Send Signed Email using PFX File

Demonstrates how to send a signed email using a digital certificate w/ private key stored in a PFX file.

Download Chilkat Java Library

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[])
  {
    //  The mailman object is used for sending and receiving email.
    CkMailMan mailman = new CkMailMan();

    //  Any string argument automatically begins the 30-day trial.
    boolean success;
    success = mailman.UnlockComponent("30-day trial");
    if (success != true) {
        System.out.println("Component unlock failed");
        return;
    }

    //  Set the SMTP server.
    mailman.put_SmtpHost("smtp.mymailserver.com");

    //  Create a new email object
    CkEmail email = new CkEmail();

    email.put_Subject("This email is signed");
    email.put_Body("This is a digitally signed mail");
    email.put_From("Chilkat Admin <admin@chilkatsoft.com>");
    email.AddTo("Chilkat Support","support@chilkatsoft.com");

    //  Indicate that the email should be sent signed.
    email.put_SendSigned(true);

    //  Create an instance of a certificate store object, load a PFX file,
    //  locate the certificate we need, and use it for signing.
    //  (a PFX file may contain more than one certificate.)
    CkCertStore certStore = new CkCertStore();
    //  The 1st argument is the filename, the 2nd arg is the
    //  PFX file's password:
    success = certStore.LoadPfxFile("chilkatsoft_secret.pfx","secret");
    if (success != true) {
        System.out.println(certStore.lastErrorText());
        return;
    }

    CkCert cert;
    cert = certStore.FindCertBySubjectE("admin@chilkatsoft.com");
    if (cert == null ) {
        System.out.println(certStore.lastErrorText());
        return;
    }

    //  If a PFX file is known to contain a single certificate,
    //  you may load it directly into a Chilkat certificate object.
    //  This snippet of source code shows how:
    CkCert cert2 = new CkCert();
    //  The 1st argument is the filename, the 2nd arg is the
    //  PFX file's password:
    success = cert2.LoadPfxFile("chilkatsoft_secret.pfx","secret");
    if (success != true) {
        System.out.println(cert.lastErrorText());
        return;
    }

    //  This example will use the cert from the certStore...
    email.SetSigningCert(cert);

    //  Send a signed email.
    success = mailman.SendEmail(email);
    if (success != true) {
        System.out.println(mailman.lastErrorText());
    }
    else {
        //  The LastErrorText property provides information
        //  even when successful.
        System.out.println(mailman.lastErrorText());
        System.out.println("Mail Sent!");
    }

  }
}