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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.keyFromAuthData = keyFromAuthData;
var _index = require("../crypto-api/index.js");
/*
* Copyright 2024 The Matrix.org Foundation C.I.C.
*
* 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
*
*
* 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.
*/
/* eslint-disable camelcase */
/**
* Derive a backup key from a passphrase using the salt and iterations from the auth data.
* @param authData - The auth data containing the salt and iterations
* @param passphrase - The passphrase to derive the key from
* @deprecated Deriving a backup key from a passphrase is not part of the matrix spec. Instead, a random key is generated and stored/shared via 4S.
*/
function keyFromAuthData(authData, passphrase) {
if (!authData.private_key_salt || !authData.private_key_iterations) {
throw new Error("Salt and/or iterations not found: " + "this backup cannot be restored with a passphrase");
}
return (0, _index.deriveRecoveryKeyFromPassphrase)(passphrase, authData.private_key_salt, authData.private_key_iterations, authData.private_key_bits);
}