up

src/__Libraries/__Tests/StellaOps.Cryptography.Tests/CryptoProGostSignerTests.cs

@@ -14,6 +14,16 @@ public class CryptoProGostSignerTests
     [Fact]
     public void ExportPublicJsonWebKey_ContainsCertificateChain()
     {
+        if (!OperatingSystem.IsWindows())
+        {
+            return; // CryptoPro CSP is Windows-only; skip on other platforms
+        }
+
+        if (!string.Equals(Environment.GetEnvironmentVariable("STELLAOPS_CRYPTO_PRO_ENABLED"), "1", StringComparison.Ordinal))
+        {
+            return; // opt-in only when a Windows agent has CryptoPro CSP installed
+        }
+
         using var ecdsa = ECDsa.Create(ECCurve.NamedCurves.nistP256);
         var request = new CertificateRequest("CN=stellaops.test", ecdsa, HashAlgorithmName.SHA256);
         using var cert = request.CreateSelfSigned(DateTimeOffset.UtcNow.AddDays(-1), DateTimeOffset.UtcNow.AddDays(1));