(Java) Get Issuer Certificate Information

See more Certificates Examples

A certificate contains information about its issuer. This example demonstrates how to get the issuer information from a certificate.

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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 = cert.LoadFromFile("qa_data/certs/sample.cer");
    if (success == false) {
        System.out.println(cert.lastErrorText());
        return;
        }

    // Get issuer information:

    // -----------------------------------------------------------------------
    // (Not all subject fields may exist depending on the issuer certificate.)
    // -----------------------------------------------------------------------

    // Issuer DN (Distinguished Name, i.e. all the Issuer subject parts)
    System.out.println("DN: " + cert.issuerDN());

    // Common Subject parts:
    // Issuer Common Name
    System.out.println("CN: " + cert.issuerCN());

    // Issuer Country
    System.out.println("C: " + cert.issuerC());

    // Issuer Email address
    System.out.println("E: " + cert.issuerE());

    // Issuer Locality
    System.out.println("L: " + cert.issuerL());

    // Issuer Organization
    System.out.println("O: " + cert.issuerO());

    // Issuer Organizational Unit
    System.out.println("OU: " + cert.issuerOU());

    // Issuer State
    System.out.println("S: " + cert.issuerS());
  }
}