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TypeError: public_key() missing 1 required positional argument: 'backend'

See original GitHub issue

pyjwt is used by djangorestframework_simplejwt but I’m running into this exception in this package.

Expected Result

No exception

Actual Result

File "/home/brady/.envs/storefront-dev/lib64/python3.9/site-packages/jwt/jwks_client.py", line 59, in get_signing_key_from_jwt
    return self.get_signing_key(header.get("kid"))
  File "/home/brady/.envs/storefront-dev/lib64/python3.9/site-packages/jwt/jwks_client.py", line 41, in get_signing_key
    signing_keys = self.get_signing_keys()
  File "/home/brady/.envs/storefront-dev/lib64/python3.9/site-packages/jwt/jwks_client.py", line 28, in get_signing_keys
    jwk_set = self.get_jwk_set()
  File "/home/brady/.envs/storefront-dev/lib64/python3.9/site-packages/jwt/jwks_client.py", line 25, in get_jwk_set
    return PyJWKSet.from_dict(data)
  File "/home/brady/.envs/storefront-dev/lib64/python3.9/site-packages/jwt/api_jwk.py", line 92, in from_dict
    return PyJWKSet(keys)
  File "/home/brady/.envs/storefront-dev/lib64/python3.9/site-packages/jwt/api_jwk.py", line 87, in __init__
    self.keys.append(PyJWK(key))
  File "/home/brady/.envs/storefront-dev/lib64/python3.9/site-packages/jwt/api_jwk.py", line 52, in __init__
    self.key = self.Algorithm.from_jwk(self._jwk_data)
  File "/home/brady/.envs/storefront-dev/lib64/python3.9/site-packages/jwt/algorithms.py", line 370, in from_jwk
    return numbers.public_key()
TypeError: public_key() missing 1 required positional argument: 'backend'

When looking at jwt/algorithms.py it’s obviously not providing the backend parameter.

System Information

$ python -m jwt.help

{
  "cryptography": {
    "version": "2.9.2"
  },
  "implementation": {
    "name": "CPython",
    "version": "3.9.6"
  },
  "platform": {
    "release": "5.13.9-200.brady.fc34.x86_64",
    "system": "Linux"
  },
  "pyjwt": {
    "version": "2.1.0"
  }
}

Issue Analytics

State:
Created 2 years ago
Comments:6

Top GitHub Comments

1reaction

bradydeancommented, Nov 28, 2022

fwiw I have cryptography==38.0.3 installed w/djangorestframework-simplejwt and I don’t have any issues. Poetry determined this version to install.

1reaction

bradydeancommented, Nov 28, 2022

It has been so long I can’t really remember. I’d assume you want cryptography>=3.4.0, that’s what is in setup.cfg now.

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