.Net: Microsoft.SemanticKernel.Plugins.Memory.dll is delay-signed or test-signed assembly

[ksjoberg]

Describe the bug
The assembly Microsoft.SemanticKernel.Plugins.Memory.dll fails to load on a Windows Server machine:

Could not load file or assembly 'Microsoft.SemanticKernel.Plugins.Memory' or one of its dependencies. 
Strong name signature could not be verified. The assembly may have been tampered with, or it was delay
signed but not fully signed with the correct private key. (Exception from HRESULT: 0x80131045) 

Checking the assembly with sn.exe -v yields:

sn -v Microsoft.SemanticKernel.Plugins.Memory.dll

Microsoft (R) .NET Framework Strong Name Utility  Version 4.0.30319.0
Copyright (c) Microsoft Corporation.  All rights reserved.

Microsoft.SemanticKernel.Plugins.Memory.dll is a delay-signed or test-signed assembly

To Reproduce
Steps to reproduce the behavior:

1. Verify that verification skipping is disabled, i.e. sn.exe -Vl for your architecture (x86/x64) shows

sn.exe -Vl

Microsoft (R) .NET Framework Strong Name Utility  Version 4.0.30319.0
Copyright (c) Microsoft Corporation.  All rights reserved.

No verification entries registered

2. Load the assembly into a runtime that verifies strongname signatures.

Expected behavior
The assembly should load without issues.

Platform

• OS: Windows
• Language: C#
• Source: beta1, beta4

[RogerBarreto]

The Microsoft assemblies are signed only in the release packages.

To get a strong name, you need to follow this steps:

1. Download the nuget package Microsoft.SemanticKernel.Plugins.Memory 1.0.0-beta6

2. Rename microsoft.semantickernel.plugins.memory.1.0.0-beta6.nupkg to microsoft.semantickernel.plugins.memory.1.0.0-beta6.zip
3. Extract it
4. Get the assembly file Microsoft.SemanticKernel.Plugins.Memory.dll from the lib/netstandard2.0 folder
5. Check for the strong name like you did.

F:\check-assembly-strongname> sn -v Microsoft.SemanticKernel.Plugins.Memory.dll

Microsoft (R) .NET Framework Strong Name Utility  Version 4.0.30319.0
Copyright (c) Microsoft Corporation.  All rights reserved.

Assembly 'Microsoft.SemanticKernel.Plugins.Memory.dll' is valid

[RogerBarreto]

Closing this issue, for now.

Thanks for the feedback.

[Wopienkaatwork]

Hi @RogerBarreto I've just tried that and I still get:
C:\Users\WernerWopienka\Downloads\microsoft.semantickernel.plugins.memory.1.0.0-beta6\lib\netstandard2.0>sn -v Microsoft.SemanticKernel.Plugins.Memory.dll

Microsoft (R) .NET Framework Strong Name Utility Version 4.0.30319.0
Copyright (c) Microsoft Corporation. All rights reserved.

Microsoft.SemanticKernel.Plugins.Memory.dll is a delay-signed or test-signed assembly

[RogerBarreto]

@Wopienkaatwork , please what was the Nuget Repository you attempted to download from ?

Ensure you got it from here: Microsoft.SemanticKernel.Plugins.Memory 1.0.0-beta6

[Wopienkaatwork]

@RogerBarreto , yes I took the link you provided, downloaded the nuget file, renamed it to zip, extracted it and used the vs2022 cmd prompt:
C:\Users\WernerWopienka\Downloads\microsoft.semantickernel.plugins.memory.1.0.0-beta6\lib\netstandard2.0>
sn -v Microsoft.SemanticKernel.Plugins.Memory.dll

Microsoft (R) .NET Framework Strong Name Utility Version 4.0.30319.0
Copyright (c) Microsoft Corporation. All rights reserved.

Microsoft.SemanticKernel.Plugins.Memory.dll is a delay-signed or test-signed assembly
I also tried it via the nuget explorer with the same result.

[ksjoberg]

I second this, just downloaded beta6 and tested:

> sn -v Microsoft.SemanticKernel.Plugins.Memory.dll

Microsoft (R) .NET Framework Strong Name Utility  Version 4.0.30319.0
Copyright (c) Microsoft Corporation.  All rights reserved.

Microsoft.SemanticKernel.Plugins.Memory.dll is a delay-signed or test-signed assembly

$ sha256sum Microsoft.SemanticKernel.Plugins.Memory.dll
76a701d0aced588b01eeaaf9ca4a187766911d0d0b79e3102fb9d68c7d3417ee  Microsoft.SemanticKernel.Plugins.Memory.dll

[RogerBarreto]

Ok, will look deeper into this. Thanks for all updates.