Change some tests to be conditional on the availability of SCOSSL

src/libraries/Common/tests/System/Security/Cryptography/AlgorithmImplementations/ECDiffieHellman/ECDiffieHellmanFactory.cs

@@ -12,7 +12,7 @@ public interface IECDiffieHellmanProvider
 #endif
         bool IsCurveValid(Oid oid);
         bool ExplicitCurvesSupported { get; }
-        bool ExplicitCurvesSupportFailOnUseOnly => PlatformDetection.IsAzureLinux;
+        bool ExplicitCurvesSupportFailOnUseOnly => PlatformDetection.IsSymCryptOpenSsl;
         bool CanDeriveNewPublicKey { get; }
         bool SupportsRawDerivation { get; }
         bool SupportsSha3 { get; }

src/libraries/Common/tests/System/Security/Cryptography/AlgorithmImplementations/ECDsa/ECDsaFactory.cs

@@ -12,7 +12,7 @@ public interface IECDsaProvider
 #endif
         bool IsCurveValid(Oid oid);
         bool ExplicitCurvesSupported { get; }
-        bool ExplicitCurvesSupportFailOnUseOnly => PlatformDetection.IsAzureLinux;
+        bool ExplicitCurvesSupportFailOnUseOnly => PlatformDetection.IsSymCryptOpenSsl;
     }
 
     public static partial class ECDsaFactory

src/libraries/Common/tests/System/Security/Cryptography/AlgorithmImplementations/RSA/KeyGeneration.cs

@@ -8,13 +8,13 @@ namespace System.Security.Cryptography.Rsa.Tests
     [SkipOnPlatform(TestPlatforms.Browser, "Not supported on Browser")]
     public class KeyGeneration
     {
-        [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsNotAzureLinux))]
+        [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsNotSymCryptOpenSsl))]
         public static void GenerateMinKey()
         {
             GenerateKey(rsa => GetMin(rsa.LegalKeySizes));
         }
 
-        [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsNotAzureLinux))]
+        [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsNotSymCryptOpenSsl))]
         public static void GenerateSecondMinKey()
         {
             GenerateKey(rsa => GetSecondMin(rsa.LegalKeySizes));

src/libraries/Common/tests/TestUtilities/System/PlatformDetection.Unix.cs

@@ -34,7 +34,6 @@ public static partial class PlatformDetection
         public static bool IsNotMonoLinuxArm64 => !IsMonoLinuxArm64;
         public static bool IsQemuLinux => IsLinux && Environment.GetEnvironmentVariable("DOTNET_RUNNING_UNDER_QEMU") != null;
         public static bool IsNotQemuLinux => !IsQemuLinux;
-        public static bool IsNotAzureLinux => !IsAzureLinux;
 
         // OSX family
         public static bool IsApplePlatform => IsOSX || IsiOS || IstvOS || IsMacCatalyst;
@@ -57,6 +56,18 @@ public static partial class PlatformDetection
         public static bool IsOpenSsl3_4 => IsOpenSslVersionAtLeast(s_openssl3_4Version);
         public static bool IsOpenSsl3_5 => IsOpenSslVersionAtLeast(s_openssl3_5Version);
 
+        private static readonly Lazy<bool> s_IsSymCryptOpenSsl = new(() =>
+        {
+            return IsAzureLinux &&
+                (
+                    File.Exists("/usr/lib/ossl-modules/symcryptprovider.so") ||
+                    File.Exists("/usr/lib64/ossl-modules/symcryptprovider.so")
+                );
+        });
+
+        public static bool IsSymCryptOpenSsl => s_IsSymCryptOpenSsl.Value;
+        public static bool IsNotSymCryptOpenSsl => !IsSymCryptOpenSsl;
+
         /// <summary>
         /// If gnulibc is available, returns the release, such as "stable".
         /// Otherwise returns "glibc_not_found".

src/libraries/System.Security.Cryptography.OpenSsl/tests/EcDsaOpenSslProvider.cs

@@ -46,13 +46,7 @@ private static bool IsValueOrFriendlyNameValid(string friendlyNameOrValue)
             return false;
         }
 
-        public bool ExplicitCurvesSupported
-        {
-            get
-            {
-                return !PlatformDetection.IsAzureLinux;
-            }
-        }
+        public bool ExplicitCurvesSupported => PlatformDetection.IsNotSymCryptOpenSsl;
     }
 
     public partial class ECDsaFactory

src/libraries/System.Security.Cryptography/tests/DefaultECDiffieHellmanProvider.Unix.cs

@@ -25,7 +25,7 @@ public bool ExplicitCurvesSupported
         {
             get
             {
-                if (PlatformDetection.IsApplePlatform || PlatformDetection.IsAzureLinux)
+                if (PlatformDetection.IsApplePlatform || PlatformDetection.IsSymCryptOpenSsl)
                 {
                     return false;
                 }

src/libraries/System.Security.Cryptography/tests/DefaultECDsaProvider.Unix.cs

@@ -25,7 +25,7 @@ public bool ExplicitCurvesSupported
         {
             get
             {
-                if (PlatformDetection.IsApplePlatform || PlatformDetection.IsAzureLinux)
+                if (PlatformDetection.IsApplePlatform || PlatformDetection.IsSymCryptOpenSsl)
                 {
                     return false;
                 }

src/libraries/System.Security.Cryptography/tests/HKDFTests.cs

@@ -14,8 +14,8 @@ public abstract class HKDFTests
         protected abstract byte[] Expand(HashAlgorithmName hash, byte[] prk, int outputLength, byte[] info);
         protected abstract byte[] DeriveKey(HashAlgorithmName hash, byte[] ikm, int outputLength, byte[] salt, byte[] info);
 
-        internal static bool MD5Supported => !PlatformDetection.IsBrowser && !PlatformDetection.IsAzureLinux;
-        internal static bool EmptyKeysSupported => !PlatformDetection.IsAzureLinux;
+        internal static bool MD5Supported => !PlatformDetection.IsBrowser && !PlatformDetection.IsSymCryptOpenSsl;
+        internal static bool EmptyKeysSupported => !PlatformDetection.IsSymCryptOpenSsl;
 
         [Theory]
         [MemberData(nameof(GetHkdfTestCases))]

src/libraries/System.Security.Cryptography/tests/HmacMD5Tests.cs

@@ -14,7 +14,7 @@ public class HmacMD5Tests : Rfc2202HmacTests<HmacMD5Tests.Traits>
     {
         public sealed class Traits : IHmacTrait
         {
-            public static bool IsSupported => !PlatformDetection.IsAzureLinux && !PlatformDetection.IsBrowser;
+            public static bool IsSupported => !PlatformDetection.IsSymCryptOpenSsl && !PlatformDetection.IsBrowser;
             public static int HashSizeInBytes => HMACMD5.HashSizeInBytes;
         }
 

src/libraries/System.Security.Cryptography/tests/KmacTestDriver.cs

@@ -95,7 +95,7 @@ public abstract class KmacTestDriver<TKmacTrait, TKmac>
         public static bool IsSupported => TKmacTrait.IsSupported;
         public static bool IsNotSupported => !IsSupported;
         public static KeySizes? PlatformKeySizeRequirements { get; } =
-            PlatformDetection.IsOpenSslSupported && !PlatformDetection.IsAzureLinux ? new KeySizes(4, 512, 1) : null;
+            PlatformDetection.IsOpenSslSupported && !PlatformDetection.IsSymCryptOpenSsl ? new KeySizes(4, 512, 1) : null;
 
         public static int? PlatformMaxOutputSize { get; } = PlatformDetection.IsOpenSslSupported ? 0xFFFFFF / 8 : null;
         public static int? PlatformMaxCustomizationStringSize { get; } = PlatformDetection.IsOpenSslSupported ? 512 : null;