Hash string
// Openbravo POS is a point of sales application designed for touch screens.
// Copyright (C) 2007-2009 Openbravo, S.L.
// http://www.openbravo.com/product/pos
//
// This file is part of Openbravo POS.
//
// Openbravo POS is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Openbravo POS is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Openbravo POS. If not, see <http://www.gnu.org/licenses/>.
//package com.openbravo.pos.pda.util;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
*
* @author jaroslawwozniak
*/
public class StringUtils {
private static final char[] hexchars = { '0', '1', '2', '3', '4', '5', '6',
'7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
public static String byte2hex(byte[] binput) {
StringBuffer sb = new StringBuffer(binput.length * 2);
for (int i = 0; i < binput.length; i++) {
int high = ((binput[i] & 0xF0) >> 4);
int low = (binput[i] & 0x0F);
sb.append(hexchars[high]);
sb.append(hexchars[low]);
}
return sb.toString();
}
public static byte[] hex2byte(String sinput) {
int length = sinput.length();
if ((length & 0x01) != 0) {
throw new IllegalArgumentException("odd number of characters.");
}
byte[] out = new byte[length >> 1];
// two characters form the hex value.
for (int i = 0, j = 0; j < length; i++) {
int f = Character.digit(sinput.charAt(j++), 16) << 4;
f = f | Character.digit(sinput.charAt(j++), 16);
out[i] = (byte) (f & 0xFF);
}
return out;
}
public static String hashString(String sPassword) {
if (sPassword == null || sPassword.equals("")) {
return "empty:";
} else {
try {
MessageDigest md = MessageDigest.getInstance("SHA-1");
md.update(sPassword.getBytes("UTF-8"));
byte[] res = md.digest();
return "sha1:" + byte2hex(res);
} catch (NoSuchAlgorithmException e) {
return "plain:" + sPassword;
} catch (UnsupportedEncodingException e) {
return "plain:" + sPassword;
}
}
}
}
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