public static String getDigest(String in)
	{
MessageDigest md;
try {
	md = MessageDigest.getInstance("SHA");
} catch (NoSuchAlgorithmException e) {
	return(null);
}

byte data[] = new byte[40];
data = md.digest( in.getBytes() );

String output = "";
for(int i=0; i<20; i++)
	if ( (data[i] > -1) && (data[i] < 16))
output = output + '0' + Integer.toHexString( ((int)data[i] & 0xff) );
	else
output = output + Integer.toHexString( ((int)data[i] & 0xff) );

return(output);
	}