System.DllNotFoundException when running Xamarin.Android application

[sinyeekw]

Hello, I am trying to build an android app that uses the SEAL library. I am using Visual Studio 2019 on MacOS to build an Xamarin project which is recommended in the READMe.

I have installed the seal package in both the main project and the android project by clicking Project > Manage NuGET Packages > Microsoft.Research.SEALNet(4.0.0). When I build the project, no errors are thrown.

Here's my android build configuration:

However, when I run the app on an android stimulator (Nexus_5x_API_24, x86 processor), an error is thrown at the following line:

"EncryptionParameters parms = new EncryptionParameters(SchemeType.CKKS); "

Error thrown:
"System.DllNotFoundException: sealc assembly: type: member: (null)

Here is the project for reference: https://github.com/sinyeekw/homoenc

Any help is appreciated, thank you! :)

[kiromaru]

Hello,

I believe the problem is that the NuGet package does not support x86 or armeabi-v7a ABIs. The SEAL .Net assembly depends on a native binary that is only compiled in 64 bits, so it is only available for the x86_64 and arm64-v6a architectures.

Hope this helps.