main.py 文件源码

def secret_key():
    """ Get secret key from datastore.

        Read Secret Key from db. If one does not exist, create one
        and the event gets logged since this is an important security event
    """
    secret_check = ndb.gql("SELECT key_string FROM Secret")
    key = secret_check.get()
    if key:  # if key is present return it
        return key.key_string
    else:  # if not make one and return/store it
        new_key = binascii.b2a_hqx(os.urandom(64))  # 64-bits of ASCII
        k = Secret(key_string=new_key)
        k.put()
        logging.critical("A NEW SECRET KEY HAS BEEN CREATED FOR HMAC")
        return new_key