(Android™) Use Base64 RSA Key to Encrypt

Loads a Base64 RSA key and uses it to encrypt a string, returning the result in base64.

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.

    CkPublicKey pubkey = new CkPublicKey();

    boolean success = pubkey.LoadBase64("MIICdgIBADA ... A9PXLk+j5A==");
    if (success != true) {
        Log.i(TAG, pubkey.lastErrorText());
        return;
        }

    CkRsa rsa = new CkRsa();

    success = rsa.ImportPublicKeyObj(pubkey);
    if (success != true) {
        Log.i(TAG, rsa.lastErrorText());
        return;
        }

    rsa.put_EncodingMode("base64");

    String encryptedStr = rsa.encryptStringENC("12345678",false);

    Log.i(TAG, encryptedStr);

  }

  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."
  }
}