/// <reference types="node" />
import * as ProteusKeys from '@wireapp/proteus/dist/keys/root';
import CryptoboxCRUDStore from './store/CryptoboxCRUDStore';
import CryptoboxSession from './CryptoboxSession';
import EventEmitter = require('events');
export interface SessionFromMessageTuple extends Array<CryptoboxSession | Uint8Array> {
    0: CryptoboxSession;
    1: Uint8Array;
}
declare class Cryptobox extends EventEmitter {
    static TOPIC: {
        NEW_PREKEYS: string;
        NEW_SESSION: string;
    };
    private cachedPreKeys;
    private cachedSessions;
    private logger;
    private minimumAmountOfPreKeys;
    private pk_store;
    private queue;
    private store;
    lastResortPreKey: ProteusKeys.PreKey | undefined;
    identity: ProteusKeys.IdentityKeyPair | undefined;
    VERSION: string;
    constructor(cryptoBoxStore: CryptoboxCRUDStore, minimumAmountOfPreKeys?: number);
    private save_session_in_cache(session);
    private load_session_from_cache(session_id);
    private remove_session_from_cache(session_id);
    create(): Promise<Array<ProteusKeys.PreKey>>;
    load(): Promise<Array<ProteusKeys.PreKey>>;
    private init();
    get_serialized_last_resort_prekey(): Promise<{
        id: number;
        key: string;
    }>;
    get_serialized_standard_prekeys(): Promise<Array<{
        id: number;
        key: string;
    }>>;
    private publish_event(topic, event);
    private publish_prekeys(newPreKeys);
    private publish_session_id(session);
    private refill_prekeys();
    private create_new_identity();
    session_from_prekey(session_id: string, pre_key_bundle: ArrayBuffer): Promise<CryptoboxSession>;
    private session_from_message(session_id, envelope);
    session_load(session_id: string): Promise<CryptoboxSession>;
    private session_cleanup(session);
    private session_save(session);
    private session_update(session);
    session_delete(session_id: string): Promise<string>;
    private create_last_resort_prekey();
    serialize_prekey(prekey: ProteusKeys.PreKey): {
        id: number;
        key: string;
    };
    private new_prekeys(start, size?);
    encrypt(session_id: string, payload: string | Uint8Array, pre_key_bundle: ArrayBuffer): Promise<ArrayBuffer>;
    decrypt(session_id: string, ciphertext: ArrayBuffer): Promise<Uint8Array>;
}
export default Cryptobox;