(Android™) PKCS7 Decrypt MIME

Loads a PKCS7 encrypted MIME file and decrypts. The cert and private key used for decryption is loaded from a PFX file.

Chilkat Android™ Downloads Android™ Java Libraries Android C/C++ Libraries

// 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);

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkMime mime = new CkMime();

    // Load the MIME
    boolean success = mime.LoadMimeFile("encryptedMime.txt");
    if (success == false) {
        Log.i(TAG, mime.lastErrorText());
        return;
        }

    // The AddPfxSourceFile and/or AddPfxSourceData
    // methods may be called one or more times (one per PFX)
    // to add sources from which the MIME component will
    // search for certificates and private keys when decrypting.
    String pfxPassword = "myPassword";
    success = mime.AddPfxSourceFile("myCertAndPrivateKey.pfx",pfxPassword);
    if (success == false) {
        Log.i(TAG, mime.lastErrorText());
        return;
        }

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

    // Display the decrypted MIME:
    Log.i(TAG, mime.getMime());

  }

  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."
  }
}