import java.util.zip.Inflater;
import java.util.zip.InflaterInputStream;
// ................
public static void main(String[] args)
{
System.out.println("DecryptorTest HELLO");
//Security.addProvider( new IAIK() ); // using IAIK Security Provider
java.security.Security.addProvider(new gnu.crypto.jce.GnuCrypto());
// Using Hex in Apache Commons:
// byte[] bytes = Hex.decodeHex(key0.toCharArray());
StringBuilder keyc = new StringBuilder();
for (int i = 0; i < key0.length(); i+=2) {
String str = key0.substring(i, i+2);
keyc.append((char)Byte.parseByte(str, 16));
}
System.out.println("DecryptorTest: Common secret key (plain) =" + keyc);
MD5 md5 = new MD5();
//IMessageDigest md5 = HashFactory.getInstance("MD5");
byte[] iv;
try {
iv = iv0.getBytes( "UTF-8" );
} catch (UnsupportedEncodingException e1) {
System.out.println("DecryptorTest: Error: UnsupportedEncodingException (UTF-8)");
return;
}
System.out.println("DecryptorTest: Common initialization vector length (bytes) =" + iv.length);
md5.update(iv, 0, iv.length);
String ivh = "";
iv = md5.digest();
for (int i = 0; i < iv.length; i++) {
ivh += String.format("%02x", iv[i] );
}
System.out.println("DecryptorTest: Common initialization vector (MD5) =" + ivh);
// encrypt the user password and convert it to Hex
String passwordh;
try {
passwordh = encrypt( password0, keyc.toString(), iv );
} catch ( InvalidKeyException
| UnsupportedEncodingException
| IllegalBlockSizeException
| BadPaddingException
| NoSuchAlgorithmException
| NoSuchProviderException
| NoSuchPaddingException
| InvalidAlgorithmParameterException e)
{
System.out.println("DecryptorTest: Error: cannot encrypt user password! Exception="+e.toString());
return;
}
System.out.println("DecryptorTest: Personal password (encripted, hex) =" + passwordh);
md5.reset();
try {
md5.update(password0.getBytes("UTF-8"), 0, password0.getBytes("UTF-8").length);
} catch (UnsupportedEncodingException e) {
System.out.println("DecryptorTest: Error: cannot prepare password (no UTF-8 encoding)");
return;
}
byte[] pwd5 = md5.digest();
//System.out.println("DecryptorTest: Personal password (MD5, hex) =" + password5);
int keysize;
keysize = 32; // Cipher.getMaxAllowedKeyLength("Twofish/CBC/NoPadding");
System.out.println("DecryptorTest: maximum key size ="+keysize );
URL url;
try {
url = new URL(surl);
} catch (MalformedURLException e) {
System.out.println("DecryptorTest: Error: Malformed URL");
return;
}
HttpURLConnection conn;
try {
conn = (HttpURLConnection) url.openConnection();
String post;
post = "user=shestero";
post+= "&password="+passwordh;
conn.setDoOutput(true); // мы будем писать POST данные
conn.setDoInput(true);
OutputStreamWriter out =
new OutputStreamWriter( conn.getOutputStream(), "UTF-8" );
out.write(post);
// out.write("\r\n"); // перевод строки попадает в значения, передаваемые POST-ом
out.close();
PushbackInputStream stream = new PushbackInputStream( conn.getInputStream(), 1 );
int i0 = stream.read();
if (i0<0)
{
System.out.println("DecryptorTest: Warning: empty reply!");
}
else
{
stream.unread(i0);
InflaterInputStream inf = null;
if (i0==0)
{
// encrypted
stream.skip(32); // skip header
System.out.println("DecryptorTest: Note: data comes encrypted!");
byte[] key2 = new byte[32];
Arrays.fill(key2,(byte)0);
int j=0;
for (int i=0; i<keyc.length() || i<pwd5.length; i++)
{
if (i<keyc.length()) key2[j++]=keyc.toString().substring(i,i+1).getBytes()[0];
if (i<pwd5.length) key2[j++]=pwd5[i];
if (j>=keysize)
break;
}
System.out.println("DecryptorTest: Personal key to decript reply =["+key2+"]");
// TODO: Fix key size
if (j<=16) j=16; else if (j<=24) j=24; else if (j<32) j=32;
System.out.println("DecryptorTest: key2.length="+j);
Cipher cipher = createCipher( Cipher.DECRYPT_MODE, key2, iv );
inf = new InflaterInputStream(
new CipherInputStream( stream, cipher ),
new Inflater(true) // set 'nowrap' parameter to 'true' here
);
// r = new BufferedReader( new InputStreamReader( new CipherInputStream( stream, cipher ) ) );
}
else
{
// plain
System.out.println("DecryptorTest: Warning: data comes unencrypted!");
inf = new InflaterInputStream( stream, new Inflater(true) );
//r = new BufferedReader( new InputStreamReader( stream ) );
}
BufferedReader r = new BufferedReader( new InputStreamReader( inf ) );
// Чтение строка за строкой для проверки
System.out.println("====[REPLY FROM SERVER:]===========================");
String inputLine;
while ((inputLine = r.readLine()) != null)
{
System.out.println(inputLine);
}
r.close();
System.out.println("====[SUCESS]=======================================");
}
} catch (IOException e) {
System.out.println("DecryptorTest: Error: IOException; URL="+surl);
} catch ( InvalidKeyException
| NoSuchAlgorithmException
| NoSuchProviderException
| NoSuchPaddingException
| InvalidAlgorithmParameterException e)
{
System.out.println("DecryptorTest: Error: cannot decode: Exception="+e.toString());
}
System.out.println("DecryptorTest BYE");
} |
