/// <reference types="node" />
import { GenerateTotpUriParameters } from './generateUri';
export interface BuiltTotpParameters {
    secret: Buffer;
    interval?: number;
    digits?: number;
    hmacAlgorithm?: 'sha1' | 'sha256' | 'sha512';
}
export declare const buildTotp: ({ secret, interval, digits, hmacAlgorithm }: BuiltTotpParameters) => {
    generate: (time?: number) => string;
    verify: (input: string, time?: number) => boolean;
    uri: ({ label, issuer }: Pick<GenerateTotpUriParameters, "issuer" | "label">) => string;
};