/// <reference types="node" />
import BN from "bn.js";
import { Point } from "../..";
import BN256Scalar from "../../pairing/scalar";
import Mask from "../mask";
export declare type BdnSignature = Buffer;
/**
 * Generate the list of coefficients for the list of public keys
 *
 * @param pubkeys The list of public keys
 * @return The list of coefficients as BigNumber
 */
export declare function hashPointToR(pubkeys: Point[]): BN[];
/**
 * Aggregate the public keys of the mask
 *
 * @param mask The mask with the participation and the list of points
 * @return The new point representing the aggregation
 */
export declare function aggregatePublicKeys(mask: Mask): Point;
/**
 * Aggregate a list of signatures according to the given mask
 *
 * @param mask The mask with the participation
 * @param sigs The signatures as bytes
 * @return The new point representing the aggregation
 */
export declare function aggregateSignatures(mask: Mask, sigs: Buffer[]): Point;
/**
 * Sign the message using the given secret
 *
 * @param msg       The Message to sign
 * @param secret    The secret key
 * @return The BDN signature
 */
export declare function sign(msg: Buffer, secret: BN256Scalar): BdnSignature;
/**
 * Verify the given signature against the message using the mask
 * to aggregate the public keys
 *
 * @param msg   The message
 * @param mask  The mask with the public keys
 * @param sig   The signature as bytes
 * @return true if the signature matches, false otherwise
 */
export declare function verify(msg: Buffer, mask: Mask, sig: Buffer): boolean;