import { RequestOptions } from '../Chat.js';
import { ServiceId } from '../../Address.js';
import { PublicKey } from '../../EcKeys.js';
import { PreKeyBundle } from '../../ProtocolTypes.js';
import GroupSendFullToken from '../../zkgroup/groupsend/GroupSendFullToken.js';
declare module '../Chat' {
    interface UnauthenticatedChatConnection extends UnauthKeysService {
    }
}
export interface UnauthKeysService {
    /**
     * Fetch the prekeys for a given target user
     *
     * @throws {RequestUnauthorizedError} if `auth` is not valid for the target
     * @throws {ServiceIdNotFound} if the requested identity or device does
     * not exist or device has no available prekeys.
     */
    getPreKeys: (request: {
        target: ServiceId;
        device: 'all' | {
            deviceId: number;
        };
        auth: {
            accessKey: Uint8Array<ArrayBuffer>;
        } | GroupSendFullToken | 'unrestricted';
    }, options?: RequestOptions) => Promise<{
        identityKey: PublicKey;
        preKeyBundles: PreKeyBundle[];
    }>;
}