data_access_api.utils.internal_auth

Trust-internal service authentication for the data-access-api.

The data-access-api executes arbitrary SQL against the OMOP database via a service account. Without caller authentication, any container on the trust Docker network or any operator with SSM port-forward access can run the same queries as the service account. This module enforces a shared-secret check on the /cohort router: callers (trust-api, imaging-api, fl-client) send the plaintext TRUST_INTERNAL_SERVICE_KEY in a header, and data-access-api compares it to its own copy of the same key using constant-time comparison.

The key is held in plaintext by every trust-internal service (sender or receiver). See imaging_api/utils/internal_auth.py for the rationale — the same module-level docstring applies here.

Attributes

_settings

internal_key_header_scheme

Functions

authenticate_internal_service() → None)

Authenticate a trust-internal caller (trust-api, imaging-api, fl-client).

Module Contents

data_access_api.utils.internal_auth._settings
data_access_api.utils.internal_auth.internal_key_header_scheme
data_access_api.utils.internal_auth.authenticate_internal_service(api_key: str | None = Security(internal_key_header_scheme)) None

Authenticate a trust-internal caller (trust-api, imaging-api, fl-client).

Parameters:

api_key (str | None) – The plaintext key from the request header.

Raises:

HTTPException – 401 if the key is missing, unconfigured, or invalid.