import { IData, IGroup } from './db';
export interface ISigned {
    signature?: string;
    signer?: string;
}
export interface IDevice {
    id: string;
    userId: string;
    app: string;
    name?: string;
    expires?: number;
    pushSubscription?: {
        endpoint: string;
        expirationTime: number;
        keys: any;
    };
    subscriptionExpires?: number;
}
export interface IUser extends ISigned, IData {
    type: 'User';
    group: 'users';
    name: string;
    publicKey: string;
    publicBoxKey: string;
    devices?: {
        [deviceId: string]: IDevice;
    };
}
export declare function isUser(data: IData): data is IUser;
export declare function newUser(name?: string): IUser & {
    secretKey: string;
};
export declare let publicBoxKey: string;
export declare let userId: string;
export declare function init(config?: {
    id: string;
    secretKey: string;
    name?: string;
    iconUrl?: string;
    dontWarn?: boolean;
    dontStore?: boolean;
}): Promise<string>;
export declare function hydrateUser(id: string, secretKey: string, displayName?: string): IUser;
export declare function signMessageWithSecretKey(msg: string, secretKey: string): string;
export interface IDataBox {
    fromUserId: string;
    contents: string;
    nonce: string;
}
export declare function boxDataWithKeys(data: any, toPublicBoxKey: string, fromSecretKey: string, fromUserId: string): IDataBox;
export declare function getSignature(msg: string, secretKey: string): string;
export declare function signObjectWithIdAndSecretKey<T>(obj: T, userId: string, secretKey: string): T & ISigned;
export declare function signMessage(msg: string): string;
export declare function signObject<T>(obj: T): T & ISigned;
export declare function boxDataForPublicKey(data: any, toPublicBoxKey: string): IDataBox;
export declare function boxDataForUser(data: any, toUserId: string): Promise<IDataBox>;
export declare function openMessage(signedMsg: string, publicKey: string): string;
export declare function openBoxWithSecretKey(box: IDataBox, fromPublicBoxKey: string, toSecretKey: string): any;
export declare function openBox(box: IDataBox): Promise<any>;
export declare function verifySignature(message: string, signature: string, publicKey: string): boolean;
export declare function verifySignedObject(obj: ISigned, publicKey: string): void;
export declare function verifySigner(obj: ISigned & {
    id?: string;
}): Promise<void>;
export declare function keysEqual(publicKey1: string, publicKey2: string): boolean;
export declare function newData<T>(fields?: Partial<IData> & T): IData & T;
export declare function newGroup(fields?: Partial<IGroup>): IGroup;
export declare function generateRandomSecureString(): string;