feat: add protobuf definitions

protos/conversations/group_v1.proto

@@ -0,0 +1,28 @@
+syntax = "proto3";
+
+package wap.convos.group_v1;
+
+import "base.proto";
+import "common_frames.proto";
+
+
+
+message ConversationInvite_GroupV1 {
+    repeated string participants = 1;
+}
+
+
+
+message GroupV1Frame {
+    // SDS like information: Message ID and channel_id extracted for utility
+    string message_id = 2;                   
+    string channel_id = 3;                      // Channel_id is associated with a set of participants
+                                                // This conflicts with conversation based encryption, 
+                                                // need to ensure the derived sender is a valid participant                                 
+    base.ReliabilityInfo reliability_info = 10;
+
+	oneof frame_type {
+		common_frames.ContentFrame content = 100;
+        // ...
+	}
+}

protos/encryption.proto

@@ -0,0 +1,26 @@
+syntax = "proto3";
+
+package wap.encryption;
+
+
+// TODO: This also encompasses plaintexts, is there a better name?
+// Alternatives: ???
+message EncryptedPayload {
+
+    oneof encryption {
+        encryption.Plaintext plaintext = 1;
+		encryption.Doubleratchet doubleratchet = 2;
+    }
+}
+
+message Plaintext {
+    bytes payload=1;
+}
+
+message Doubleratchet {
+    bytes dh = 1;       // 32 byte array
+    uint32 msgNum = 2;
+    uint32 prevChainLen = 3;
+    bytes ciphertext = 4;
+    string aux = 5;
+}

protos/envelope.proto

@@ -0,0 +1,16 @@
+syntax = "proto3";
+
+package wap.envelope;
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Payload Framing Messages
+///////////////////////////////////////////////////////////////////////////////
+
+message WapEnvelopeV1 {
+    
+    string conversation_hint = 1;
+    uint64 salt = 2;           
+    
+    bytes payload = 5;
+}

protos/inbox.proto

@@ -0,0 +1,17 @@
+syntax = "proto3";
+
+package wap.inbox;
+
+import "invite.proto";
+
+message Note{
+    string text = 1;
+}
+
+message InboxV1Frame {
+    string recipient = 1;
+    oneof frame_type {
+        invite.InvitePrivateV1 invite_private_v1 = 10;
+        Note note = 11;
+    }
+}

protos/invite.proto

@@ -0,0 +1,14 @@
+syntax = "proto3";
+
+package wap.invite;
+
+import "encryption.proto";
+
+message InvitePrivateV1 {
+    bytes initiator = 1;
+    bytes initiator_ephemeral = 2;
+    bytes participant = 3;
+    int32 participant_ephemeral_id= 4;
+    string discriminator = 5;
+    encryption.EncryptedPayload initial_message = 6;
+}

protos/private_v1.proto

@@ -0,0 +1,19 @@
+syntax = "proto3";
+
+package wap.convos.private_v1;
+
+
+message Placeholder {
+    uint32 counter = 1;
+}
+
+message PrivateV1Frame {                 
+    string conversation_id = 1;
+    bytes sender = 2;                
+    int64 timestamp = 3;          // Sender reported timestamp
+	oneof frame_type {
+		bytes content = 10;
+        Placeholder placeholder = 11;
+        // ....
+	}
+}

protos/reliability.proto

@@ -0,0 +1,23 @@
+syntax = "proto3";
+
+package wap.reliability;
+
+///////////////////////////////////////////////////////////////////////////////
+// SDS Payloads
+///////////////////////////////////////////////////////////////////////////////
+
+message HistoryEntry {
+    string message_id = 1;        // Unique identifier of the SDS message, as defined in `Message`
+    bytes retrieval_hint = 2;     // Optional information to help remote parties retrieve this SDS 
+                                  // message; For example, A Waku deterministic message hash or routing payload hash
+  }
+  
+  message ReliablePayload {
+      string message_id = 2;      
+      string channel_id = 3;  
+      int32 lamport_timestamp = 10;    
+      repeated HistoryEntry causal_history = 11;   
+      bytes bloom_filter = 12; 
+      // Optional field causes errors in nim protobuf generation. Removing for now as optional is implied anways.
+      bytes content = 20;                           
+  }