(Java) Apple Keychain - Get Certificate by Common Name

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Retrieves the certificate from the Apple Keychain that matches the specified common name (CN).

Note: This example requires Chilkat v10.0.0 or greater.

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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[])
  {
    // On MacOS or iOS, this searches both the Default keychains and System keychains for the certificate
    // having the specified CN.
    CkCert cert = new CkCert();
    boolean success = cert.LoadByCommonName("Certum CA");
    if (success == false) {
        System.out.println(cert.lastErrorText());
        return;
        }

    System.out.println(cert.subjectDN());

    // Note: In the Apple Keychain, a certificate with its private key represents an identity because it combines the certificate and its private key.
    // When Chilkat loads a certificate from the Apple Keychain, it also gets the associated private key.
    // You can simply use the cert in other places in Chilkat where a cert w/ private key is required.
    CkCert cert2 = new CkCert();
    success = cert2.LoadByCommonName("Chilkat Software, Inc.");
    if (success == false) {
        System.out.println(cert2.lastErrorText());
        return;
        }

    System.out.println(cert2.subjectDN());
    boolean hasPrivKey = cert2.HasPrivateKey();
    System.out.println("Has private key: " + hasPrivKey);

    System.out.println("Success.");
  }
}