/**
 *
 * 2key-ratchet
 * Copyright (c) 2016 Peculiar Ventures, Inc
 * Based on https://whispersystems.org/docs/specifications/doubleratchet/ and
 * https://whispersystems.org/docs/specifications/x3dh/ by Open Whisper Systems
 *
 */
import { IECKeyPair } from "../crypto";
import { IJsonSerializable } from "../type";
export interface IJsonIdentity {
    id: number;
    signingKey: CryptoKeyPair;
    exchangeKey: CryptoKeyPair;
    preKeys: CryptoKeyPair[];
    signedPreKeys: CryptoKeyPair[];
    createdAt: string;
}
export declare class Identity implements IJsonSerializable {
    static fromJSON(obj: IJsonIdentity): Promise<Identity>;
    static create(id: number, signedPreKeyAmount?: number, preKeyAmount?: number, extractable?: boolean): Promise<Identity>;
    id: number;
    signingKey: IECKeyPair;
    exchangeKey: IECKeyPair;
    createdAt: Date;
    preKeys: IECKeyPair[];
    signedPreKeys: IECKeyPair[];
    protected constructor(id: number, signingKey: IECKeyPair, exchangeKey: IECKeyPair);
    toJSON(): Promise<IJsonIdentity>;
    fromJSON(obj: IJsonIdentity): Promise<void>;
}