/**
 * @license
 * Copyright 2020 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import * as KeyManager from '../internal/key_manager';
import { PbKeyData, PbMessage } from '../internal/proto';
import * as Util from '../internal/util';
import { HybridEncrypt } from './internal/hybrid_encrypt';
/**
 * @final
 */
declare class EciesAeadHkdfPublicKeyFactory implements KeyManager.KeyFactory {
    newKey(keyFormat: PbMessage | Uint8Array): never;
    newKeyData(serializedKeyFormat: Uint8Array): never;
}
/**
 * @final
 */
export declare class EciesAeadHkdfPublicKeyManager implements KeyManager.KeyManager<HybridEncrypt> {
    static KEY_TYPE: string;
    private static readonly SUPPORTED_PRIMITIVE;
    static VERSION: number;
    keyFactory: EciesAeadHkdfPublicKeyFactory;
    getPrimitive(primitiveType: Util.Constructor<HybridEncrypt>, key: PbKeyData | PbMessage): Promise<HybridEncrypt>;
    doesSupport(keyType: string): boolean;
    getKeyType(): string;
    getPrimitiveType(): typeof HybridEncrypt;
    getVersion(): number;
    getKeyFactory(): EciesAeadHkdfPublicKeyFactory;
    private static getKeyProto;
    private static getKeyProtoFromKeyData;
}
export {};