import { PublicKeyCredentialCreationOptionsJSON, PublicKeyCredentialRequestOptionsJSON, RegistrationResponseJSON, AuthenticationResponseJSON } from "@simplewebauthn/types";
import { startRegistration as startWebAuthnRegistration, startAuthentication as startWebAuthnAuthentication } from '@simplewebauthn/browser';
/**
 * Interface for WebAuthn PRF extension input
 */
export interface PrfExtensionInput {
    eval: {
        first: Uint8Array;
    };
}
declare module '@simplewebauthn/types' {
    interface AuthenticationExtensionsClientInputs {
        prf?: PrfExtensionInput;
    }
    interface ClientExtensionResults {
        prf?: {
            results?: {
                first?: Uint8Array;
            };
        };
    }
    interface AuthenticationExtensionsClientOutputs {
        prf?: {
            results?: {
                first?: Uint8Array;
            };
        };
    }
}
/**
 * Dynamically load browser dependencies
 */
export declare function loadBrowserDependencies(): Promise<{
    startRegistration: typeof startWebAuthnRegistration;
    startAuthentication: typeof startWebAuthnAuthentication;
}>;
/**
 * Check if the WebAuthn PRF extension is supported by the browser
 * @returns Promise resolving to a boolean indicating if PRF is supported
 */
export declare function isPrfExtensionSupported(): Promise<boolean>;
/**
 * Generate WebAuthn registration options with PRF extension
 * @param baseOptions - Base registration options from the server
 * @param salt - Salt for PRF extension (optional, will generate if not provided)
 * @returns Modified options with PRF extension
 */
export declare function addPrfExtensionToRegistrationOptions(baseOptions: PublicKeyCredentialCreationOptionsJSON, salt?: Uint8Array): PublicKeyCredentialCreationOptionsJSON;
/**
 * Generate WebAuthn authentication options with PRF extension
 * @param baseOptions - Base authentication options from the server
 * @param salt - Salt for PRF extension (must be the same as used during registration)
 * @returns Modified options with PRF extension
 */
export declare function addPrfExtensionToAuthenticationOptions(baseOptions: PublicKeyCredentialRequestOptionsJSON, salt: Uint8Array): PublicKeyCredentialRequestOptionsJSON;
/**
 * Derive a master key using the WebAuthn PRF extension
 * @param response - WebAuthn response from registration or authentication
 * @returns Promise resolving to a CryptoKey that can be used for key derivation
 * @throws {Error} If PRF extension is not supported or response is invalid
 */
export declare function deriveMasterKeyFromPrf(response: RegistrationResponseJSON | AuthenticationResponseJSON): Promise<CryptoKey>;