Decorate events decrypted with untrusted sessions

Riot/Modules/Room/TimelineCells/Encryption/EventEncryptionDecoration.h

@@ -0,0 +1,30 @@
+// 
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef EventEncryptionDecoration_h
+#define EventEncryptionDecoration_h
+
+typedef NS_ENUM(NSUInteger, EventEncryptionDecoration)
+{
+    EventEncryptionDecorationNone,
+    EventEncryptionDecorationUnsafeKey,
+    EventEncryptionDecorationDecryptionError,
+    EventEncryptionDecorationNotEncrypted,
+    EventEncryptionDecorationUntrustedDevice
+};
+
+
+#endif /* EventEncryptionDecoration_h */