Hello, everyone.
Been developing an OPC UA Client to integrate with the Coreflux MQTT broker and I’m currently stuck when trying to acess with a UserIdentityCertificate.

Authenticate with Anonymous or UserPass + SecurityPolicy and SecurityMessageMode works fine. So using the Application certificates is working fine.

I generated this .pfx certificate:
client_cert.pem client_cert.pfx client_csr.pem client_private_key.pem

and I’m passing to the .prosysopc/prosys-opc-ua-simulation-server/USERS_PKI/CA/certs the client_cert.pem

with this code:
if (this.Properties.AuthMode == AuthModeType.Certificate)
{
// Load .pfx file with password
if (!Path.GetExtension(this.Properties.UserCertificatePath).Equals(“.pfx”, StringComparison.OrdinalIgnoreCase))
throw new ArgumentException(“Only .pfx certificate files are supported.”);

//X509Certificate2 userCertificate = new X509Certificate2(this.Properties.UserCertificatePath, this.Properties.CertificatePassword);
X509Certificate2 userCertificate = new X509Certificate2(
this.Properties.UserCertificatePath,
this.Properties.CertificatePassword,
X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet
);
userIdentity = new UserIdentity(userCertificate);
Console.WriteLine($”—————————– {userCertificate.HasPrivateKey}”);
Console.WriteLine($”>>>>>>>>>>>>>>> Using certificate: {userCertificate.Thumbprint}”);
Console.WriteLine($”User Identity Type: {userIdentity.TokenType}”);

}

im always getting this so I believe everything is working fine in the code abovet:

—————————– True
>>>>>>>>>>>>>>> Using certificate: 185EC24E95206B9E3524ACC07A37CBED83339409
User Identity Type: Certificate

but then in the last part when i try to establish the session with the OPC UA server: this.Session = await Session.Create(config, configuredEndpoint, false, “OpcUaClientSession”, this.Properties.Timeout, userIdentity, null);
I get this error message: BadIdentityTokenRejected

I think the code is fine maybe I’m just passing the wrong file to the USERS_PKI/CA/certs. Let me know what your thoughts regarding my problem please.
Many thanks in advance.