declare global {
    interface Window {
        crypto?: {
            getRandomValues: (array: Uint8Array) => Uint8Array;
        };
        chrome?: any;
        browser?: any;
    }
}
export type Algorithm = 'sha1' | 'sha256' | 'sha512';
export interface TOTPOptions {
    timeStep?: number;
    digits?: number;
    algorithm?: Algorithm;
    window?: number;
    epoch?: number;
    maxAttempts?: number;
    lockoutDuration?: number;
}
export interface TOTPResult {
    token: string;
    timeRemaining: number;
    expiresAt: number;
    period: number;
}
export interface VerifyResult {
    isValid: boolean;
    delta?: number;
    timeUsed?: number;
    timeDelta?: number;
    attemptsRemaining?: number;
    lockedUntil?: number;
}
export interface SecurityConfig {
    minSecretLength: number;
    maxSecretLength: number;
    maxWindow: number;
    maxDigits: number;
    maxTimeStep: number;
    minTimeStep: number;
}
declare const SECURITY_CONFIG: SecurityConfig;
declare const DEFAULT_OPTIONS: Required<TOTPOptions>;
export declare function generateTOTP(secret: string, time?: number, options?: TOTPOptions): string;
export declare function generateTOTPAdvanced(secret: string, time?: number, options?: TOTPOptions): TOTPResult;
export declare function verifyTOTP(secret: string, token: string, time?: number, options?: TOTPOptions, identifier?: string): boolean;
export declare function verifyTOTPAdvanced(secret: string, token: string, time?: number, options?: TOTPOptions, identifier?: string): VerifyResult;
export declare function generateTOTPURI(secret: string, accountName: string, issuer: string, options?: TOTPOptions): string;
export declare function parseTOTPURI(uri: string): {
    secret: string;
    accountName: string;
    issuer: string;
    options: TOTPOptions;
} | null;
export declare function getRemainingTime(options?: TOTPOptions): number;
export declare function getProgress(options?: TOTPOptions): number;
export declare function clearAttempts(identifier: string): void;
export declare function getAttemptsInfo(identifier: string): {
    attempts: number;
    lastAttempt: number;
    lockedUntil: number | undefined;
} | null;
export declare function validateSecretStrength(secret: string): {
    isValid: boolean;
    score: number;
    issues: string[];
};
export declare function sanitizeSecret(secret: string): string;
export { DEFAULT_OPTIONS, SECURITY_CONFIG };
export { getEnvironmentInfo } from './crypto/crypto';
export { generateSecret, generateSecureSecret } from './secret';
export { decodeBase32, encodeBase32 } from './utils/base32';
export * from './hotp';
export * from './security';
export * from './config';
export * from './hooks';
export * from './logger';
export * from './errors';
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