Does anybody know wether authlib python library support the Resource Owner Password Credentials Grant flow for Flask OIDC Provider?
In the documentation only appear Code, Implicit and Hybrid Flow.
https://docs.authlib.org/en/latest/flask/2/openid-connect.html
If so, please could you tell me how do you implement the functionality?
There is no Password Credentials Grant in OpenID Connect. Password Credentials Grant is a normal OAuth 2.0 grant type, please check https://docs.authlib.org/en/latest/flask/2/grants.html
Here is the documentation of OpenID Connect, you can find it has only code, implicit and hybrid grants: https://openid.net/specs/openid-connect-core-1_0.html