Opc.Ua.CertificateValidator.Validate C# (CSharp) Method

        public virtual void Validate(X509Certificate2 certificate)
        {
            Validate(new X509Certificate2Collection() { certificate });
        }

        /// <summary>
        /// Validates a software certificate.
        /// </summary>
        public static ServiceResult Validate(
            CertificateValidator validator,
            byte[] signedCertificate, 
            out SoftwareCertificate softwareCertificate)
        {
            softwareCertificate = null;

            // validate the certificate.
            X509Certificate2 certificate = null;

            try
            {
                certificate = CertificateFactory.Create(signedCertificate, true);
                validator.Validate(certificate);
            }
            catch (Exception e)
            {
                return ServiceResult.Create(e, StatusCodes.BadDecodingError, "Could not decode software certificate body.");
            }

            // find the software certficate.
            byte[] encodedData = null;

            foreach (X509Extension extension in certificate.Extensions)
            {
                if (extension.Oid.Value == "0.0.0.0.0")
                {
                    encodedData = extension.RawData;
                    break;
                }
            }

            if (encodedData == null)
            {
                return ServiceResult.Create(StatusCodes.BadCertificateInvalid, "Could not find extension containing the software certficate.");
            }

            try
            {
                MemoryStream istrm = new MemoryStream(encodedData, false);
                DataContractSerializer serializer = new DataContractSerializer(typeof(SoftwareCertificate));
                softwareCertificate = (SoftwareCertificate)serializer.ReadObject(istrm);
                softwareCertificate.SignedCertificate = certificate;
            }
            catch (Exception e)
            {
                return ServiceResult.Create(e, StatusCodes.BadCertificateInvalid, "Certificate does not contain a valid SoftwareCertificate body.");
            }

            // certificate is valid.
            return ServiceResult.Good;
        }