diff --git a/protos/encryption.proto b/protos/encryption.proto
index a245369..b7eb6f7 100644
--- a/protos/encryption.proto
+++ b/protos/encryption.proto
@@ -10,6 +10,7 @@ message EncryptedPayload {
     oneof encryption {
         encryption.Plaintext plaintext = 1;
 		encryption.Doubleratchet doubleratchet = 2;
+        encryption.XK0 xk0 = 3;
     }
 }
 
@@ -24,3 +25,11 @@ message Doubleratchet {
     bytes ciphertext = 4;
     string aux = 5;
 }
+
+message XK0 {
+    bytes initiator_static = 1;    
+    bytes initiator_ephemeral = 2;  
+    bytes responder_static = 3;    
+    bytes responder_ephemeral = 4; 
+    bytes payload = 5;
+}
diff --git a/protos/invite.proto b/protos/invite.proto
index 608f8d4..2121a9d 100644
--- a/protos/invite.proto
+++ b/protos/invite.proto
@@ -5,10 +5,6 @@ package logoschat.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;
 }