/**
 * @license
 * Copyright 2020 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { PbEcdsaKeyFormat, PbEcdsaParams, PbEcdsaPrivateKey, PbEcdsaPublicKey, PbEcdsaSignatureEncoding as PbEcdsaSignatureEncodingType } from '../internal/proto';
import * as EllipticCurves from '../subtle/elliptic_curves';
export declare function validateKeyFormat(keyFormat: PbEcdsaKeyFormat): void;
export declare function validatePrivateKey(key: PbEcdsaPrivateKey, privateKeyManagerVersion: number, publicKeyManagerVersion: number): void;
export declare function validatePublicKey(key: PbEcdsaPublicKey, publicKeyManagerVersion: number): void;
export declare function validateParams(params: PbEcdsaParams): void;
export declare function encodingTypeProtoToEnum(encodingTypeProto: PbEcdsaSignatureEncodingType): EllipticCurves.EcdsaSignatureEncodingType;
/**
 * WARNING: This method assumes that the given key proto is valid.
 *
 */
export declare function getJsonWebKeyFromProto(key: PbEcdsaPrivateKey | PbEcdsaPublicKey): JsonWebKey;