fix: INTERCOM messages RSA

these were still using the removed pgpy

hivemind_core/protocol.py

@@ -5,13 +5,13 @@
 from enum import Enum, IntEnum
 from typing import Union, List, Optional, Callable
 
-import pgpy
 from ovos_bus_client import MessageBusClient
 from ovos_bus_client.message import Message
 from ovos_bus_client.session import Session
 from ovos_utils.fakebus import FakeBus
 from ovos_utils.log import LOG
 from poorman_handshake import HandShake, PasswordHandShake
+from poorman_handshake.asymmetric.utils import verify_RSA, decrypt_RSA, encrypt_RSA, load_RSA_key
 
 from hivemind_bus_client.identity import NodeIdentity
 from hivemind_bus_client.message import HiveMessage, HiveMessageType, HiveMindBinaryPayloadType
@@ -671,12 +671,17 @@ def handle_intercom_message(
         pload = message.payload
         if isinstance(pload, dict) and "ciphertext" in pload:
             try:
-                message_from_blob = pgpy.PGPMessage.from_blob(pload["ciphertext"])
+                from binascii import unhexlify
+                ciphertext = unhexlify(pload["ciphertext"])
+                signature = unhexlify(pload["signature"])
 
-                with open(self.identity.private_key, "r") as f:
-                    private_key = pgpy.PGPKey.from_blob(f.read())
+                # TODO - allow verifying, we need to store trusted pubkeys before this can be done
+                #pub = ""
+                #verified = verify_RSA(pub, ciphertext, signature)
 
-                decrypted: str = private_key.decrypt(message_from_blob)
+                private_key = load_RSA_key(self.identity.private_key)
+
+                decrypted: str = decrypt_RSA(private_key, ciphertext).decode("utf-8")
                 message._payload = HiveMessage.deserialize(decrypted)
             except:
                 if k: