ifstream file(filename, std::ios::binary);
    if (file.is_open()) {
        // Deserialize the PirParams structure from the file
        file.read(reinterpret_cast<char*>(&pir_params), sizeof(PirParams));
        file.close();
        cout << "PirParams loaded from " << filename << endl;
    } else {
        cerr << "Error: Unable to open file for reading." << endl;
    }
} catch (const exception &e) {
    cerr << "Exception: " << e.what() << endl;
}

return pir_params;

}