Get the Signer Certificate of a Signed Email

See more Email Object Examples

Demonstrates the Chilkat Email.LastSignerCert method, which copies the certificate for the signer at a given zero-based index into a Cert object. Most signed emails have one signer (index 0), but a message can have more than one. This example loads a signed email and reads the first signer's common name.

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    boolean success = false;

    //  Demonstrates the LastSignerCert method, which copies the certificate for the signer at
    //  the given zero-based index into a Cert object.  Most signed emails have one signer
    //  (index 0), but a message can have more than one.

    CkEmail email = new CkEmail();

    success = email.LoadEml("qa_data/eml/signed.eml");
    if (success == false) {
        Log.i(TAG, email.lastErrorText());
        return true;
        }

    if (email.get_ReceivedSigned() == true) {
        //  Get the certificate of the first signer (index 0).
        CkCert cert = new CkCert();
        success = email.LastSignerCert(0,cert);
        if (success == true) {
            Log.i(TAG, "Signer certificate (CN): " + cert.subjectCN());
            }

        }

    //  Note: The path "qa_data/..." is a relative local filesystem path,
    //  relative to the current working directory of the running application.

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}