Add S/MIME Signature using PFX

Add a digital signature to a MIME message using the certificate + private key from a PFX file.

 Chilkat Java Library Downloads for Windows, Linux, and MAC OS X

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[])
  {
    CkMime mime = new CkMime();

    boolean success;
    success = mime.UnlockComponent("Anything for 30-day trial");
    if (success == false) {
        System.out.println(mime.lastErrorText());
        return;
    }

    //  Load a PFX file into a certificate object.
    CkCert cert = new CkCert();
    String pfxFilepath;
    pfxFilepath = "pfxFiles/something.pfx";
    String pfxPassword;
    pfxPassword = "secret";
    success = cert.LoadPfxFile(pfxFilepath,pfxPassword);
    if (success == false) {
        System.out.println(cert.lastErrorText());
        return;
    }

    mime.SetBodyFromPlainText("This is the plain-text MIME body.");

    mime.put_Charset("utf-8");
    mime.put_Encoding("quoted-printable");

    //  Sign the MIME:
    success = mime.AddDetachedSignature(cert);
    if (success == false) {
        System.out.println(mime.lastErrorText());
        return;
    }

    //  Save the S/MIME to a file.
    success = mime.SaveMime("c:/temp/signedMime.txt");
    if (success == false) {
        System.out.println(mime.lastErrorText());
        return;
    }

    System.out.println("success!");

  }
}