package com.example.util;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

public class MD5 {

// MD5変換

public static String Md5(String str) {

if (str != null && !str.equals("")) {

try {

MessageDigest md5 = MessageDigest.getInstance("MD5");

char[] HEX = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };

byte[] md5Byte = md5.digest(str.getBytes("UTF8"));

StringBuffer sb = new StringBuffer();

for (int i = 0; i < md5Byte.length; i++) {

sb.append(HEX[(int) (md5Byte[i] & 0xff) / 16]);

sb.append(HEX[(int) (md5Byte[i] & 0xff) % 16]);

}

str = sb.toString();

} catch (NoSuchAlgorithmException e) {

} catch (Exception e) {

}

}

return str;

}

}