Android™

PKCS11 Import an Existing AES Key onto the HSM

See more PKCS11 Examples

Demonstrates how to import an existing AES symmetric encrytion key onto the smartcard/token. The imported AES key is a session object, and only exists for the duration of the PKCS11 session. (AES keys are typically used for wrapping/unwrapping RSA and EC keys.)

Note: This example requires Chilkat v9.5.0.96 or later.

Android™

// 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;

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

    // Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

    CkPkcs11 pkcs11 = new CkPkcs11();

    // Use the PKCS11 driver (.dll, .so, .dylib) for your particular HSM.
    // (The format of the path will change with the operating system.  Obviously, "C:/" is not used on non-Windows systems.
    pkcs11.put_SharedLibPath("C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll");

    // Establish a logged-on session.
    String pin = "0000";
    int userType = 1;
    success = pkcs11.QuickSession(userType,pin);
    if (success == false) {
        Log.i(TAG, pkcs11.lastErrorText());
        return;
        }

    // Generate a 256-bit AES key.
    // (32 bytes is 256 bits)
    // Append 32 bytes of random data in the base64 encoding.
    CkStringBuilder sbAesKey = new CkStringBuilder();
    sbAesKey.AppendRandom(32,"base64");

    CkJsonObject attrs = new CkJsonObject();
    // Specify the type of object, and the type of key.
    attrs.UpdateString("class","CKO_SECRET_KEY");
    attrs.UpdateString("key_type","CKK_AES");
    // Add an optional label if desired.
    attrs.UpdateString("label","My AES wrapping/unwrapping key");
    // Allow the key to be use for wrapping and unwrapping operations.
    attrs.UpdateBool("wrap",true);
    attrs.UpdateBool("unwrap",true);

    // Provide the AES key material.
    attrs.UpdateString("value",sbAesKey.getAsString());

    // Create the object (i.e. create the AES key with the given key material.)
    // Returns the PKCS11 object handle of the created AES session key.
    int objHandle = pkcs11.CreatePkcs11Object(attrs);
    if (objHandle == 0) {
        Log.i(TAG, pkcs11.lastErrorText());
        Log.i(TAG, "Failed.");
        }
    else {
        Log.i(TAG, "PKCS11 object handle = " + String.valueOf(objHandle));
        Log.i(TAG, "Successfully created a 256-bit AES session key.");
        }

    // Typically, you would do other things in the PKCS11 session that use the handle of AES key we just created.
    // ...
    // ...

    pkcs11.Logout();
    pkcs11.CloseSession();

  }

  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."
  }
}