Fernet key must be 32 url-safe base64-encoded bytes

[liygit]

I want to browse the store but get the error that I do not hive an API key.so I create an secret key in my account and then copy the key to API KEY,but it still get error:There was an error saving the API Key, please try again.
Fernet key must be 32 url-safe base64-encoded bytes.

[dosubot[bot]]

Hey @liygit! Great to see you around here again. Hope you've been doing well. 😊

It seems like you're encountering an error related to the SECRET_KEY used for Fernet encryption in the Langflow store. The error message "Fernet key must be 32 url-safe base64-encoded bytes" indicates that the SECRET_KEY you're using might not be correctly formatted. It needs to be 32 bytes in length and URL-safe base64-encoded.

If you're not sure whether your SECRET_KEY meets these criteria, you can generate a new one using the following Python code snippet:

from cryptography.fernet import Fernet
new_key = Fernet.generate_key()
print(new_key.decode())

This will print a new key that is URL-safe base64-encoded and 32 bytes in length. You can then use this key as your SECRET_KEY in your settings.

Please note that changing the SECRET_KEY will invalidate any data previously encrypted with the old key, so you should plan accordingly if you decide to replace the key.

In the Langflow codebase, the SECRET_KEY is used in several critical areas related to security and encryption, particularly in the context of handling API keys and JWT tokens. It's used for encoding and decoding JWT tokens, encrypting and decrypting API keys, and ensuring the overall security of the authentication and authorization processes.

The API key in the Langflow store is saved using cookies, specifically through the universal-cookie library. The process involves setting the API key in a cookie and updating the state within the AuthProvider component. The function involved in saving the API key is storeApiKey, which takes an apikey as an argument. This function uses the cookies.set method to save the API key in a cookie named "apikey_tkn_lflw" and then updates the apiKey state with the new value using setApiKey(apikey).

I hope this helps! If you have any further questions or need more clarification, please let me know.

For more details, you can refer to the following sources:

• src/backend/langflow/services/auth/utils.py
• src/frontend/src/contexts/authContext.tsx

-Dosu

Sources

• src/backend/langflow/services/auth/utils.py
• src/frontend/src/contexts/authContext.tsx

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[liygit]

I execute these code:
from cryptography.fernet import Fernet
new_key = Fernet.generate_key()
print(new_key.decode()).
And copy the result to my SECRET_KEY,It still not work.

[consulenzaitn]

I have the same problem, how can I resolve it?

[lvergergsk]

Just update your LANGFLOW_SECRET_KEY env var if you have set it.
Make sure it is a valid fernet key.
you can generate one from here: https://fernetkeygen.com/

You may need to remove the langflow persist folder and restart the langflow.
Remember to backup.

[kit1211]

I deployed a project on railway and I have replaced the new key from langflow store to LANGFLOW_SECRET_KEY but it doesn't work.

[shaiss]

Just update your LANGFLOW_SECRET_KEY env var if you have set it. Make sure it is a valid fernet key. you can generate one from here: https://fernetkeygen.com/

You may need to remove the langflow persist folder and restart the langflow. Remember to backup.

This fixed my issue, ty!

[syoung-gaia]

This is now broken in 1.1.3 & 1.1.4. I've tried replacing the Secret Key using key values generated from code, or generated from the url mentioned above. Please help!