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educationJun 27, 202619:34pending
Course 37 - Building Web Apps with Ruby On Rails | Episode 14: From Basic HTTP to JWT Authentication
About this episode
In this lesson, you’ll learn about: securing APIs in Rails, authentication strategies, and building a stateless authorization system1. Why API Security MattersUsing Ruby on Rails APIs:🔹 Problem:
An unsecured API is essentially a “wide-open backend”2. Foundation of API Design🔹 Core features:
Security must be designed alongside API structure—not added later3. Basic HTTP Authentication (Intro Level)🔹 Rails method:http_basic_authenticate_with name: "admin", password: "secret" 🔹 How it works:
Good for demos ❌
Not safe for production ❌4. Token-Based Authentication with JWTUsing JSON Web Token:🔹 Structure:
JWT is the industry standard for modern APIs5. Why JWT Is More Secure🔹 Advantages:
Security comes from signature verification, not secrecy6. Implementing JWT in Rails🔹 Tool:
The server is the only entity that can generate valid tokens7. Authentication Service🔹 Responsibilities:
Authentication = verifying identity8. Authorization Layer🔹 Implementation:
Authorization = controlling access9. Request Lifecycle with JWT🔹 Flow:
Every request is independently verified (stateless system)10. From Open API to Secure System🔹 Before:
Security transforms your API from public → protectedKey Takeaways
👉 A scalable API architecture
👉 A secure backend for mobile/web appsMental ModelUser logs in → server issues token → client stores token → sends with each request → server verifies → grants/denies access
You can listen and download our episodes for free on more than 10 different platforms:
https://linktr.ee/cybercode_academy
- APIs are publicly exposed endpoints
- Without protection → anyone can access or manipulate data
- Ensure only authorized users can interact with resources
An unsecured API is essentially a “wide-open backend”2. Foundation of API Design🔹 Core features:
- Multiple response formats (JSON)
- Pagination
- API versioning
Security must be designed alongside API structure—not added later3. Basic HTTP Authentication (Intro Level)🔹 Rails method:http_basic_authenticate_with name: "admin", password: "secret" 🔹 How it works:
- Sends username/password with every request
- Credentials sent repeatedly
- Often stored or cached
- Vulnerable if not encrypted
Good for demos ❌
Not safe for production ❌4. Token-Based Authentication with JWTUsing JSON Web Token:🔹 Structure:
- Header
- Payload
- Signature
- Stateless (no server session needed)
- Secure (signed token)
- Scalable
JWT is the industry standard for modern APIs5. Why JWT Is More Secure🔹 Advantages:
- No repeated credentials
- Token can expire
- Cannot be modified without secret key
- Immune to CSRF (no cookies required)
Security comes from signature verification, not secrecy6. Implementing JWT in Rails🔹 Tool:
- JWT Ruby Gem
The server is the only entity that can generate valid tokens7. Authentication Service🔹 Responsibilities:
- Handle signup
- Handle login
- Generate token
- User logs in
- Server validates credentials
- Server returns JWT
Authentication = verifying identity8. Authorization Layer🔹 Implementation:
- Add before_action in controller
- Extract token from headers
- Decode token
- Identify current user
Authorization = controlling access9. Request Lifecycle with JWT🔹 Flow:
- Client sends request with token
- Server validates token
- Access granted or denied
Every request is independently verified (stateless system)10. From Open API to Secure System🔹 Before:
- No identity check
- Full data exposure
- Token required
- User-specific access control
Security transforms your API from public → protectedKey Takeaways
- Basic auth is simple but insecure
- JWT provides stateless, scalable security
- Separate authentication and authorization logic
- Validate every request using tokens
👉 A scalable API architecture
👉 A secure backend for mobile/web appsMental ModelUser logs in → server issues token → client stores token → sends with each request → server verifies → grants/denies access
You can listen and download our episodes for free on more than 10 different platforms:
https://linktr.ee/cybercode_academy
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