Android™

Provide a Certificate Vault to an Email

Demonstrates the Chilkat Email.UseCertVault method, which adds an XML certificate vault to the email's internal certificate and private-key lookup sources for encryption, decryption, signing, and verification. This example builds a vault from a PFX and attaches it to the email.

Background: A certificate vault is a portable, in-memory store of certificates and private keys. Instead of wiring up each certificate individually for every operation, you load your credentials into one XmlCertVault and hand it to the email; Chilkat then draws on it automatically whenever it needs a key — to decrypt an incoming message, sign an outgoing one, or verify a signature. This is especially convenient on platforms without an OS certificate store.

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// 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;

    //  Demonstrates the UseCertVault method, which adds an XML certificate vault to the email's
    //  internal certificate and private-key lookup sources for encryption, decryption, signing,
    //  and verification.

    CkEmail email = new CkEmail();

    //  Build a certificate vault from a PFX (certificate + private key).
    CkXmlCertVault vault = new CkXmlCertVault();
    success = vault.AddPfxFile("qa_data/certs/certs.pfx","pfx_password");
    if (success == false) {
        Log.i(TAG, vault.lastErrorText());
        return true;
        }

    //  Make the vault available to the email object for crypto operations.
    success = email.UseCertVault(vault);
    if (success == false) {
        Log.i(TAG, email.lastErrorText());
        return true;
        }

    Log.i(TAG, "Certificate vault attached to the email.");

    //  Note: The path "qa_data/certs/certs.pfx" is a relative local filesystem path,
    //  relative to the current working directory of the running application.

  }

  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."
  }
}