/**
 * @license
 * Copyright 2023 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { PbHpkePrivateKey } from '../../../internal/proto';
import { HpkeKemPrivateKey } from './hpke_kem_private_key';
/** Helper class for creating HPKE KEM asymmetric keys. */
export declare class HpkeKemKeyFactory {
    private constructor();
    static createPrivate(privateKey: PbHpkePrivateKey): Promise<HpkeKemPrivateKey>;
}