anyone can help me ???
2013/1/10, Ines <belhouchet.i...@gmail.com>:
>
>
> i have some problems when i try to encrypt a string with a public key
> stored in res/raw thesis the encrypt method code:
>
> public static byte[] encryptRSA(Context mContext, byte[] message) throws
> Exception {
>
> // reads the public key stored in a file
> InputStream is =
> mContext.getResources().openRawResource(R.raw.marchandpkey);
> BufferedReader br = new BufferedReader(new InputStreamReader(is));
> List<String> lines = new ArrayList<String>();
> String line = null;
> while ((line = br.readLine()) != null)
> lines.add(line);
>
> // removes the first and last lines of the file (comments)
> if (lines.size() > 1 && lines.get(0).startsWith("-----") &&
> lines.get(lines.size()-1).startsWith("-----")) {
> lines.remove(0);
> lines.remove(lines.size()-1);
> }
>
> // concats the remaining lines to a single String
> StringBuilder sb = new StringBuilder();
> for (String aLine: lines)
> sb.append(aLine);
> String keyString = sb.toString();
> Log.d("log", "keyString:"+keyString);
>
> // converts the String to a PublicKey instance
> byte[] keyBytes = Base64.decode(keyString.getBytes("utf-8"),
> DEFAULT_KEYS_DIALER);
> X509EncodedKeySpec spec = new X509EncodedKeySpec(keyBytes);
> KeyFactory keyFactory = KeyFactory.getInstance("RSA");
> PublicKey key = keyFactory.generatePublic(spec);
>
>
>
> byte[] encryptedText = null;
> Cipher cipher = Cipher.getInstance("RSA");
> cipher.init(Cipher.ENCRYPT_MODE, key);
> encryptedText = cipher.doFinal(Base64.decode(message,
> DEFAULT_KEYS_DIALER));
>
> return encryptedText;
> }
>
> `
>
> and here in "oncreate method" i make a call for the encrypt method:
>
> final String KEY_BOOK = "mes_item_to_crypt";
> byte[] first_message = KEY_BOOK.getBytes();
> byte[] second_message = null;
> try {
> second_message=encryptRSA(getApplicationContext(), first_message);
> Toast.makeText(getApplicationContext(),
> ""+second_message.toString(), Toast.LENGTH_SHORT).show();
> } catch (Exception e1) {
> // TODO Auto-generated catch block
> e1.printStackTrace();
> }
>
> i got this in the logcat screen:
>
> * 01-10 01:03:33.620: W/System.err(672):
> java.security.spec.InvalidKeySpecException:
> java.lang.IllegalArgumentException: Bad sequence size: 301-10 01:03:33.620:
> W/System.err(672): at
> org.bouncycastle.jce.provider.JDKKeyFactory.engineGeneratePublic(JDKKeyFactory.java:92)01-10
> 01:03:33.630: W/System.err(672): at
> org.bouncycastle.jce.provider.JDKKeyFactory$RSA.engineGeneratePublic(JDKKeyFactory.java:396)01-10
> 01:03:33.630: W/System.err(672): at
> java.security.KeyFactory.generatePublic(KeyFactory.java:177)01-10
> 01:03:33.630: W/System.err(672): at
> fsg.mpssri.Megabook.Show.MainLivres.encryptRSA(MainLivres.java:441)01-10
> 01:03:33.630: W/System.err(672): at
> fsg.mpssri.Megabook.Show.MainLivres.onCreate(MainLivres.java:168)*
>
> and this's my public key stored in res/raw
>
> -----BEGIN
> CERTIFICATE-----MIIDuDCCAqACCQDxZX5jygcxvzANBgkqhkiG9w0BAQUFADCBnTELMAkGA1UEBhMC
> VE4xEDAOBgNVBAgMB1RVTklTSUUxDTALBgNVBAcMBFNGQVgxFTATBgNVBAoMDEluZXNDb21wYWdueTETMBEGA1UECwwKU2VydmV1cldlYjEXMBUGA1UEAwwOaW5lc2Rv
> bWFpbmUudG4xKDAmBgkqhkiG9w0BCQEWGWJlbGhvdWNoZXQuaW5lc0BnbWFpbC5j
> b20wHhcNMTMwMTA5MTQwMzE1WhcNMTQwMTA5MTQwMzE1WjCBnTELMAkGA1UEBhMC
> VE4xEDAOBgNVBAgMB1RVTklTSUUxDTALBgNVBAcMBFNGQVgxFTATBgNVBAoMDEluZXNDb21wYWdueTETMBEGA1UECwwKU2VydmV1cldlYjEXMBUGA1UEAwwOaW5lc2Rv
> bWFpbmUudG4xKDAmBgkqhkiG9w0BCQEWGWJlbGhvdWNoZXQuaW5lc0BnbWFpbC5j
> b20wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDtGJbgWuUOyQ4KgfbbVsPO+5/xnBSZlPb7CnW/IHfibcQ+29EALFVp/cpZfn4WdPtQGjSU7cFY7wcoOLnl
> vDWB5B4JLJHiUnTnvQT3GA1toJFkj0wqOgggfpq/ia5wCREqd7JnVfCJ/kA77M4e
> fl5ArmObwe1XQy+DRYk67rx1NZ2c2eiEcwUj/v+puF+xJzVpdCg93dbEhTf9A7t2
> loqESsBiX2CVaMtLLUK3y+g8etKL51m/PZHVXDMwJTkoje9X3cjh133YuxScMqVm
> jL40p1/vHAhtkVbnned0yjLPKLH+pCI4mB285WCY7Tn6UupBZG4ttzHFdQpdq0E4UNsFAgMBAAEwDQYJKoZIhvcNAQEFBQADggEBANRPF1TcksXetiscM6qxd9CmgV9/
> atkLghMNd/EU6H3E8HB1WPhvo9bdTO+uz1lUJW3vrDpOhp/cU+P1k9cplD8k9Mml5EK0sJbS63Gl7J3h7U9QDwQ9EIU5eOanhi19wBs775LU6aqXXDE/nzE+XSoEvV0AIMlmqd7Yo0VRqqdD0Pg9ih7MD583ApnRDXzxzvbL6ioHnRyrrtWPfMtA0EqbcwsgPovq7vL7jdqgx4HD/a8mlvKvM4y4khZox4wr8uJq/KtcbFy4BRsk7BwQVcssAyDRLXNr/u/mb7fhMj9fTNh2GGbNPjspvctAp3WIlkZeSLFZhA/QolutsnJ2nKc=-----END
> CERTIFICATE-----
>
> please help me with any idea,i just want to encrypt a string on android
> with a public_key ,this public key i make it in the web server side (php).
> my point is to encrypt a string in android with the web server public key
> and after that i will decrypt that string in php (server side ). please i
> need your help .
> thanks
> <http://stackoverflow.com/questions/tagged/android>
>
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