React Native

Convert CRL PEM to XML

See more PEM Examples

Loads a CRL (Certificate Revocation List) from the PEM file format and converts to XML to allow for visual examination and parsing.

Note: This example requires Chilkat v9.5.0.77 or greater.

React Native

import { Asn, Pem, Xml } from '@chilkat/react-native'

function chilkatExample() {
  // This example requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  // This example requires Chilkat v9.5.0.77 or greater.
  const pem = new Pem();

  pem.verboseLogging = true;
  try {
    pem.loadPemFile('qa_data/crl/sampleCrl.pem', 'password_not_used');
  } catch {
    console.log(pem.lastErrorText);
    return;
  }

  const numCrls = pem.numCrls;
  let i = 0;

  const asn = new Asn();
  const xml = new Xml();
  while (i < numCrls) {

    // Get the CRL as base64 (multi-line)
    let crlBase64: string;
    try {
      crlBase64 = pem.getEncodedItem('crl', '', 'base64_mime', i);
    } catch {
      console.log(pem.lastErrorText);
      return;
    }

    console.log(crlBase64);

    try {
      asn.loadEncoded(crlBase64, 'base64');
    } catch {
      console.log(asn.lastErrorText);
      return;
    }

    // Convert ASN.1 to XML and load into xml and re-emit for pretty printing..
    xml.loadXml(asn.asnToXml());
    console.log(xml.getXml());

    // Use this online tool to generate parsing code from CRL XML: 
    // Generate Parsing Code from XML

    console.log('-------------------------------------');
    i++;
  }
}