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:
I call this code from:
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, so assume the cert got installed fine
Any ideas as to what I am doing wrong here?
Regards,
Loftty
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:
C#:
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:
C#:
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, so assume the cert got installed fine
Any ideas as to what I am doing wrong here?
Regards,
Loftty
