React Native Requires Chilkat v11.0.0+

Get Certificates from .p12 / .pfx

See more PFX/P12 Examples

A PKCS12 (.p12 / .pfx) is a container for holding a certificate, its private key, and the certs in the chain of authentication up to and possibly including the root CA cert. A .p12 is not required to contain certain things. It will contain whatever the creator of the .p12 decided to include. It's possible to contain just a private key, just a cert, many certs without private keys, or many certs with many private keys. Usually, a .p12 contains one certificate, its associated private key, and certificates in the chain of authentication. React Native

import { Cert, Pfx } from '@chilkat/react-native'

function chilkatExample() {
  const pfx = new Pfx();

  try {
    pfx.loadPfxFile('qa_data/pfx/test.pfx', 'pfx_password');
  } catch {
    console.log(pfx.lastErrorText);
    return;
  }

  // Iterate over the certs contained in the PFX
  const cert = new Cert();
  const numCerts = pfx.numCerts;
  let i = 0;
  while (i < numCerts) {

    pfx.certAt(i, cert);

    console.log(`--- ${i} ---`);
    console.log(cert.subjectDN);
    // Is this a root cert, or self-signed?
    console.log(`Root: ${cert.isRoot}`);
    console.log(`Self-Signed: ${cert.selfSigned}`);

    // If this certificate is not the root (self-signed), then get the issuer.
    // If the issuing certificate is contained in the PFX, then it will be found here..
    if (!cert.selfSigned) {
      try {
        const issuer = cert.findIssuer();
        console.log(`Issuer: ${issuer.subjectDN}`);
      } catch {
        console.log('Issuer not found.');
      }
    }

    i++;
  }

  // Usually, the user certificate is at index 0, its issuer is at index 1, etc. until we get to the root certificate.
}