/**
 * @license
 * Copyright 2020 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { PublicKeyVerify } from '../signature/internal/public_key_verify';
import * as EllipticCurves from './elliptic_curves';
/**
 * Implementation of ECDSA verifying.
 *
 * @final
 */
export declare class EcdsaVerify extends PublicKeyVerify {
    private readonly key;
    private readonly hash;
    private readonly encoding;
    private readonly ieeeSignatureLength;
    /**
     * @param encoding The
     *     encoding of the signature.
     */
    constructor(key: CryptoKey, hash: string, encoding: EllipticCurves.EcdsaSignatureEncodingType);
    /**
     */
    verify(signature: Uint8Array, message: Uint8Array): Promise<boolean>;
}
/**
 * @param opt_encoding The
 *     optional encoding of the signature. If absent, default is IEEE P1363.
 */
export declare function fromJsonWebKey(jwk: JsonWebKey, hash: string, encoding?: EllipticCurves.EcdsaSignatureEncodingType): Promise<PublicKeyVerify>;