Opc.Ua.DirectoryCertificateStore.GetFileName C# (CSharp) Method

        private string GetFileName(X509Certificate2 certificate)
        {
            // build file name.
            string commonName = certificate.FriendlyName;

            List<string> names = Utils.ParseDistinguishedName(certificate.Subject);

            for (int ii = 0; ii < names.Count; ii++)
            {
                if (names[ii].StartsWith("CN="))
                {
                    commonName = names[ii].Substring(3).Trim();
                    break;
                }
            }

            StringBuilder fileName = new StringBuilder();

            // remove any special characters.
            for (int ii = 0; ii < commonName.Length; ii++)
            {
                char ch = commonName[ii];

                if ("<>:\"/\\|?*".IndexOf(ch) != -1)
                {
                    ch = '+';
                }

                fileName.Append(ch);
            }

            fileName.Append(" [");
            fileName.Append(certificate.Thumbprint);
            fileName.Append("]");

            return fileName.ToString();
        }