From 3f9fc10aed4a9281a97ea04e60ecc751c840411d Mon Sep 17 00:00:00 2001
From: chrysn <chrysn@fsfe.org>
Date: Thu, 1 Aug 2024 16:18:42 +0200
Subject: [PATCH] group oscore: Allow setting a gm_cred_fmt

---
 aiocoap/oscore.py          | 4 ++++
 tests/test_group_oscore.py | 1 +
 2 files changed, 5 insertions(+)

diff --git a/aiocoap/oscore.py b/aiocoap/oscore.py
index 004202f9..b8b41e46 100644
--- a/aiocoap/oscore.py
+++ b/aiocoap/oscore.py
@@ -1960,6 +1960,8 @@ class SimpleGroupContext(GroupContext, CanProtect, CanUnprotect, SecurityContext
     sender_auth_cred = None  # type: ignore
     group_manager_cred = None  # type: ignore
     cred_fmt = None
+    # This is currently not evaluated, but any GM interaction will need to have this information available.
+    group_manager_cred_fmt = None
 
     def __init__(
         self,
@@ -1977,6 +1979,7 @@ def __init__(
         peers,
         group_manager_cred,
         cred_fmt=COSE_KCCS,
+        group_manager_cred_fmt=COSE_KCCS,
     ):
         self.sender_id = sender_id
         self.id_context = group_id
@@ -1989,6 +1992,7 @@ def __init__(
         self.sender_auth_cred = sender_auth_cred
         self.group_manager_cred = group_manager_cred
         self.cred_fmt = cred_fmt
+        self.group_manager_cred_fmt = group_manager_cred_fmt
 
         self.peers = peers.keys()
         self.recipient_public_keys = {
diff --git a/tests/test_group_oscore.py b/tests/test_group_oscore.py
index 399a67e7..f80e8ed6 100644
--- a/tests/test_group_oscore.py
+++ b/tests/test_group_oscore.py
@@ -57,6 +57,7 @@ def setUp(self):
                     if i != j
                 },
                 gm_cred,
+                group_manager_cred_fmt="dummy",
             )
             for i, _ in enumerate(participants)
         ]