Azure 函数无法加载文件或程序集 'System.Security.Cryptography.Pkcs'

Question

我最近尝试在 C# .NET Core 3.1 Web 应用程序中解密和验证 PKCS#7 消息。 Here is how I did it.

我在 Web 应用程序项目中使用了 System.Security.Cryptography.Pkcs。但是在实施相同的包并尝试在 Azure 函数 中解密和验证之后，它 returns 异常

{"Could not load file or assembly 'System.Security.Cryptography.Pkcs, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.":"System.Security.Cryptography.Pkcs, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"}.

我尝试了几个堆栈溢出答案，但无法对其进行排序。

System.Security.Cryptography.X509Certificates 在 Azure 函数中运行良好，但 Pkcs 似乎有问题。

我能解决吗？

这是我的 .csproj：

<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netcoreapp3.1</TargetFramework>
<AzureFunctionsVersion>v3</AzureFunctionsVersion>
<UserSecretsId>695a883e-9b1a-4d55-98a9-0b47b683bbb2</UserSecretsId>
<Nullable>annotations</Nullable>
</PropertyGroup>
<ItemGroup>
    <PackageReference Include="Autofac" Version="6.1.0" />
    <PackageReference Include="Dapper" Version="2.0.78" />
    <PackageReference Include="Microsoft.ApplicationInsights.WorkerService" Version="2.15.0" />
    <PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.1.0" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.DurableTask" Version="2.4.2" />
    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="3.0.11" />
    <PackageReference Include="System.Collections" Version="4.3.0" />
    <PackageReference Include="System.Data.SqlClient" Version="4.8.2" />
    <PackageReference Include="System.Security.Cryptography.Pkcs" Version="6.0.0" />
</ItemGroup>
<ItemGroup>
<None Update="host.json">
  <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
</None>
<None Update="local.settings.json">
  <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
  <CopyToPublishDirectory>Never</CopyToPublishDirectory>
</None>
</ItemGroup>
</Project>

Answer 1

Mishra](https://whosebug.com/users/13378259/rocky-mishra)很高兴您的问题得到解决，并将您的建议作为答案发布，以帮助面临类似问题的其他社区成员。

下面的示例代码有助于解决问题。

public class FunctionsAssemblyResolver
{
    public static void RedirectAssembly()
    {
        var list = AppDomain.CurrentDomain.GetAssemblies().OrderByDescending(a => a.FullName).Select(a => a.FullName).ToList();
        AppDomain.CurrentDomain.AssemblyResolve += CurrentDomain_AssemblyResolve;
    }

    private static Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
    {
        var requestedAssembly = new AssemblyName(args.Name);
        Assembly assembly = null;
        AppDomain.CurrentDomain.AssemblyResolve -= CurrentDomain_AssemblyResolve;
        try
        {
            assembly = Assembly.Load(requestedAssembly.Name);
        }
        catch (Exception ex)
        {
        }
        AppDomain.CurrentDomain.AssemblyResolve += CurrentDomain_AssemblyResolve;
        return assembly;
    }

}

有关更多信息，请查看此。

Azure 函数无法加载文件或程序集 'System.Security.Cryptography.Pkcs'

Azure Function Could not load file or assembly 'System.Security.Cryptography.Pkcs'

c#

azure

.net-core

azure-functions

pkcs