Use an XmlCertVault for S/MIME Operations

See more MIME Examples

Loads a CMS/PKCS #7 encrypted S/MIME message and decrypts it back to the original MIME content.

UseCertVault sets an XmlCertVault as the single active source of certificates and private keys for S/MIME encryption, decryption, signing, and verification.

The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

// 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;

    CkMime mime = new CkMime();
    success = mime.LoadMimeFile("qa_data/encrypted.eml");
    if (success == false) {
        Log.i(TAG, mime.lastErrorText());
        return;
        }

    //  Use an XmlCertVault as the source of certificates and private keys for S/MIME operations.  The
    //  only argument is the vault.  Only one vault is active at a time.
    CkXmlCertVault vault = new CkXmlCertVault();
    String pfxPassword = "myPfxPassword";
    success = vault.AddPfxFile("qa_data/recipient.pfx",pfxPassword);
    if (success == false) {
        Log.i(TAG, vault.lastErrorText());
        return;
        }

    success = mime.UseCertVault(vault);
    if (success == false) {
        Log.i(TAG, mime.lastErrorText());
        return;
        }

    //  Decryption (and signing/verification) now draws credentials from the vault.
    success = mime.Decrypt();
    if (success == false) {
        Log.i(TAG, mime.lastErrorText());
        return;
        }

    Log.i(TAG, "Decrypted using the certificate vault.");

  }

  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."
  }
}