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Verify and decrypt 3rd party OIDC ID tokens to protect your fastapi (https://github.com/tiangolo/fastapi) endpoints.

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FastAPI OIDC

Test Documentation Status Package version


⚠️ See this issue for simple role-your-own example of checking OIDC tokens.

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}

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Verify and decrypt 3rd party OIDC ID tokens to protect your fastapi (https://github.com/tiangolo/fastapi) endpoints.

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