Android Integration - 3 party dynamic TA

[vamanea]

Hi Guys,

I our Android integration I found that having one OpenTEE instance for every application was not very convenient. One instance in the system is much more convenient. However the problem here is that to provide a proper SDK for 3rd party developers there is a need to allow the developer to dynamically load the TA he just built.
With this in mind I developed some patches that allow the developer to only embed the TA inside the APK and be able to load it through TEEC_OpenSession. The code looks something like this:

    session.ta_path = alloca(strlen(filename) + 1);
    memset(session.ta_path, 0, strlen(filename) + 1);
    strncpy(session.ta_path, filename, strlen(filename));

    TEE_Debug("Opening session to TA %s", session.ta_path);
    result = TEEC_OpenSession(&context, &session, &EXAMPLE_uuid,
        TEEC_LOGIN_PUBLIC, NULL, NULL, NULL);

    if(result != TEEC_SUCCESS) {
        TEE_Error("teec open session failed\n");
        goto cleanup;
    }

Where filename is a path from the JAVA side. This allowed us to have much simpler OpenTEE Android SDK and integration.

Now I was wondering if you are interested in pursuing this further to integrate said patches.

Regards,