... so better sign this

Various helpers to pass data to untrusted environments and to get it back safe and sound. Data is cryptographically signed to ensure that a token has not been tampered with.

It's possible to customize how data is serialized. Data is compressed as needed. A timestamp can be added and verified automatically while loading a token.

Install and update using pip:

pip install -U itsdangerous

Here's how you could generate a token for transmitting a user's id and name between web requests.

from itsdangerous import URLSafeSerializer
auth_s = URLSafeSerializer("secret key", "auth")
token = auth_s.dumps({"id": 5, "name": "itsdangerous"})

print(token)
# eyJpZCI6NSwibmFtZSI6Iml0c2Rhbmdlcm91cyJ9.6YP6T0BaO67XP--9UzTrmurXSmg

data = auth_s.loads(token)
print(data["name"])
# itsdangerous

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• Website: https://palletsprojects.com/p/itsdangerous/
• Documentation: https://itsdangerous.palletsprojects.com/
• License: BSD
• Releases: https://pypi.org/project/itsdangerous/
• Code: https://github.com/pallets/itsdangerous
• Issue tracker: https://github.com/pallets/itsdangerous/issues
• Test status: https://travis-ci.org/pallets/itsdangerous
• Test coverage: https://codecov.io/gh/pallets/itsdangerous