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SSL on Self Hosting Web API

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Hi All,
I have been having some trouble getting SSL enabled for my self hosting web api.
I have been trying with the code below, but if there is a better way of doing this, i would like to know :)
I use this code to generate the cert and register it against a port:
public static X509Certificate2 GenerateCert(string certName, TimeSpan expiresIn) { var store = new X509Store(StoreName.Root, StoreLocation.LocalMachine); store.Open(OpenFlags.ReadWrite); var existingCert = store.Certificates.Find(X509FindType.FindBySubjectName, certName, false); if (existingCert.Count > 0) { store.Close(); return existingCert[0]; } else { var cert = CreateSelfSignedCertificate(certName, expiresIn); store.Add(cert); store.Close(); return cert; } } public static void RegisterSslOnPort(int port, string certThumbprint) { var appId = Guid.NewGuid(); string arguments = $"http add sslcert ipport=0.0.0.0:{port} certhash={certThumbprint} appid={{{appId}}}"; ProcessStartInfo procStartInfo = new ProcessStartInfo("netsh", arguments); procStartInfo.RedirectStandardOutput = true; procStartInfo.UseShellExecute = false; procStartInfo.CreateNoWindow = true; var process = Process.Start(procStartInfo); while (!process.StandardOutput.EndOfStream) { string line = process.StandardOutput.ReadLine(); Console.WriteLine(line); } process.WaitForExit(); } public static X509Certificate2 CreateSelfSignedCertificate(string subjectName, TimeSpan expiresIn) { // create DN for subject and issuer var dn = new CX500DistinguishedName(); dn.Encode("CN=" + subjectName, X500NameFlags.XCN_CERT_NAME_STR_NONE); // create a new private key for the certificate CX509PrivateKey privateKey = new CX509PrivateKey(); privateKey.ProviderName = "Microsoft Base Cryptographic Provider v1.0"; privateKey.MachineContext = true; privateKey.Length = 2048; privateKey.KeySpec = X509KeySpec.XCN_AT_SIGNATURE; // use is not limited privateKey.ExportPolicy = X509PrivateKeyExportFlags.XCN_NCRYPT_ALLOW_PLAINTEXT_EXPORT_FLAG; privateKey.Create(); // Use the stronger SHA512 hashing algorithm var hashobj = new CObjectId(); hashobj.InitializeFromAlgorithmName(ObjectIdGroupId.XCN_CRYPT_HASH_ALG_OID_GROUP_ID, ObjectIdPublicKeyFlags.XCN_CRYPT_OID_INFO_PUBKEY_ANY, AlgorithmFlags.AlgorithmFlagsNone, "SHA512"); // add extended key usage if you want - look at MSDN for a list of possible OIDs var oid = new CObjectId(); oid.InitializeFromValue("1.3.6.1.5.5.7.3.1"); // SSL server var oidlist = new CObjectIds(); oidlist.Add(oid); var eku = new CX509ExtensionEnhancedKeyUsage(); eku.InitializeEncode(oidlist); // Create the self signing request var cert = new CX509CertificateRequestCertificate(); cert.InitializeFromPrivateKey(X509CertificateEnrollmentContext.ContextMachine, privateKey, ""); cert.Subject = dn; cert.Issuer = dn; // the issuer and the subject are the same cert.NotBefore = DateTime.Now; // this cert expires immediately. Change to whatever makes sense for you cert.NotAfter = DateTime.Now.Add(expiresIn); cert.X509Extensions.Add((CX509Extension)eku); // add the EKU cert.HashAlgorithm = hashobj; // Specify the hashing algorithm cert.Encode(); // encode the certificate // Do the final enrollment process var enroll = new CX509Enrollment(); enroll.InitializeFromRequest(cert); // load the certificate enroll.CertificateFriendlyName = subjectName; // Optional: add a friendly name string csr = enroll.CreateRequest(); // Output the request in base64 // and install it back as the response enroll.InstallResponse(InstallResponseRestrictionFlags.AllowUntrustedCertificate, csr, EncodingType.XCN_CRYPT_STRING_BASE64, ""); // no password // output a base64 encoded PKCS#12 so we can import it back to the .Net security classes var base64encoded = enroll.CreatePFX("", // no password, this is for internal consumption PFXExportOptions.PFXExportChainWithRoot); // instantiate the target class with the PKCS#12 data (and the empty password) return new System.Security.Cryptography.X509Certificates.X509Certificate2( System.Convert.FromBase64String(base64encoded), "", // mark the private key as exportable (this is usually what you want to do) System.Security.Cryptography.X509Certificates.X509KeyStorageFlags.Exportable ); }
I call this code from:
private static void SetUpWebApi() { try { Trace.WriteLine("Setting up web service on " + appsettings.ApiUrl); var certSubjectName = "TestCert"; var expiresIn = TimeSpan.FromDays(7); var cert = Cert.RegisterCertificate.GenerateCert(certSubjectName, expiresIn); Console.WriteLine("Generated certificate, {0}Thumbprint: {1}{0}", Environment.NewLine, cert.Thumbprint); Cert.RegisterCertificate.RegisterSslOnPort(9822, cert.Thumbprint); Console.WriteLine($"Registerd SSL on port: {9822}"); string url = appsettings.ApiUrl.Replace("http", "https"); WebApp.Start<StartUp>(url); Trace.WriteLine($"Web service started at: {DateTime.UtcNow:D} at Url: {url}"); } catch (Exception ex) { Trace.WriteLine(ex.Message); } }
When i first start up my app on port 9822 and load in the following URL https://localhost:9822/api/system/connecttest I get the following
On image 3 it states the SSL cert is invalid, but on the last image it states the cert is ok.
Any ideas as to what I am doing wrong here?
Regards,
Loftty
Friday, February 15, 2019 12:36 PM
All replies
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The cert is valid as far as certs go, but it doesn't chain to a trusted root CA.
This posting is provided "AS IS" with no warranties, and confers no rights.
Friday, March 22, 2019 4:57 PM -
Hi,
sorry for the late response, how do I how do I chain to a trusted root CA?
Regards,
Loftty
Wednesday, February 26, 2020 11:49 AM