/// <reference types="node" />
import forge from "node-forge";
import { IAddImageInPdf, IGetCertData, ISignPdf } from "./types";
export declare function signPdf({ pdfBuffer, certBuffer, certPassword, signatureOptions, }: ISignPdf): Promise<Buffer>;
export declare function addImageInPdf({ pdfBuffer, signatureOptions, }: IAddImageInPdf): Promise<Buffer>;
export declare function getCertData({ certBuffer, certPassword }: IGetCertData): forge.pki.Certificate | null;