cer_server.py~

import os
import subprocess

from flask import Flask, request, send_from_directory

app = Flask(__name__)
cert_dir = "./Hhome/"  # Path to the directory storing certificates
fpath = os.path.join(cert_dir, 'server.key')


def get_serverCert():
    subprocess.run(['openssl', 'req', '-x509', '-newkey', 'rsa:2048', '-keyout',
                   f'{fpath}', '-out', 'server.crt', '-days', '365', '-nodes', '-subj "/CN=CertServer"'])

get_serverCert()


@app.route('/<filename>', methods=['GET'])
def download_file(filename):
    if os.path.exists(os.path.join(cert_dir, filename)):
        return send_from_directory(cert_dir, filename, as_attachment=True)
    else:
        return "File not found", 404


if __name__ == '__main__':
    app.run(host="0.0.0.0", port=5000, ssl_context=(
        os.path.join(cert_dir, 'server.crt'), os.path.join(cert_dir, 'server.key'))  # HTTPS