Run sgx_create_enclave() from dll

[nadiaivc]

Hello!
Is it possible to run sgx enclave from dll? I have got an .exe application (untrusted module ) that call sgx_create_enclave() and also can call functions from the enclave. But I want to put this untrusted module in different process as dll (so I want this structure: dll (untrusted module) runs dll (enclave)). But it isn't work now... The thread with my LoadLibrary frozes on sgx_create_enclave()

[JesusG_Intel]

Hello nadia111,

Please describe how you setup the Visual Studio solution for your three projects: the main untrusted executable app, the untrusted dll, and the enclave dll.

Provide:

Screenshots of project properties for C/C++ and Linker.

Screenshot of the solution tree with the projects expanded.

Sincerely,

Jesus G.

Intel Customer Support

[nadiaivc]

Hello,

Sure. "hello" project is a project with a printing string. In hello.exe I want to inject sgxConsoleApplication.dll (right side). I do injection of sgxConsoleApplication.dll to hello.exe with LoadLibrary.

hello project (the main untrusted executable app)

sgxConsoleApplication (the untrusted dll)

EnclaveTest (the enclave dll)

[JesusG_Intel]

Thank you for the comprehensive details, Nadia. I am investigating your issue and will respond when I have something useful for you.

Sincerely,

Jesus G.

Intel Customer Support

[nadiaivc]

Thank you! I will wait for your answer

[JesusG_Intel · Accepted solution]

Hello Nadia,

I was able to create an untrusted dll, that interfaces with the enclave, and linked the unstrusted dll with a regular console app and it all worked. I did not use LoadLibrary. Attached are the solution files for your reference. I used absolute paths in the Properties so you will have to modify them.

The Untrusted solution contains the Untrusted DLL project and the SGXSDK/SampleEnclave/Enclave project.

Make sure to copy your untrusted dll and enclave.signed.dll to the same location as hello.exe. Set the Debugging/Working Directory to $(OutDir).

I copied the contents from SampleEnclave/app.cpp to Untrusted/dllmain.cpp.

Good luck!

Sincerely,
Jesus G.
Intel Customer Support

[nadiaivc]

Hello!
I made edits to my project using your sample and it works (yes, it is a "Sucdddess"). I'm so happy! Thank you very much for your time and help!!

[JesusG_Intel]

I'm very glad you got it working, Nadia.

This thread has been marked as answered and Intel will no longer monitor this thread. If you want a response from Intel in a follow-up question, please open a new thread.