import { Certificate } from './helpers/certificate';
export declare function signXML(xmlToSign: string, options: Certificate): string;
export type CheckSignatureOptions = {
    algorithm: 'sha256' | 'sha512' | 'sha1';
    allowedCertificates: string[];
};
export declare function checkSignature(xmlToCheck: string, options: CheckSignatureOptions): void;
export declare function decryptXML(xmlToDecrypt: string, key: string): Promise<string>;