/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
import { IMessage, ISignService } from "../common/sign.mjs";
export declare class SignService implements ISignService {
    private readonly _token;
    readonly _serviceBrand: undefined;
    constructor(_token: Promise<string> | string | undefined);
    createNewMessage(value: string): Promise<IMessage>;
    validate(message: IMessage, value: string): Promise<boolean>;
    sign(value: string): Promise<string>;
}