Add SphinxPacket protobufs

src/sphinx.proto3

@@ -0,0 +1,29 @@
+syntax = "proto3";
+
+message SphinxPacket {
+    Header Hdr = 1;
+    bytes Payload = 2;
+}
+
+message Header {
+    bytes Alpha = 1;
+    bytes Beta = 2;
+    bytes Gamma = 3;
+}
+
+message Hop {
+    bytes MultiAddress = 1;
+}
+
+message RoutingInfo {
+    Hop Addr = 1;
+    bytes Delay = 2;
+    bytes Gamma = 3;
+    bytes Beta = 4;
+}
+
+message HeaderInitials {
+    bytes Alpha = 1;
+    bytes Secret = 2;
+    bytes Blinder = 3;
+}

src/sphinx_pb.nim

@@ -0,0 +1,35 @@
+import protobuf_serialization/proto_parser
+import protobuf_serialization
+
+# Generate Nim types from the .proto file
+import_proto3 "sphinx.proto3"
+
+proc serialize*(packet: SphinxPacket): seq[byte] =
+  return Protobuf.encode(packet)
+
+proc deserialize*(encoded: seq[byte]): SphinxPacket =
+  return Protobuf.decode(encoded, SphinxPacket)
+
+proc serializeHeader*(header: Header): seq[byte] =
+  return Protobuf.encode(header)
+
+proc deserializeHeader*(encoded: seq[byte]): Header =
+  return Protobuf.decode(encoded, Header)
+
+proc serializeHop*(hop: Hop): seq[byte] =
+  return Protobuf.encode(hop)
+
+proc deserializeHop*(encoded: seq[byte]): Hop =
+  return Protobuf.decode(encoded, Hop)
+
+proc serializeRoutingInfo*(routingInfo: RoutingInfo): seq[byte] =
+  return Protobuf.encode(routingInfo)
+
+proc deserializeRoutingInfo*(encoded: seq[byte]): RoutingInfo =
+  return Protobuf.decode(encoded, RoutingInfo)
+
+proc serializeHeaderInitials*(headerInitials: HeaderInitials): seq[byte] =
+  return Protobuf.encode(headerInitials)
+
+proc deserializeHeaderInitials*(encoded: seq[byte]): HeaderInitials =
+  return Protobuf.decode(encoded, HeaderInitials)