FastAPI OIDC
Verify and decrypt 3rd party OIDC ID tokens to protect your fastapi endpoints.
Documentation: ReadTheDocs
Source code: Github
Installation
pip install fastapi-oidc
Usage
Verify ID Tokens Issued by Third Party
This is great if you just want to use something like Okta or google to handle your auth. All you need to do is verify the token and then you can extract user ID info from it.
from fastapi import Depends
from fastapi import FastAPI
# Set up our OIDC
from fastapi_oidc import IDToken
from fastapi_oidc import get_auth
OIDC_config = {
"client_id": "0oa1e3pv9opbyq2Gm4x7",
# Audience can be omitted in which case the aud value defaults to client_id
"audience": "https://yourapi.url.com/api",
"base_authorization_server_uri": "https://dev-126594.okta.com",
"issuer": "dev-126594.okta.com",
"signature_cache_ttl": 3600,
}
authenticate_user: Callable = get_auth(**OIDC_config)
app = FastAPI()
@app.get("/protected")
def protected(id_token: IDToken = Depends(authenticate_user)):
return {"Hello": "World", "user_email": id_token.email}Using your own tokens
The IDToken class will accept any number of extra field but if you want to craft your own token class and validation that's accounted for too.
class CustomIDToken(fastapi_oidc.IDToken):
custom_field: str
custom_default: float = 3.14
authenticate_user: Callable = get_auth(**OIDC_config, token_type=CustomIDToken)
app = FastAPI()
@app.get("/protected")
def protected(id_token: CustomIDToken = Depends(authenticate_user)):
return {"Hello": "World", "user_email": id_token.custom_default}