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ietf-wg-ppm / draft-ietf-ppm-dap-taskprov

Define DAP extension for in-band task provisioning.
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Advise deployments to support a global HPKE config if in-band task provisioning is supported #11

Closed junyechen1996 closed 2 years ago

junyechen1996 commented 2 years ago

If a deployment supports in-band task provisioning, then clients should not query /hpke_config with a specified task_id. The reason is:

  1. Aggregators need the first client report for a particular TaskID, in order for the task to be configured.
  2. Clients need the HPKE config to submit reports. If task_id parameter is included when clients query /hpke_config endpoint, the Aggregator may not know that TaskID yet, because it has not received any report for that.

One way is to advise deployment to support a global HPKE config, and also advise clients to not pass task_id to /hpke_config endpoint. The other way is to create the HPKE config on the fly for unseen task ID in /hpke_config.

cjpatton commented 2 years ago

Yup 👍

cjpatton commented 2 years ago

@junyechen1996 we just merged #9 so this would be a good time for text

junyechen1996 commented 2 years ago

Addressed by https://github.com/wangshan/draft-wang-ppm-dap-taskprov/pull/21