c# winform md5

[墨香年少 32]

public string generate_md5(string str)
        {
            try
            {
                MD5 md5 = new MD5CryptoServiceProvider();
                byte[] fromData = System.Text.Encoding.UTF8.GetBytes(str);
                byte[] targetData = md5.ComputeHash(fromData);
                StringBuilder decByt = new StringBuilder();
                decByt.Clear();
                for (int i = 0; i < targetData.Length; i++)
                {
                    decByt.Append(targetData[i].ToString("x2"));
                }
                return decByt.ToString().ToLower();
            }
            catch
            {
                return "";
            }
        }