web和winform的MD5加密

MD5加密，web和winform

Web

/// <summary>
        /// 获取获取MD5加密后字符串
        /// </summary>
        /// <param name="sourceString">源字符串</param>
        /// <param name="digits">加密位数(16或32)</param>
        /// <param name="isToUpper">是否大写</param>
        /// <returns></returns>
        public static string Md5Encode(string sourceString, int digits, bool isToUpper)
        {
            if (string.IsNullOrEmpty(sourceString))
                return string.Empty;
            var targetString = digits == 16
                                   ? System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(
                                       sourceString, "MD5").Substring(8, 16)
                                   : System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(
                                       sourceString, "MD5");
            if (targetString != null) return isToUpper ? targetString.ToUpper() : targetString.ToLower();
            return null;
        }

Winform

/// <summary>
        /// 加密
        /// </summary>
        /// <param name="source">加密字符串</param>
        /// <returns></returns>
        private string MD5(string source)
        {
            MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
            byte[] encryptedBytes = md5.ComputeHash(Encoding.ASCII.GetBytes(source));
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < encryptedBytes.Length; i++)
            {
                sb.AppendFormat("{0:X2}", encryptedBytes[i]);
            }
            return sb.ToString();
        }

 16位：截取8到16位，Substring(8, 16)