Is there a feature to share files only with the Teams app?

hello. I have a question about the Android Teams app.

We have an app that has encrypted image files.
Our customer only wants to share these images with the Teams app.

These image files cannot be used with Android's "Share" function.
Android's "Share" feature will call all apps that can view the image.
We don't want this for security reasons.

Is it possible for us to attach an image just by calling the Teams app?
I would like to know if there is an intent standard or API for calling Android Teams.