MD5加密过时方法替换

使用System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile进行MD5加密时，会出现已过时

 /// <summary>

 /// 32位MD5加密

 /// </summary>

 /// <param name="input"></param>

 /// <returns></returns>

 private static string Md5Hash(string input)

 {

     MD5CryptoServiceProvider md5Hasher = new MD5CryptoServiceProvider();

     byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(input));

     StringBuilder sBuilder = new StringBuilder();

     for (int i = ; i < data.Length; i++)

     {

         sBuilder.Append(data[i].ToString("x2"));

     }

     return sBuilder.ToString();

 }