(Java) AddDetachedSignaturePk

Demonstrates how to add a detached signature using a certifcate and it's corresponding private key. The easiest way of doing it is when both the certificate and private key are contained together within a PFX (.pfx or .p12) file. This example demonstrates how to use the certificate and its corresponding private key when they are stored in separate files -- a .cer for the certificate, and a .pem for the private key.

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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[])
  {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkMime mime = new CkMime();

    // Load the certificate from a .cer file.
    CkCert cert = new CkCert();
    boolean success = cert.LoadFromFile("aaworkarea/myCert.cer");
    if (success == false) {
        System.out.println(cert.lastErrorText());
        return;
        }

    // Load the private key from an encrypted PEM file.
    // (A private key can be loaded from other file formats also..)
    CkPrivateKey privKey = new CkPrivateKey();
    success = privKey.LoadEncryptedPemFile("aaworkarea/myPrivateKey.pem","myPassword");
    if (success == false) {
        System.out.println(privKey.lastErrorText());
        return;
        }

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

    // Sign the MIME (adds a PKCS7 detached signature)
    success = mime.AddDetachedSignaturePk(cert,privKey);
    if (success == false) {
        System.out.println(mime.lastErrorText());
        return;
        }

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

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