declare const otpDigitLength: readonly [6, 8, 10];
type OtpType = "hotp" | "totp";
type OtpHashAlgorithm = "sha1" | "sha256" | "sha512";
type OtpDigitLength = (typeof otpDigitLength)[number];
interface OtpUriOptions {
	algorithm: OtpHashAlgorithm;
	digits: OtpDigitLength;
	counter: number;
	period: number;
}
interface HotpUriOptions extends Partial<Omit<OtpUriOptions, "period">> {}
interface TotpUriOptions extends Partial<Omit<OtpUriOptions, "counter">> {}
declare function generateOtpUri(type: "hotp", issuer: string, subject: string, secret: string, options?: HotpUriOptions): string;
declare function generateOtpUri(type: "totp", issuer: string, subject: string, secret: string, options?: TotpUriOptions): string;
declare function generateOtpUri(type: OtpType, issuer: string, subject: string, secret: string, options?: HotpUriOptions | TotpUriOptions): string;
declare function generateHotpUri(issuer: string, subject: string, secret: string, options?: HotpUriOptions): string;
declare function generateTotpUri(issuer: string, subject: string, secret: string, options?: TotpUriOptions): string;
export { generateTotpUri, generateOtpUri, generateHotpUri };