The JWT generator is used to create secure tokens containing user information and permissions, widely applied in web application authentication and authorization systems.
HS256 is suitable for single application scenarios, using symmetric keys for simplicity and speed; RS256 is suitable for microservice architectures, using asymmetric keys for enhanced security.
The payload includes information such as user ID, role, and permissions. Avoid storing sensitive data like passwords, as the payload is only Base64 encoded, not encrypted.
It is recommended to set a short expiration time (e.g., 15-30 minutes) to enhance security, combined with a refresh token mechanism to maintain long-term login status.
Use strong keys (at least 32 characters), rotate keys regularly, and store them via environment variables or key management services in production environments.
Generating JWTs locally ensures that keys are not leaked externally, suitable for development testing and scenarios with high security requirements.