Load Base64-encoded X.509 Certificate (.cer)

Loads a digital certificate from a base64 encoded DER X.509 Certificate (.cer, .crt) and fetches information about the cert.

 Chilkat Java Library Downloads for Windows, Linux, and MAC OS X

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    CkCert cert = new CkCert();

    boolean success;

    //  LoadFromFile will load virtually any certificate format file.
    //  It will auto-recognize the format and load appropiately.
    //  A base64-encoded DER X.509 certificate file
    //  contains the binary DER in base64 encoded form.
    //  Therefore, it is a text file that will begin like this:
    //  -----BEGIN CERTIFICATE-----
    //  MIIFbjCCBFagAwIBAgIGdDPNv/L0MA0GCSqGSIb3DQEBBQUAMIHKMQswCQYDVQQG
    //  EwJVUzEQMA4GA1UECBMHQXJpem9uYTETMBEGA1UEBxMKU2NvdHRzZGFsZTEaMBgG
    //  ...

    success = cert.LoadFromFile("/Users/chilkat/testData/cer/chilkat_base64.cer");
    if (success != true) {
        System.out.println(cert.lastErrorText());
        return;
    }

    //  DN = "Distinguished Name"
    System.out.println("SubjectDN:" + cert.subjectDN());

    System.out.println("Common Name:" + cert.subjectCN());
    System.out.println("Issuer Common Name:"
         + cert.issuerCN());

    System.out.println("Serial Number:" + cert.serialNumber());


  }
}