Add bcrypt_test_db, secure_connection

secure_connection/secure_server.py

@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+"""
+This module facilitates creating an asynchronous SSL server that echoes
+received messages. The server operates using SSL certificates stored in 
+the "server_keys" directory.
+
+Usage:
+    Run the script to initiate the server on "localhost" at port 9001. 
+    It listens for incoming connections and echoes messages unless "quit" 
+    is received, which terminates the connection.
+
+Functions:
+    handle_client(reader: StreamReader, writer: StreamWriter) -> None:
+        Handles the communication with a connected client asynchronously.
+    
+    main(address: str, port: int) -> None:
+        Sets up and starts the SSL server with the necessary certificates.
+"""
+import logging
+from asyncio import StreamReader, StreamWriter, run, start_server
+from pathlib import Path
+from ssl import Purpose, create_default_context
+
+
+async def handle_client(reader: StreamReader, writer: StreamWriter):
+    while True:
+        msg_bytes = await reader.read(10)
+        if msg_bytes == b"quit":
+            writer.write(b"quit")
+            await writer.drain()
+            break
+        writer.write(msg_bytes)
+        await writer.drain()
+
+
+async def main(address: str, port: int):
+    storage_path: Path = Path("server_keys")
+
+    keyfile = storage_path / "key.pem"
+    certfile = storage_path / "cert.pem"
+    context = create_default_context(Purpose.CLIENT_AUTH)
+    context.load_cert_chain(certfile, keyfile)
+
+    server = await start_server(handle_client, address, port, ssl=context)
+
+    service_socket = server.sockets[0].getsockname()
+    logging.info("Serving on %s", service_socket)
+
+    async with server:
+        await server.serve_forever()
+
+
+if __name__ == "__main__":
+    run(main("localhost", 9001))