(Android™) PKCS11 Import an Existing RSA Public Key onto the HSM

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Demonstrates how to import an existing RSA Public Key onto a smart card or token.

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

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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);

    // 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;
    boolean success = pkcs11.QuickSession(userType,pin);
    if (success == false) {
        Log.i(TAG, pkcs11.lastErrorText());
        return;
        }

    // Generate a new 2048-bit RSA key.
    CkRsa rsa = new CkRsa();
    success = rsa.GenerateKey(2048);
    if (success == false) {
        Log.i(TAG, rsa.lastErrorText());
        return;
        }

    // Get the public key information as XML, so we can access the modulus and exponent.
    CkXml xml = new CkXml();
    xml.LoadXml(rsa.exportPublicKey());

    CkJsonObject attrs = new CkJsonObject();
    // Specify the type of object, and the type of key.
    attrs.UpdateString("class","CKO_PUBLIC_KEY");
    attrs.UpdateString("key_type","CKK_RSA");
    // Add an optional label if desired.
    attrs.UpdateString("label","RSA Public Key 1");
    // Allow the key to be use for verify, wrapping, and encryption operations.
    attrs.UpdateBool("verify",true);
    attrs.UpdateBool("wrap",true);
    attrs.UpdateBool("encrypt",true);

    // Make this a session-only public key.
    // To store the public key on the token so that it persists after the PKCS11 session, set token = true.
    attrs.UpdateBool("token",false);

    // Provide the RSA public key material
    attrs.UpdateString("modulus",xml.getChildContent("Modulus"));
    attrs.UpdateString("public_exponent",xml.getChildContent("Exponent"));

    // Create the RSA public key.
    // Returns the PKCS11 object handle of the created 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 imported an RSA key..");
        }

    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."
  }
}