added basic cryptography, advertising, and forwarding functionality to the LoRa handler. Also added a UUID class for generating unique IDs for each device.

also, i have 2 radios now! :D

relay/connection.py

@@ -0,0 +1,16 @@
+from crypt_random import secure_random
+
+
+
+
+class Connection:
+    def load_public_constants(self):
+        with open("public_constants.txt", "r") as f:
+            self.P = int(f.readline(), 16)
+            self.G = int(f.readline(), 16)
+    
+    def __init__(self):
+        self.load_public_constants()
+        
+        self.private_key = int.from_bytes(secure_random(1024), "big")
+        self.public_key = pow(self.G, self.private_key) % self.P