import speakeasy from 'speakeasy';
export declare function generate2FAKey(options?: speakeasy.GenerateSecretOptions): speakeasy.GeneratedSecret;
export declare function generateQrCode(options?: speakeasy.GenerateSecretOptions): Promise<QrCodeResponse>;
export declare function verifyToken(secret: string, token: string): boolean;
export interface QrCodeResponse {
    secret: string;
    imageData: string;
    url: string;
}