type PasskeyCredential = {
    id: 'string';
    rawId: ArrayBuffer;
    response: {
        clientDataJSON: ArrayBuffer;
        attestationObject: ArrayBuffer;
        getPublicKey(): ArrayBuffer;
    };
    type: 'public-key';
};
type PasskeyCredentialWithPubkeyCoordinates = PasskeyCredential & {
    pubkeyCoordinates: {
        x: bigint;
        y: bigint;
    };
};
/**
 * Creates a passkey for signing.
 *
 * @returns A promise that resolves to a PasskeyCredentialWithPubkeyCoordinates object, which includes the passkey credential information and its public key coordinates.
 * @throws Throws an error if the passkey generation fails or if the credential received is null.
 */
declare function createPasskey(username: string): Promise<PasskeyCredentialWithPubkeyCoordinates>;
declare function getPassKey(challenge?: any): Promise<any>;
export type PasskeyLocalStorageFormat = {
    rawId: string;
    pubkeyCoordinates: {
        x: bigint;
        y: bigint;
    };
};
export type UsernameLocalStorageFormat = {
    username: string;
};
/**
 * Converts a PasskeyCredentialWithPubkeyCoordinates object to a format that can be stored in the local storage.
 * The rawId is required for signing and pubkey coordinates are for our convenience.
 * @param passkey - The passkey to be converted.
 * @returns The passkey in a format that can be stored in the local storage.
 */
declare function toLocalStorageFormat(passkey: PasskeyCredentialWithPubkeyCoordinates): PasskeyLocalStorageFormat;
declare function toLocalStorageFormatUsername(username: string): UsernameLocalStorageFormat;
/**
 * Checks if the provided value is in the format of a Local Storage Passkey.
 * @param x The value to check.
 * @returns A boolean indicating whether the value is in the format of a Local Storage Passkey.
 */
declare function isLocalStoragePasskey(x: unknown): x is PasskeyLocalStorageFormat;
/**
 * Extracts the signature into R and S values from the authenticator response.
 *
 * See:
 * - <https://datatracker.ietf.org/doc/html/rfc3279#section-2.2.3>
 * - <https://en.wikipedia.org/wiki/X.690#BER_encoding>
 */
declare function extractSignature(signature: ArrayBuffer | Uint8Array): [bigint, bigint];
/**
 * Compute the additional client data JSON fields. This is the fields other than `type` and
 * `challenge` (including `origin` and any other additional client data fields that may be
 * added by the authenticator).
 *
 * See <https://w3c.github.io/webauthn/#clientdatajson-serialization>
 */
declare function extractClientDataFields(response: AuthenticatorAssertionResponse): {
    field: any;
    clientDataJSON: string;
};
export { createPasskey, getPassKey, toLocalStorageFormat, toLocalStorageFormatUsername, isLocalStoragePasskey, extractSignature, extractClientDataFields, };