Is it any way how I can extend Hydra to support completely custom grant types?
I know ROPC is not supported, but my question about completely custom grant types and the way how we can provide my custom implementation to hydra (similar to consent app for UI).
For example we have a use case when we want to do a token exchange with legacy systems and authenticate it. One of the legacy system uses opaque tokens and we trust them and want to do token exchange to Hydra token to be compatible. Ideally will be to have custom grant for /token endpoint which accepts the legacy token, do all checks and returns hydra token.