/*
* source: http://www.bennyn.de/programmierung/java/sha-512-verschlusselung-mit-java.html
*/
package budgetforce.control.login;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
*
* @author kinske
*/
public class SecretMaker2 {
private static String convertToHex(byte[] data)
{
StringBuffer buf = new StringBuffer();
for (int i = 0; i < data.length; i++)
{
int halfbyte = (data[i] >>> 4) & 0x0F;
int two_halfs = 0;
do
{
if ((0 <= halfbyte) && (halfbyte <= 9))
buf.append((char) ('0' + halfbyte));
else
buf.append((char) ('a' + (halfbyte - 10)));
halfbyte = data[i] & 0x0F;
}
while(two_halfs++ < 1);
}
return buf.toString();
}
public static String SHA512(String text)
throws NoSuchAlgorithmException, UnsupportedEncodingException
{
MessageDigest md;
//add at every encryption a secret
String value = text + "DaVeLicIous";
md = MessageDigest.getInstance("SHA-512");
byte[] sha1hash = new byte[40];
md.update(value.getBytes("UTF-8"), 0, text.length());
sha1hash = md.digest();
return convertToHex(sha1hash);
}
}