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Author SHA1 Message Date
Patrick Cloke
8e9739449d
Add unstable /keys/claim endpoint which always returns fallback keys. (#15462)
It can be useful to always return the fallback key when attempting to
claim keys. This adds an unstable endpoint for `/keys/claim` which
always returns fallback keys in addition to one-time-keys.

The fallback key(s) are not marked as "used" unless there are no
corresponding OTKs.

This is currently defined in MSC3983 (although likely to be split out
to a separate MSC). The endpoint shape may change or be requested
differently (i.e. a keyword parameter on the current endpoint), but the
core logic should be reasonable.
2023-04-25 13:30:41 -04:00