def generate_jwt(self, ttl=43200, algo="RS256"):
"""Generates a JSON Web Token (https://jwt.io/) using network time.
:param int jwt_ttl: When the JWT token expires, defaults to 43200 minutes (or 12 hours).
:param str algo: Algorithm used to create a JSON Web Token.
Example usage of generating and setting a JSON-Web-Token:
..code-block:: python
jwt = CloudCore.generate_jwt()
print("Generated JWT: ", jwt)
"""
if self.logger:
self.logger.debug("Generating JWT...")
ntp = NTP.NTP(self._esp)
ntp.set_time()
claims = {
# The time that the token was issued at
"iat": time.time(),
# The time the token expires.
"exp": time.time() + ttl,
# The audience field should always be set to the GCP project id.
"aud": self._proj_id,
}
jwt = JWT.generate(claims, self._private_key, algo)
return jwt
# SPDX-FileCopyrightText: 2022 Scott Shawcroft for Adafruit Industries
# SPDX-License-Identifier: MIT
"""Print out time based on NTP."""
import time
import socketpool
import wifi
import adafruit_ntp
# Get wifi details and more from a secrets.py file
try:
from secrets import secrets
except ImportError:
print("WiFi secrets are kept in secrets.py, please add them there!")
raise
wifi.radio.connect(secrets["ssid"], secrets["password"])
pool = socketpool.SocketPool(wifi.radio)
ntp = adafruit_ntp.NTP(pool, tz_offset=0)
while True:
print(ntp.datetime)
time.sleep(1)
# SPDX-FileCopyrightText: 2022 Scott Shawcroft for Adafruit Industries
# SPDX-License-Identifier: MIT
"""Tests NTP with CPython socket"""
import socket
import time
import adafruit_ntp
# Don't use tz_offset kwarg with CPython because it will adjust automatically.
ntp = adafruit_ntp.NTP(socket)
while True:
print(ntp.datetime)
time.sleep(1)