/**
* Copyright (C) 2010-2017 Gordon Fraser, Andrea Arcuri and EvoSuite
* contributors
*
* This file is part of EvoSuite.
*
* EvoSuite is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3.0 of the License, or
* (at your option) any later version.
*
* EvoSuite 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
* Lesser Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
*/
package org.evosuite.utils;
import java.io.File;
import java.io.IOException;
import java.math.BigInteger;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
* <p>
* MD5 class.
* </p>
*
* @author José Campos
*/
public class MD5 {
/**
* Return the md5-hash of a string
* based on Heshan Perera @ http://stackoverflow.com/a/10530959/998816
*
* @param s
* @return
*/
public static String hash(String s) {
try {
MessageDigest m = MessageDigest.getInstance("MD5");
m.update(s.getBytes(), 0, s.length());
BigInteger i = new BigInteger(1,m.digest());
return String.format("%1$032x", i);
}
catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return null;
}
/**
* Return the md5-hash of a file
*
* @param s
* @return
*/
public static String hash(File f) {
try {
byte[] encoded = Files.readAllBytes(Paths.get(f.getAbsolutePath()));
String content = new String(encoded, Charset.defaultCharset());
return MD5.hash(content);
}
catch (IOException e) {
e.printStackTrace();
}
return null;
}
}