Using a .cer Certificate File for Encrypted Email

Sends an encrypted email using the recipient's digital certificate from a .cer 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.comcast.net");

    //  Load the .cer file into a certificate object:
    CkCert cert = new CkCert();
    success = cert.LoadFromFile("comodoChilkat.cer");
    if (success != true) {
        System.out.println(cert.lastErrorText());
        return;
    }

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

    email.put_Subject("This email is encrypted");
    email.put_Body("This is a digitally encrypted mail");
    email.put_From("Chilkat Support <support@chilkatsoft.com>");
    email.AddTo("Comodo Test","comodo@chilkatsoft.com");

    //  Indicate that the email is to be sent encrypted.
    email.put_SendEncrypted(true);

    //  Specify the certificate:
    email.SetEncryptCert(cert);

    success = mailman.SendEmail(email);
    if (success != true) {
        System.out.println(mailman.lastErrorText());
    }
    else {
        System.out.println("Mail Sent!");
    }

  }
}