C#•14mo ago

❔ Load Certificate from Azure Key Vault as memorystream

I have a code that works perfect when testing it local and set my certificates as paths. When uploading it on Azure it do not work to use the path. My guess is that I have to upload the certificates on Key Vault and call the certificates from there. I'm using .NET Core Web App In the Nugget from Swish you can enter the certificate as direct path or as a stream. Do anyone have a solution how to fix this?

var clientCertificate = new SwishApi.Models.ClientCertificate()
{
    CertificateFilePath = "Cert//Swish_Merchant_TestCertificate_1234679304.pfx",
    Password = "swish"
};

string certificatePath = Environment.CurrentDirectory + "\\Cert\\Swish_Merchant_TestSigningCertificate_1234679304.pfx";
var payoutClient = new SwishApi.PayoutClient(clientCertificate, "https://eofvqci6optquip.m.pipedream.net", "1234", "1234679304", true, SwishApi.Environment.Emulator);

string instructionUUID = Guid.NewGuid().ToString("N").ToUpper();

// Anropa MakePayoutRequest med formulärvärden.
var response = payoutClient.MakePayoutRequest(PayoutTo, Personnummer, Amount, Message, instructionUUID, "7d70445ec8ef4d1e3a713427e973d097", new SwishApi.Models.ClientCertificate() { CertificateFilePath = certificatePath, Password = "swish" });

var clientCertificate = new SwishApi.Models.ClientCertificate()
{
    CertificateFilePath = "Cert//Swish_Merchant_TestCertificate_1234679304.pfx",
    Password = "swish"
};

string certificatePath = Environment.CurrentDirectory + "\\Cert\\Swish_Merchant_TestSigningCertificate_1234679304.pfx";
var payoutClient = new SwishApi.PayoutClient(clientCertificate, "https://eofvqci6optquip.m.pipedream.net", "1234", "1234679304", true, SwishApi.Environment.Emulator);

string instructionUUID = Guid.NewGuid().ToString("N").ToUpper();

// Anropa MakePayoutRequest med formulärvärden.
var response = payoutClient.MakePayoutRequest(PayoutTo, Personnummer, Amount, Message, instructionUUID, "7d70445ec8ef4d1e3a713427e973d097", new SwishApi.Models.ClientCertificate() { CertificateFilePath = certificatePath, Password = "swish" });

Have a look at this files : https://github.com/RickardPettersson/swish-api-csharp/blob/master/SwishApi/Models/ClientCertificate.cs https://github.com/RickardPettersson/swish-api-csharp/blob/master/SwishApi/PayoutClient.cs https://github.com/RickardPettersson/swish-api-csharp/issues/23

38 Replies

Pobiega•14mo ago

Reading that issue, just set the UseMachineKeySet to true and pass a stream, and you're good to go?

tftvikingOP•14mo ago

The problem is that I dont know how to make the stream from Key Vault.

Pobiega•14mo ago

Oh, you went with keyvault after all? Okay https://learn.microsoft.com/en-us/dotnet/api/overview/azure/security.keyvault.certificates-readme?view=azure-dotnet specifically https://learn.microsoft.com/en-us/dotnet/api/azure.security.keyvault.certificates.certificateclient.downloadcertificateasync?view=azure-dotnet#azure-security-keyvault-certificates-certificateclient-downloadcertificateasync(azure-security-keyvault-certificates-downloadcertificateoptions-system-threading-cancellationtoken) weird that it doesnt accept certs in X509Certificate2 format natively thou. but you should be able to turn that into a cert

tftvikingOP•14mo ago

Yeah thats why I dont get it to work, but you think something like this?

 var certificateOptions = new DownloadCertificateOptions("your-certificate-name");
var response = await keyVaultClient.DownloadCertificateAsync(certificateOptions);
var certificate = response.Value.Certificate;

using (MemoryStream certificateStream = new MemoryStream(certificate.RawData))

 var certificateOptions = new DownloadCertificateOptions("your-certificate-name");
var response = await keyVaultClient.DownloadCertificateAsync(certificateOptions);
var certificate = response.Value.Certificate;

using (MemoryStream certificateStream = new MemoryStream(certificate.RawData))

Pobiega•14mo ago

worth a try. unfortunately the documentation for RawData doesnt indicate if it includes the private key or not

tftvikingOP•14mo ago

And then make it two streams? one for each cert?

Pobiega•14mo ago

yes remember that the streams cant be re-used either at least not without rewinding them first, but even then that might not be enough

tftvikingOP•14mo ago

Its only used once when you do the payout.

Pobiega•14mo ago

okay, then thats less of an issue

tftvikingOP•14mo ago

its wrapped in a OnPost() So when you click the button it will run

Pobiega•14mo ago

please dont download the certs each time the button is clicked lol download them at startup and keep them in memory as X509s

tftvikingOP•14mo ago

            var certificateOptions1 = new DownloadCertificateOptions("certificate-name-1");
            var response1 = await keyVaultClient.DownloadCertificateAsync(certificateOptions1);
            var certificate1 = response1.Value.Certificate;

            var certificateOptions2 = new DownloadCertificateOptions("certificate-name-2");
            var response2 = await keyVaultClient.DownloadCertificateAsync(certificateOptions2);
            var certificate2 = response2.Value.Certificate;

            // Create MemoryStream instances for the certificates
            using var certificateStream1 = new MemoryStream(certificate1.RawData);
            using var certificateStream2 = new MemoryStream(certificate2.RawData);

            var certificateOptions1 = new DownloadCertificateOptions("certificate-name-1");
            var response1 = await keyVaultClient.DownloadCertificateAsync(certificateOptions1);
            var certificate1 = response1.Value.Certificate;

            var certificateOptions2 = new DownloadCertificateOptions("certificate-name-2");
            var response2 = await keyVaultClient.DownloadCertificateAsync(certificateOptions2);
            var certificate2 = response2.Value.Certificate;

            // Create MemoryStream instances for the certificates
            using var certificateStream1 = new MemoryStream(certificate1.RawData);
            using var certificateStream2 = new MemoryStream(certificate2.RawData);

I get error on these

Severity    Code    Description    Project    File    Line    Suppression State
Error    CS1061    'X509Certificate2' does not contain a definition for 'Certificate' and no accessible extension method 'Certificate' accepting a first argument of type 'X509Certificate2' could be found (are you missing a using directive or an assembly reference?)    SwishPayoutMaster    C:\Users\Alexander\source\repos\SwishPayoutMaster\SwishPayoutMaster\Pages\Payout.cshtml.cs    41    Active
Error    CS1061    'X509Certificate2' does not contain a definition for 'Certificate' and no accessible extension method 'Certificate' accepting a first argument of type 'X509Certificate2' could be found (are you missing a using directive or an assembly reference?)    SwishPayoutMaster    C:\Users\Alexander\source\repos\SwishPayoutMaster\SwishPayoutMaster\Pages\Payout.cshtml.cs    45    Active

Severity    Code    Description    Project    File    Line    Suppression State
Error    CS1061    'X509Certificate2' does not contain a definition for 'Certificate' and no accessible extension method 'Certificate' accepting a first argument of type 'X509Certificate2' could be found (are you missing a using directive or an assembly reference?)    SwishPayoutMaster    C:\Users\Alexander\source\repos\SwishPayoutMaster\SwishPayoutMaster\Pages\Payout.cshtml.cs    41    Active
Error    CS1061    'X509Certificate2' does not contain a definition for 'Certificate' and no accessible extension method 'Certificate' accepting a first argument of type 'X509Certificate2' could be found (are you missing a using directive or an assembly reference?)    SwishPayoutMaster    C:\Users\Alexander\source\repos\SwishPayoutMaster\SwishPayoutMaster\Pages\Payout.cshtml.cs    45    Active

I just want to make it work before i move the logic

Pobiega•14mo ago

well uh X509Certificate2 doesn't have a Certificate property. so.. dont try to access it? 😛

tftvikingOP•14mo ago

var certificateOptions1 = new DownloadCertificateOptions("TestCertificate");
var response1 = await keyVaultClient.DownloadCertificateAsync(certificateOptions1);
var certificate1 = response1.Value;

var certificateOptions2 = new DownloadCertificateOptions("TestSigningCertificate");
var response2 = await keyVaultClient.DownloadCertificateAsync(certificateOptions2);
var certificate2 = response2.Value;

using var certificateStream1 = new MemoryStream(certificate1.RawData);
using var certificateStream2 = new MemoryStream(certificate2.RawData);

// Omvandla MemoryStream till byte array
byte[] certificateData1 = certificateStream1.ToArray();
byte[] certificateData2 = certificateStream2.ToArray();

// Skapa X509Certificate2-objekt
var x509Certificate1 = new X509Certificate2(certificateData1);
var x509Certificate2 = new X509Certificate2(certificateData2);

var clientCertificate1 = new SwishApi.Models.ClientCertificate()
{
    CertificateAsStream = new MemoryStream(x509Certificate1.Export(X509ContentType.Pkcs12, "swish")),
    Password = "swish",
    UseMachineKeySet = true
};

var clientCertificate2 = new SwishApi.Models.ClientCertificate()
{
    CertificateAsStream = new MemoryStream(x509Certificate2.Export(X509ContentType.Pkcs12, "swish")),
    Password = "swish",
    UseMachineKeySet = true
};

var certificateOptions1 = new DownloadCertificateOptions("TestCertificate");
var response1 = await keyVaultClient.DownloadCertificateAsync(certificateOptions1);
var certificate1 = response1.Value;

var certificateOptions2 = new DownloadCertificateOptions("TestSigningCertificate");
var response2 = await keyVaultClient.DownloadCertificateAsync(certificateOptions2);
var certificate2 = response2.Value;

using var certificateStream1 = new MemoryStream(certificate1.RawData);
using var certificateStream2 = new MemoryStream(certificate2.RawData);

// Omvandla MemoryStream till byte array
byte[] certificateData1 = certificateStream1.ToArray();
byte[] certificateData2 = certificateStream2.ToArray();

// Skapa X509Certificate2-objekt
var x509Certificate1 = new X509Certificate2(certificateData1);
var x509Certificate2 = new X509Certificate2(certificateData2);

var clientCertificate1 = new SwishApi.Models.ClientCertificate()
{
    CertificateAsStream = new MemoryStream(x509Certificate1.Export(X509ContentType.Pkcs12, "swish")),
    Password = "swish",
    UseMachineKeySet = true
};

var clientCertificate2 = new SwishApi.Models.ClientCertificate()
{
    CertificateAsStream = new MemoryStream(x509Certificate2.Export(X509ContentType.Pkcs12, "swish")),
    Password = "swish",
    UseMachineKeySet = true
};

Stil not working, I can see in the breakpoints that I get the cert.

Pobiega•14mo ago

dude

// Skapa X509Certificate2-objekt
var x509Certificate1 = new X509Certificate2(certificateData1);
var x509Certificate2 = new X509Certificate2(certificateData2);

// Skapa X509Certificate2-objekt
var x509Certificate1 = new X509Certificate2(certificateData1);
var x509Certificate2 = new X509Certificate2(certificateData2);

wtf var certificate2 = response2.Value; is already an X509Certificate2

tftvikingOP•14mo ago

xD Anyway with or without that I get System.NullReferenceException HResult=0x80004003 Message=Object reference not set to an instance of an object. Source=SwishApi StackTrace: at SwishApi.Models.PayoutRequestEnvelope.buildSignature(ClientCertificate signingCertificate)

Pobiega•14mo ago

Not really going to dig through that project

tftvikingOP•14mo ago

Got it to work... First of all i loaded the public cert, not the secret.

Pobiega•14mo ago

Right, the private key

tftvikingOP•14mo ago

            // Ladda ner certifikaten som secrets
            var secretBundle1 = await keyVaultClient.GetSecretAsync("TestCertificate");
            var secretBundle2 = await keyVaultClient.GetSecretAsync("TestSigningCertificate");

            // Skapa MemoryStream-objekt från secrets
            using var certificateStream1 = new MemoryStream(Convert.FromBase64String(secretBundle1.Value.Value));
            using var certificateStream2 = new MemoryStream(Convert.FromBase64String(secretBundle2.Value.Value));

            var clientCertificate1 = new SwishApi.Models.ClientCertificate()
            {
                CertificateAsStream = certificateStream1
            };

            var clientCertificate2 = new SwishApi.Models.ClientCertificate()
            {
                CertificateAsStream = certificateStream2
            };

            // Ladda ner certifikaten som secrets
            var secretBundle1 = await keyVaultClient.GetSecretAsync("TestCertificate");
            var secretBundle2 = await keyVaultClient.GetSecretAsync("TestSigningCertificate");

            // Skapa MemoryStream-objekt från secrets
            using var certificateStream1 = new MemoryStream(Convert.FromBase64String(secretBundle1.Value.Value));
            using var certificateStream2 = new MemoryStream(Convert.FromBase64String(secretBundle2.Value.Value));

            var clientCertificate1 = new SwishApi.Models.ClientCertificate()
            {
                CertificateAsStream = certificateStream1
            };

            var clientCertificate2 = new SwishApi.Models.ClientCertificate()
            {
                CertificateAsStream = certificateStream2
            };

Pobiega•14mo ago

Okay thats slightly different. You base64 encoded your certs as secrets

tftvikingOP•14mo ago

Yes, i'm newbie. Im taking a 8 month course now as Developer

Pobiega•14mo ago

You should be able to get a private key from the certs uploaded as certs itself, but this workaround works

tftvikingOP•14mo ago

Okey, the example was with filepath but i got access denied so i thought better to use Key Vault since im planning building a Saas solution for this since Swish it self dosent offer the service public. Just API

Pobiega•14mo ago

.. you're making a Swish SAAS? Did you get approval from swish for this?

tftvikingOP•14mo ago

For companies to make payouts Are you Swedish?

Pobiega•14mo ago

Yes English only on server.

tftvikingOP•14mo ago

There are services that almost do what I want already, so can't see that it should be any problems. Take a look at utbetalningar.nu

Pobiega•14mo ago

Sure, but you'll need to contact swish and have this approved. You don't make a saas around another companies services without their approval they will just ban your cert and kill your app, so why not check with them first?

tftvikingOP•14mo ago

Its the customers certs. to use my service. When you request cert for Payout from your bank they ask if you have a solution to use the cert and for what purpose you want the cert.

Pobiega•14mo ago

Ah okay.

tftvikingOP•14mo ago

Or you generate the certs in the swish panel but to get access

Pobiega•14mo ago

I see

Denna tjänsten är inte i samarbete eller gjord av GetSwish AB.

alright, looks like utbetalningar.nu is in a similar position as yours

tftvikingOP•14mo ago

But this small service im building now is for a friend that buys and sell video games and other collectables like trading cards etc. When he buying from private individuals its easier to swish from the companys account rather than transfer money and swish from personal.

Pobiega•14mo ago

sure also less illegal from a tax perspective 😄

tftvikingOP•14mo ago

Yes : But next problem. When I running from local it works now getting from Key Vault and do the memorystream without enter password.

            var clientCertificate1 = new SwishApi.Models.ClientCertificate()
            {
                CertificateAsStream = certificateStream1
            };

            var clientCertificate1 = new SwishApi.Models.ClientCertificate()
            {
                CertificateAsStream = certificateStream1
            };

When uploaded on Azure with no password I get

System.Security.Cryptography.CryptographicException: The system cannot find the file specified. at System.Security.Cryptography.X509Certificates.CertificatePal.FilterPFXStore(ReadOnlySpan`1 rawData, SafePasswordHandle password, PfxCertStoreFlags pfxCertStoreFlags) at System.Security.Cryptography.X509Certificates.CertificatePal.FromBlobOrFile(ReadOnlySpan`1 rawData, String fileName, SafePasswordHandle password, X509KeyStorageFlags keyStorageFlags) at System.Security.Cryptography.X509Certificates.X509Certificate..ctor(Byte[] rawData, String password, X509KeyStorageFlags keyStorageFlags) at System.Security.Cryptography.X509Certificates.X509Certificate2..ctor(Byte[] rawData, String password) at SwishApi.Models.PayoutRequestEnvelope.buildSignature(ClientCertificate signingCertificate) at SwishApi.PayoutClient.MakePayoutRequest(String payoutTo, String personalNumber, Decimal amount, String message, String instructionUUID, String signingCertificateSerialNumber, ClientCertificate signingCertificate)

System.Security.Cryptography.CryptographicException: The system cannot find the file specified. at System.Security.Cryptography.X509Certificates.CertificatePal.FilterPFXStore(ReadOnlySpan`1 rawData, SafePasswordHandle password, PfxCertStoreFlags pfxCertStoreFlags) at System.Security.Cryptography.X509Certificates.CertificatePal.FromBlobOrFile(ReadOnlySpan`1 rawData, String fileName, SafePasswordHandle password, X509KeyStorageFlags keyStorageFlags) at System.Security.Cryptography.X509Certificates.X509Certificate..ctor(Byte[] rawData, String password, X509KeyStorageFlags keyStorageFlags) at System.Security.Cryptography.X509Certificates.X509Certificate2..ctor(Byte[] rawData, String password) at SwishApi.Models.PayoutRequestEnvelope.buildSignature(ClientCertificate signingCertificate) at SwishApi.PayoutClient.MakePayoutRequest(String payoutTo, String personalNumber, Decimal amount, String message, String instructionUUID, String signingCertificateSerialNumber, ClientCertificate signingCertificate)

And with password

            var clientCertificate1 = new SwishApi.Models.ClientCertificate()
            {
                CertificateAsStream = certificateStream1,
                Password = "swish"
            };

            var clientCertificate1 = new SwishApi.Models.ClientCertificate()
            {
                CertificateAsStream = certificateStream1,
                Password = "swish"
            };

I get this

System.Security.Cryptography.CryptographicException: The specified network password is not correct. at System.Security.Cryptography.X509Certificates.CertificatePal.FilterPFXStore(ReadOnlySpan`1 rawData, SafePasswordHandle password, PfxCertStoreFlags pfxCertStoreFlags) at System.Security.Cryptography.X509Certificates.CertificatePal.FromBlobOrFile(ReadOnlySpan`1 rawData, String fileName, SafePasswordHandle password, X509KeyStorageFlags keyStorageFlags) at System.Security.Cryptography.X509Certificates.X509Certificate..ctor(Byte[] rawData, String password, X509KeyStorageFlags keyStorageFlags) at System.Security.Cryptography.X509Certificates.X509Certificate2..ctor(Byte[] rawData, String password) at SwishApi.Models.PayoutRequestEnvelope.buildSignature(ClientCertificate signingCertificate) at SwishApi.PayoutClient.MakePayoutRequest(String payoutTo, String personalNumber, Decimal amount, String message, String instructionUUID, String signingCertificateSerialNumber, ClientCertificate signingCertificate)

System.Security.Cryptography.CryptographicException: The specified network password is not correct. at System.Security.Cryptography.X509Certificates.CertificatePal.FilterPFXStore(ReadOnlySpan`1 rawData, SafePasswordHandle password, PfxCertStoreFlags pfxCertStoreFlags) at System.Security.Cryptography.X509Certificates.CertificatePal.FromBlobOrFile(ReadOnlySpan`1 rawData, String fileName, SafePasswordHandle password, X509KeyStorageFlags keyStorageFlags) at System.Security.Cryptography.X509Certificates.X509Certificate..ctor(Byte[] rawData, String password, X509KeyStorageFlags keyStorageFlags) at System.Security.Cryptography.X509Certificates.X509Certificate2..ctor(Byte[] rawData, String password) at SwishApi.Models.PayoutRequestEnvelope.buildSignature(ClientCertificate signingCertificate) at SwishApi.PayoutClient.MakePayoutRequest(String payoutTo, String personalNumber, Decimal amount, String message, String instructionUUID, String signingCertificateSerialNumber, ClientCertificate signingCertificate)

The same way with password as I used with path and then it worked. I have set permission for my app to get secrets in Key Vault

Pobiega•14mo ago

¯\_(ツ)_/¯

Accord•14mo ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ Load Certificate from Azure Key Vault as memorystream