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I am trying to to download and decrypt an encrypted XML file. I have implemented the download part and have tested with an unencrypted file and it works fine. However I now need to be able to download an XML file that has been encrypted using AES and the key "XXXX" So I am only concerned with decryption as the encryption on the XML file is already done. Here is my code so far: public NodeList getXMLDoc(){ URL url; NodeList nl = null; try{ String xmlFeed = context.getString(R.string.xml_feed); try { url = new URL(xmlFeed); URLConnection urlConnection; urlConnection = url.openConnection(); HttpURLConnection httpConnection = (HttpURLConnection) urlConnection; int responseCode = httpConnection.getResponseCode(); if(responseCode == HttpURLConnection.HTTP_OK){ String bytes = toHex("XXXX"); SecretKeySpec skeySpec = new SecretKeySpec(toByte(bytes), "AES"); try { c.init(Cipher.DECRYPT_MODE, skeySpec); //c.doFinal(); } catch (InvalidKeyException e) { e.printStackTrace(); } InputStream in = httpConnection.getInputStream(); CipherInputStream cis = new CipherInputStream(in, c); DocumentBuilderFactory dbf; dbf = DocumentBuilderFactory.newInstance(); DocumentBuilder db = dbf.newDocumentBuilder(); Document dom = db.parse(cis); Element docEle = dom.getDocumentElement(); nl = docEle.getElementsByTagName(TAG_CHAR); } } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (ParserConfigurationException e) { e.printStackTrace(); } catch (SAXException e) { e.printStackTrace(); } } finally{ } return nl; } At the minute I am trying to decrypt the whole file using CipherInputStream is this the correct approach? My code above gives me the following exception: WARN/System.err(5274): java.io.IOException: last block incomplete in decryption Is this a setup error or what might be causing this error? Are there any tutorials on how to decrypt an XML file in Android/Java? Am I going in the right direction as to how to decrypt the file or is my code completely wrong? -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en