import * as pkijs from 'pkijs';
import { Certificate } from '@citrineos/data';
import jsrsasign from 'jsrsasign';
import KJUR = jsrsasign.KJUR;
import OCSPRequest = jsrsasign.KJUR.asn1.ocsp.OCSPRequest;
import Request = jsrsasign.KJUR.asn1.ocsp.Request;
import { CertificationRequest } from 'pkijs';
import moment from 'moment';
import { ILogObj, Logger } from 'tslog';
export declare const dateTimeFormat = "YYMMDDHHmmssZ";
export declare function getValidityTimeString(time: moment.Moment): string;
export declare function createPemBlock(type: string, content: string): string;
export declare function parseCertificateChainPem(pem: string): string[];
/**
 * Decode the pem and extract certificates
 * @param pem - base64 encoded certificate chain string without header and footer
 * @return array of pkijs.CertificateSetItem
 */
export declare function extractCertificateArrayFromEncodedString(pem: string): pkijs.CertificateSetItem[];
/**
 * extracts the base64-encoded content from a pem encoded csr
 * @param csrPem
 * @private
 * @return {string} The parsed CSR or the original CSR if it cannot be parsed
 */
export declare function extractEncodedContentFromCSR(csrPem: string): string;
/**
 * Generate certificate and its private key
 *
 * @param certificateEntity - the certificate
 * @param logger - the logger
 * @param issuerKeyPem - the issuer private key
 * @param issuerCertPem - the issuer certificate
 *
 * @return generated certificate pem and its private key pem
 */
export declare function generateCertificate(certificateEntity: Certificate, logger: Logger<ILogObj>, issuerKeyPem?: string, issuerCertPem?: string): [string, string];
/**
 * Create a signed certificate for the provided CSR using the issuer certificate, and its private key.
 *
 * @param csrPem - The CSR that need to be signed.
 * @param issuerCertPem - The issuer certificate.
 * @param issuerPrivateKeyPem - The issuer private key.
 * @return {KJUR.asn1.x509.Certificate} The signed certificate.
 */
export declare function createSignedCertificateFromCSR(csrPem: string, issuerCertPem: string, issuerPrivateKeyPem: string): KJUR.asn1.x509.Certificate;
export declare function sendOCSPRequest(ocspRequest: OCSPRequest | Request, responderURL: string): Promise<string>;
export declare function parseCSRForVerification(csrPem: string): CertificationRequest;
export declare function generateCSR(certificate: Certificate): [string, string];