This commit addresses several security vulnerabilities in the authentication
and authorization system:
1. JWT Encoding Panic Fix (Critical)
- Replace .unwrap() with proper error handling in JWT token generation
- Prevents server crashes from encoding failures
- Returns HTTP 500 with error logging instead of panicking
2. Rate Limiting for Login Endpoint (Critical)
- Add actix-governor dependency (v0.5)
- Configure rate limiter: 2 requests/sec with burst of 5
- Protects against brute-force authentication attacks
3. Strengthen Password Requirements
- Minimum length increased from 6 to 12 characters
- Require uppercase, lowercase, numeric, and special characters
- Add comprehensive validation with clear error messages
4. Fix Token Parsing Vulnerability
- Replace unsafe split().last().unwrap_or() pattern
- Use strip_prefix() for proper Bearer token validation
- Return InvalidToken error for malformed Authorization headers
5. Improve Authentication Logging
- Sanitize error messages to avoid leaking user existence
- Change from "User not found or incorrect password" to "Failed login attempt"
All changes tested and verified with existing test suite (65/65 tests passing).
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
