/// <reference types="node" />
import { Data } from './types';
import { VirgilPrivateKey } from './VirgilPrivateKey';
export declare class VirgilStreamSigner {
    private _isDisposed;
    private readonly signer;
    private readonly sha512;
    get isDisposed(): boolean;
    constructor();
    update(data: Data): this;
    sign(privateKey: VirgilPrivateKey, final?: boolean): Buffer;
    dispose(): void;
}