/// <reference types="node" />
import { EcKey } from '../../jwk/algorithms/ec/ec.key';
import { SupportedEllipticCurve } from '../../jwk/algorithms/ec/types/supported-elliptic-curve';
import { JsonWebSignatureAlgorithm } from './jsonwebsignature.algorithm';
import { SupportedJsonWebSignatureAlgorithm } from './types/supported-jsonwebsignature-algorithm';
/**
 * Implementation of the JSON Web Signature ECDSA Algorithm.
 */
declare class EcdsaAlgorithm extends JsonWebSignatureAlgorithm {
    /**
     * Elliptic Curve used by the JSON Web Signature ECDSA Algorithm.
     */
    protected readonly curve: SupportedEllipticCurve;
    /**
     * Instantiates a new JSON Web Signature ECDSA Algorithm to Sign and Verify the Messages.
     *
     * @param hash Hash Algorithm used to Sign and Verify the Messages.
     * @param algorithm Name of the JSON Web Signature Algorithm.
     * @param curve Elliptic Curve used by the JSON Web Signature ECDSA Algorithm.
     */
    constructor(hash: string, algorithm: SupportedJsonWebSignatureAlgorithm, curve: SupportedEllipticCurve);
    /**
     * Signs a Message with the provided JSON Web Key.
     *
     * @param message Message to be Signed.
     * @param key JSON Web Key used to Sign the provided Message.
     * @returns Resulting Signature of the provided Message.
     */
    sign(message: Buffer, key: EcKey): Promise<Buffer>;
    /**
     * Checks if the provided Signature matches the provided Message based on the provide JSON Web Key.
     *
     * @param signature Signature to be matched against the provided Message.
     * @param message Message to be matched against the provided Signature.
     * @param key JSON Web Key used to verify the Signature and Message.
     */
    verify(signature: Buffer, message: Buffer, key: EcKey): Promise<void>;
    /**
     * Checks if the provided JSON Web Key can be used by the JSON Web Signature ECDSA Algorithm.
     *
     * @param key JSON Web Key to be checked.
     * @throws {InvalidJsonWebKeyException} The provided JSON Web Key is invalid.
     */
    protected validateJsonWebKey(key: EcKey): void;
}
/**
 * ECDSA using P-256 and SHA-256.
 */
export declare const ES256: EcdsaAlgorithm;
/**
 * ECDSA using P-384 and SHA-384.
 */
export declare const ES384: EcdsaAlgorithm;
/**
 * ECDSA using P-521 and SHA-512.
 */
export declare const ES512: EcdsaAlgorithm;
export {};