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-rw-r--r--synapse/storage/end_to_end_keys.py15
-rw-r--r--synapse/storage/schema/delta/33/devices_for_e2e_keys.sql19
2 files changed, 34 insertions, 0 deletions
diff --git a/synapse/storage/end_to_end_keys.py b/synapse/storage/end_to_end_keys.py
index 2e89066515..62b7790e91 100644
--- a/synapse/storage/end_to_end_keys.py
+++ b/synapse/storage/end_to_end_keys.py
@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import twisted.internet.defer
+
 from ._base import SQLBaseStore
 
 
@@ -123,3 +125,16 @@ class EndToEndKeyStore(SQLBaseStore):
         return self.runInteraction(
             "claim_e2e_one_time_keys", _claim_e2e_one_time_keys
         )
+
+    @twisted.internet.defer.inlineCallbacks
+    def delete_e2e_keys_by_device(self, user_id, device_id):
+        yield self._simple_delete(
+            table="e2e_device_keys_json",
+            keyvalues={"user_id": user_id, "device_id": device_id},
+            desc="delete_e2e_device_keys_by_device"
+        )
+        yield self._simple_delete(
+            table="e2e_one_time_keys_json",
+            keyvalues={"user_id": user_id, "device_id": device_id},
+            desc="delete_e2e_one_time_keys_by_device"
+        )
diff --git a/synapse/storage/schema/delta/33/devices_for_e2e_keys.sql b/synapse/storage/schema/delta/33/devices_for_e2e_keys.sql
new file mode 100644
index 0000000000..140f2b63e0
--- /dev/null
+++ b/synapse/storage/schema/delta/33/devices_for_e2e_keys.sql
@@ -0,0 +1,19 @@
+/* Copyright 2016 OpenMarket 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.
+ */
+
+-- make sure that we have a device record for each set of E2E keys, so that the
+-- user can delete them if they like.
+INSERT INTO devices
+    SELECT user_id, device_id, 'unknown device' FROM e2e_device_keys_json;