def certs()

in authenticating-users/main.py [0:0]


def certs():
    """Returns a dictionary of current Google public key certificates for
    validating Google-signed JWTs. Since these change rarely, the result
    is cached on first request for faster subsequent responses.
    """
    import requests

    global CERTS
    if CERTS is None:
        response = requests.get(
            'https://www.gstatic.com/iap/verify/public_key'
        )
        CERTS = response.json()
    return CERTS