declare function generateKeyPair(): Promise<CryptoKeyPair>;
declare function storePrivateKey(key: CryptoKey): Promise<void>;
declare function exportPublicKey(key: CryptoKey): Promise<string>;
/**
 * Initializes the browser detection by generating a key pair (if not already generated)
 * and registering the public key with the backend.
 *
 * @returns {Promise<void>} A promise that resolves when the browser detection setup is completed.
 */
declare function setupBrowserDetection(): Promise<void>;
declare function fetchChallenge(): Promise<string>;
declare function signChallenge(challenge: string): Promise<string>;
/**
 * Checks if the current browser request is valid by performing a challenge-response
 * verification.
 *
 * @returns {Promise<boolean>} A promise that resolves to `true` if the browser request is valid, `false` otherwise.
 */
declare function isBrowserRequestValid(): Promise<boolean>;
/**
 * Retrieves the keys from the backend for validation purposes.
 *
 * @returns {Promise<{token:string, challenge: string, signature: string}>} A promise that resolves to an object containing the token, challenge and signature.
 */
declare function retrieveKeysForValidation(): Promise<{
    token: string;
    challenge: string;
    signature: string;
}>;
/**
 * Validates the browser by using the provided challenge and signature.
 *
 * @param {string} token - The token used for authentication.
 * @param {string} challenge - The challenge retrieved from the backend.
 * @param {string} signature - The signature of the challenge using the private key.
 * @returns {Promise<boolean>} A promise that resolves to `true` if the browser is valid, `false` otherwise.
 */
declare function validateBrowser(token: string, challenge: string, signature: string): Promise<boolean>;

export { exportPublicKey, fetchChallenge, generateKeyPair, isBrowserRequestValid, retrieveKeysForValidation, setupBrowserDetection, signChallenge, storePrivateKey, validateBrowser };