MD5加密

最新推荐文章于 2024-05-10 10:28:10 发布

原创最新推荐文章于 2024-05-10 10:28:10 发布

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public final static String encrypt(String s){
     char hexDigits[] = {
         '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd',
         'e', 'f'};
     try {
       byte[] strTemp = s.getBytes();
       MessageDigest mdTemp = MessageDigest.getInstance("MD5");
       mdTemp.update(strTemp);
       byte[] md = mdTemp.digest();
       int j = md.length;
       char str[] = new char[j * 2];
       int k = 0;
       for (int i = 0; i < j; i++) {
         byte byte0 = md[i];
         str[k++] = hexDigits[byte0 >>> 4 & 0xf];
         str[k++] = hexDigits[byte0 & 0xf];
         }
         return new String(str);
       }
       catch (Exception e){
        e.printStackTrace();
         return null;
       }
   }

public static void main(String[] args) throws NoSuchAlgorithmException{
   System.out.println(MD5.encrypt("1"));

}

public static String byte2hex(byte[] bytes) {
   String result = "";
   String stmp = "";
   for (int n = 0; n < bytes.length; n++) {
    stmp = (java.lang.Integer.toHexString(bytes[n] & 0xFF));
    if (stmp.length() == 1) result = result + "0" + stmp;
    else
     result = result + stmp;
   }
   return result;
  }

public static void main(String[] args) throws NoSuchAlgorithmException{
   String value= "1";
   String result ="";
   MessageDigest messageDigest = MessageDigest.getInstance("MD5");
   messageDigest.update(value.getBytes());
   result = byte2hex(messageDigest.digest());

System.out.println(result);

}