👀 Views: 71 💬 Answers: 1 📅 Created: 2025-06-07

Django JWT security Python

I'm dealing with I'm performance testing and I'm trying to implement JWT authentication in my Django application using Django REST Framework (DRF) and the `djangorestframework-simplejwt` library. I set up my project to scenario JWT tokens, but when I try to authenticate using the token, I keep getting the behavior `Invalid signature`. Here's the setup I have in my `settings.py`: ```python REST_FRAMEWORK = { 'DEFAULT_AUTHENTICATION_CLASSES': ( 'rest_framework_simplejwt.authentication.JWTAuthentication', ), } SIMPLE_JWT = { 'ALGORITHM': 'HS256', 'SIGNING_KEY': SECRET_KEY, } ``` I've verified that my `SECRET_KEY` is being correctly set. In my login view, the token is generated like this: ```python from rest_framework_simplejwt.tokens import RefreshToken def get_tokens_for_user(user): refresh = RefreshToken.for_user(user) return { 'refresh': str(refresh), 'access': str(refresh.access_token), } ``` When I post to my login endpoint, I receive the token without any issues. However, when I try to access a protected route with the token, I receive the behavior. I’m adding the token to the `Authorization` header like this: ```http Authorization: Bearer <your_jwt_token> ``` I've tried regenerating the tokens and checking if there's any whitespace or special characters in the token, but nothing seems to fix the scenario. Is there something I'm missing in my configuration or usage that could lead to this `Invalid signature` behavior? I'm open to any suggestions. Is there a simpler solution I'm overlooking?