up the blokcing tasks

src/__Libraries/StellaOps.Cryptography.DependencyInjection/CryptoServiceCollectionExtensions.cs

@@ -1,3 +1,4 @@
+using StellaOps.Cryptography.Plugin.SimRemote;
 using System;
 using System.Collections.Generic;
 using Microsoft.Extensions.Configuration;
@@ -86,6 +87,61 @@ public static class CryptoServiceCollectionExtensions
         services.TryAddEnumerable(ServiceDescriptor.Singleton<ICryptoProvider, EidasSoftCryptoProvider>());
         services.TryAddEnumerable(ServiceDescriptor.Singleton<ICryptoProvider, KcmvpHashOnlyProvider>());
 
+        // Unified simulation provider (sim-crypto-service)
+        services.AddOptions<SimRemoteProviderOptions>()
+            .Configure<IConfiguration>((opts, config) =>
+            {
+                config?.GetSection("StellaOps:Crypto:Sim").Bind(opts);
+            })
+            .PostConfigure(opts =>
+            {
+                var simUrl = Environment.GetEnvironmentVariable("STELLAOPS_CRYPTO_SIM_URL");
+                if (!string.IsNullOrWhiteSpace(simUrl))
+                {
+                    opts.BaseAddress = simUrl;
+                }
+            });
+
+        services.AddHttpClient<SimRemoteHttpClient>((sp, httpClient) =>
+        {
+            var opts = sp.GetService<IOptions<SimRemoteProviderOptions>>()?.Value;
+            if (opts is not null && !string.IsNullOrWhiteSpace(opts.BaseAddress))
+            {
+                httpClient.BaseAddress = new Uri(opts.BaseAddress);
+            }
+        });
+        services.TryAddEnumerable(ServiceDescriptor.Singleton<ICryptoProvider, SimRemoteProvider>());
+
+        services.PostConfigure<CryptoProviderRegistryOptions>(opts =>
+        {
+            var enableSimEnv = Environment.GetEnvironmentVariable("STELLAOPS_CRYPTO_ENABLE_SIM");
+            var enableSim = string.Equals(enableSimEnv, "1", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(enableSimEnv, "true", StringComparison.OrdinalIgnoreCase);
+
+            if (!enableSim)
+            {
+                return;
+            }
+
+            void AddIfMissing(IList<string> list, string provider)
+            {
+                if (!list.Contains(provider, StringComparer.OrdinalIgnoreCase))
+                {
+                    list.Add(provider);
+                }
+            }
+
+            if (!string.IsNullOrWhiteSpace(opts.ActiveProfile) &&
+                opts.Profiles.TryGetValue(opts.ActiveProfile, out var profile))
+            {
+                AddIfMissing(profile.PreferredProviders, "sim.crypto.remote");
+            }
+            else
+            {
+                AddIfMissing(opts.PreferredProviders, "sim.crypto.remote");
+            }
+        });
+
         services.TryAddSingleton<ICryptoProviderRegistry>(sp =>
         {
             var providers = sp.GetServices<ICryptoProvider>();

src/__Libraries/StellaOps.Cryptography.DependencyInjection/StellaOps.Cryptography.DependencyInjection.csproj

@@ -14,6 +14,7 @@
     <ProjectReference Include="..\StellaOps.Cryptography.Plugin.OpenSslGost\StellaOps.Cryptography.Plugin.OpenSslGost.csproj" />
     <ProjectReference Include="..\StellaOps.Cryptography.Plugin.SmSoft\StellaOps.Cryptography.Plugin.SmSoft.csproj" />
     <ProjectReference Include="..\StellaOps.Cryptography.Plugin.SmRemote\StellaOps.Cryptography.Plugin.SmRemote.csproj" />
+    <ProjectReference Include="..\StellaOps.Cryptography.Plugin.SimRemote\StellaOps.Cryptography.Plugin.SimRemote.csproj" />
     <ProjectReference Include="..\StellaOps.Cryptography.Plugin.PqSoft\StellaOps.Cryptography.Plugin.PqSoft.csproj" />
     <ProjectReference Include="..\StellaOps.Cryptography.Plugin.WineCsp\StellaOps.Cryptography.Plugin.WineCsp.csproj" />
     <PackageReference Include="Microsoft.Extensions.Http" Version="10.0.0" />