package org.uli.sha256;
import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class SHA256 {
public String sha2hex(String input) throws NoSuchAlgorithmException, UnsupportedEncodingException {
byte[] bytesOfMessage = input.getBytes();
MessageDigest md = MessageDigest.getInstance("SHA-256");
byte[] thedigest = md.digest(bytesOfMessage);
BigInteger bigInt = new BigInteger(1, thedigest);
String hashtext = bigInt.toString(16);
// Now we need to zero pad it if you actually want the full 32 chars.
while (hashtext.length() < 32) {
hashtext = "0" + hashtext;
}
return hashtext;
}
static public void main(String[] args) throws Exception {
SHA256 sha256 = new SHA256();
for (String arg : args) {
System.out.println(sha256.sha2hex(arg));
}
}
}