package gov.nist.registry.common2.io;
import java.io.File;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class Sha1x {
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 SHA1(String text)
throws NoSuchAlgorithmException, UnsupportedEncodingException {
MessageDigest md;
md = MessageDigest.getInstance("SHA-1");
byte[] sha1hash = new byte[40];
md.update(text.getBytes("iso-8859-1"), 0, text.length());
sha1hash = md.digest();
return convertToHex(sha1hash);
}
public static void main(String[] argv) throws Exception {
// String in = "Jelani Nelson";
// byte[] inb = in.getBytes();
// Sha1Bean sb = new Sha1Bean();
// sb.setByteStream(inb);
// System.out.println("sha1 of 'Jelani Nelson' is " + sb.getSha1String());
String fin = Io.stringFromFile(new File("/Users/bill/ihe/testing/sha1/utf8ccds/gallowYounger.xml"));
String sha1 = Sha1x.SHA1(fin);
System.out.println(sha1);
// fin = Io.stringFromFile(new File("/Users/bill/tmp/hash/rep.txt"));
// inb = fin.getBytes();
// sb = new Sha1Bean();
// sb.setByteStream(inb);
// System.out.println("sha1 of 'rep.txt' is " + sb.getSha1String());
}
}