feat(gateway): generate self-signed ECDSA cert with SANs

2026-06-01 07:18:39 -04:00
parent 6f9188bc8d
commit b8a6695612
3 changed files with 112 additions and 0 deletions
@@ -0,0 +1,40 @@
+using System.Security.Cryptography.X509Certificates;
+using Microsoft.Extensions.Logging.Abstractions;
+using Microsoft.Extensions.Time.Testing;
+using ZB.MOM.WW.MxGateway.Server.Configuration;
+using ZB.MOM.WW.MxGateway.Server.Security.Tls;
+using Xunit;
+
+namespace ZB.MOM.WW.MxGateway.Tests.Security.Tls;
+
+public sealed class SelfSignedCertificateProviderTests
+{
+    private static SelfSignedCertificateProvider CreateProvider(TlsOptions options, FakeTimeProvider time)
+        => new(options, NullLogger<SelfSignedCertificateProvider>.Instance, time);
+
+    [Fact]
+    public void GenerateCertificate_HasExpectedSansEkuAndValidity()
+    {
+        FakeTimeProvider time = new(new DateTimeOffset(2026, 1, 1, 0, 0, 0, TimeSpan.Zero));
+        TlsOptions options = new() { ValidityYears = 7, AdditionalDnsNames = ["gw.internal"] };
+
+        using X509Certificate2 cert = CreateProvider(options, time).GenerateCertificate();
+
+        Assert.Equal(time.GetUtcNow().AddYears(7).UtcDateTime.Date, cert.NotAfter.ToUniversalTime().Date);
+        Assert.True(cert.NotBefore.ToUniversalTime() < time.GetUtcNow().UtcDateTime);
+        Assert.True(cert.HasPrivateKey);
+
+        string sans = ReadSubjectAltNames(cert);
+        Assert.Contains("localhost", sans);
+        Assert.Contains("gw.internal", sans);
+
+        X509EnhancedKeyUsageExtension eku = cert.Extensions.OfType<X509EnhancedKeyUsageExtension>().Single();
+        Assert.Contains(eku.EnhancedKeyUsages.Cast<System.Security.Cryptography.Oid>(),
+            o => o.Value == "1.3.6.1.5.5.7.3.1"); // serverAuth
+    }
+
+    private static string ReadSubjectAltNames(X509Certificate2 cert)
+        => cert.Extensions
+            .First(e => e.Oid?.Value == "2.5.29.17")
+            .Format(false);
+}
@@ -7,6 +7,7 @@

  <ItemGroup>
    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="Microsoft.Extensions.TimeProvider.Testing" Version="10.0.0" />
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
    <PackageReference Include="xunit" Version="2.9.3" />
    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />