/*! Copyright 2026 the gnablib contributors MPL-1.1 */
import { ParseProblem } from '../../error/probs/ParseProblem.js';
import { U64, U64Mut } from '../../primitive/number/U64.js';
import { IHash } from '../interfaces/IHash.js';
declare class Otp {
    private readonly _a8;
    protected readonly _c: U64Mut;
    readonly digits: number;
    private readonly _mod;
    private readonly _hashAlgo;
    private _h;
    protected constructor(key: Uint8Array, digits: number, algo: IHash);
    get counter(): U64;
    protected _truncate(hashResult: Uint8Array): number;
    generate(_nop?: boolean): number;
    validate(tok: number, backWindow?: number, forwardWindow?: number): boolean;
    protected _uriBase(iss: string, user: string, key: string | Uint8Array): string;
    protected static _parseUri(uri: string, type: string): [string, string, Uint8Array, IHash | undefined, number, number, number] | ParseProblem;
    static randomKey(size?: number): Uint8Array;
}
export declare class Hotp extends Otp {
    createUri(iss: string, user: string, key: string | Uint8Array): string;
    consume(): void;
    static newWithKey(key: Uint8Array, digits?: number, algo?: IHash, counter?: U64): Hotp;
    static parseUri(uri: string): [Hotp, string, string] | ParseProblem;
}
export declare class Totp extends Otp {
    private readonly _x;
    protected constructor(key: Uint8Array, timeStep: number, digits: number, algo: IHash);
    get timeStep(): number;
    private _setNow;
    setUtime(utime: U64): void;
    generate(liveTime?: boolean): number;
    validate(tok: number, backWindow?: number, forwardWindow?: number, liveTime?: boolean): boolean;
    createUri(iss: string, user: string, key: string | Uint8Array): string;
    static newWithKey(key: Uint8Array, timeStep?: number, digits?: number, algo?: IHash): Totp;
    static parseUri(uri: string): [Totp, string, string] | ParseProblem;
}
export {};