In a 3rd stage, the proxy asks the API for C. The API checks if B has the legal rights to use C after which forwards C for the proxy.
a12n-server - A simple authentication procedure which only implements the relevant https://prestonltfi282601.total-blog.com/data-loss-prevention-confidential-computing-tee-confidential-computing-enclave-safe-ai-act-confidential-ai-data-security-data-confidentiality-an-overview-56035338