1 files changed, 8 insertions, 0 deletions
diff --git a/synapse/api/constants.py b/synapse/api/constants.py
index 8363c2bb0f..8c7ad2a407 100644
--- a/synapse/api/constants.py
+++ b/synapse/api/constants.py
@@ -127,6 +127,14 @@ class ToDeviceEventTypes:
     RoomKeyRequest = "m.room_key_request"
 
 
+class DeviceKeyAlgorithms:
+    """Spec'd algorithms for the generation of per-device keys"""
+
+    ED25519 = "ed25519"
+    CURVE25519 = "curve25519"
+    SIGNED_CURVE25519 = "signed_curve25519"
+
+
 class EduTypes:
     Presence = "m.presence"