I just see garbage in your stack trace, but are you certain the private key is pkcs8 encoded?
When you test on your desktop, is that on the emulator, a java program or some other language? Also, it may not have anything to do with the android sdk, so is probably off-topic here. On Apr 26, 2012 9:27 AM, "Joseph" <[email protected]> wrote: > I am trying to decrypt a String, that I have encrypted elsewhere. Here > is my code: > > private void test() { > > try { > String > > stringMessage="Sf3O7Lr2+WN5szGyLejL3CjuBRZtQ72+ZBmgVTgWnatQZxUElzaBqFa1p0SVBqe9VWVxCxdEkejMVtDGEr0UJSVSK8EB/ > fPI6v8JE8dIu0JN0mMs4xlowhITy0tQR+1pcBtDFjzOl33xxQcq5JuPezxRDxFIp > +IVkD8FdpqlttEKf2Tvqw9tqsdgiBKb5xDvKrkIDQXdLBh1gbAVZDSJYGHRkcOA8vz2ty/ > PeooKkfDK6IOn7KBwOBgSRgQr/MLBF3Xk2vRWgVGRh/fRkzu21EWo99Q5moWKxWl3HW/ > bbgTBQTb097XP3NTID9kSPhCfL0BEfBxonuNse5GBoeRnCw=="; > //Convert String back to Byte[] and decrpt > byte[] byteMessage = > Base64.decodeBase64(stringMessage.getBytes("UTF-8")); > System.out.println("ENCRYPTED MESSAGE byte Length: > "+byteMessage.length); > > String decryptedMsg = decryptString(byteMessage, > loadCASPrivateKey()); > System.out.println(decryptedMsg); > } catch (Exception e) { > e.printStackTrace(); > return; > } > } > > private static String decryptString(byte[] message, Key privateKey) > throws InvalidKeyException, NoSuchAlgorithmException, > NoSuchPaddingException, IllegalBlockSizeException, > BadPaddingException, UnsupportedEncodingException { > Cipher cipher = Cipher.getInstance("RSA"); > cipher.init(Cipher.DECRYPT_MODE, privateKey); > > byte[] cipherData = cipher.doFinal(message); > return new String(cipherData, "UTF-8"); > } > > private PrivateKey loadCASPrivateKey() throws IOException, > NoSuchAlgorithmException, InvalidKeySpecException { > InputStream is = getClass().getResourceAsStream( "/keys/app- > private.key" ); > if (is == null) { > System.out.println("NULL"); > } > byte[] encodedPrivateKey = new byte[(int) 2000]; > is.read(encodedPrivateKey); > is.close(); > > // Generate KeyPair. > KeyFactory keyFactory = KeyFactory.getInstance("RSA"); > > PKCS8EncodedKeySpec privateKeySpec = new > PKCS8EncodedKeySpec(encodedPrivateKey); > PrivateKey privateKey = > keyFactory.generatePrivate(privateKeySpec); > > return privateKey; > > } > This works 100% how I would like it to under my desktop JVM, however > when I run it in the Android emulator I get: > > 04-24 22:42:21.011: I/System.out(1041): ��k���_��*�ݣ���93| > @0�̍4�y)��Q�k�;*A����e�#��A� �oiu:�����W5@$�w�j��uS�R�Ocxٰ&����l �w'/ > �d�8uA��ؔ�{�4$�U�0��{Ԑ��t!9��n�� ��a��'Jdt2�t�T�D��k+k�;������ ����GF�� > \�rڼ��>]�y+^w�<�� ��'E{�8R]�ZHyu��ζ��軟�ށ掱�{�A�#ȟ� > > I assume my problem is down to encoding, but I've spent all day trying > to work out what and am really stumped. > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
