MatrixSynapse/synapse/storage/schema/delta/51/e2e_room_keys.sql

/* Copyright 2017 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.
 */

-- users' optionally backed up encrypted e2e sessions
CREATE TABLE e2e_room_keys (
    user_id TEXT NOT NULL,
    room_id TEXT NOT NULL,
    session_id TEXT NOT NULL,
    version TEXT NOT NULL,
    first_message_index INT,
    forwarded_count INT,
    is_verified BOOLEAN,
    session_data TEXT NOT NULL
);

CREATE UNIQUE INDEX e2e_room_keys_idx ON e2e_room_keys(user_id, room_id, session_id);

-- the metadata for each generation of encrypted e2e session backups
CREATE TABLE e2e_room_keys_versions (
    user_id TEXT NOT NULL,
    version TEXT NOT NULL,
    algorithm TEXT NOT NULL,
    auth_data TEXT NOT NULL,
    deleted SMALLINT DEFAULT 0 NOT NULL
);

CREATE UNIQUE INDEX e2e_room_keys_versions_idx ON e2e_room_keys_versions(user_id, version);