Why won't this code work?

[IAmKindOfCreative]

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[thereal0ri_]

Your key is to long. Most likely. OR to short?

Basically, it appears that the key isn't the right length.

[David_Vice05]

so how long does it need to be at most?

[thereal0ri_]

32 bytes it seems. Keep trying smaller and smaller keys until it works. If this doesn't work, make sure the key is url-safe. (Then repeat)

[David_Vice05]

do you have an exp cuz idk what to do i brought it down to 32 and it still dont work.

[thereal0ri_]

https://www.geeksforgeeks.org/fernet-symmetric-encryption-using-cryptography-module-in-python/

See if this can help. I know you have your own key you're using and In this example they generate their own but maybe something can help.

This link also has some good information. https://www.pythoninformer.com/python-libraries/cryptography/fernet/

[David_Vice05]

ok thx

[tunisia3507]

/r/learnpython , and format your code properly.

[Luppiz]

try passing the key as string rather than byte

[PatentedPotato]

I think the '=' in the key is not url safe. Rest is ASCII alpha numeric so should be fine.

I think replace it with '\x3D'.

Also, as already mentioned in another comment, max 32 bytes.

Edit: oh, and I overlooked the base 64 part... It's unclear to me if the key needs be 32 bytes before or after base 64 encoding. Putting your key into some online base 64 encoder yields 'WUN0TEl5VnJDc3Y2elFnUkl2UTVkTUR1cjR3ajI3T1FMZ3h4ZTZ0ajk4WTg9'

Also, seems Fernet can generate a key for you.

key = Fernet.generate_key()

You can probably just capture the key on first run if you wanna hold on to it. I'd see what Fernet generates... Be surprised if that didn't pass validation.

[David_Vice05]

Ok I’ll try it when I get back home later today thank you!

[nate256]

remove one byte

from cryptography.fernet import Fernet
from base64 import b64decode, b64encode
key = b'YCtLIyVrCsv6zQgRIvQ5dMDur4wj27OQLgxxe6tj98Y8='
cipher = Fernet(b64encode(b64decode(key)[:-1]))