Authentication, Authorization & HTTPS
Authentication verifies the identity of users or systems, ensuring they are who they claim to be, typically through passwords or biometrics. Authorization determines what authenticated users are permitted to access or perform within a system, enforcing permissions and roles. HTTPS (Hypertext Transfer Protocol Secure) is a secure communication protocol that encrypts data transmitted between clients and servers, protecting sensitive information from interception and ensuring data integrity during online interactions.
Authentication, Authorization & HTTPS
Authentication verifies the identity of users or systems, ensuring they are who they claim to be, typically through passwords or biometrics. Authorization determines what authenticated users are permitted to access or perform within a system, enforcing permissions and roles. HTTPS (Hypertext Transfer Protocol Secure) is a secure communication protocol that encrypts data transmitted between clients and servers, protecting sensitive information from interception and ensuring data integrity during online interactions.
💡 Key Takeaways
- Differentiate authentication and authorization and how they work together to secure systems.
- Identify and evaluate common authentication methods (passwords, biometrics, MFA) and their trade-offs.
- Explain how HTTPS protects data in transit using TLS/SSL and the importance of valid certificates.
- Understand basic access control models (RBAC, ABAC) and how permissions are granted to authenticated users.
❓ Frequently Asked Questions
What is authentication and why is it important?
Authentication verifies a user’s or system’s identity, proving they are who they claim to be. Common methods include passwords, biometrics, and tokens, and it’s the first step before accessing resources.
How does authorization differ from authentication?
Authentication confirms identity. Authorization determines what an authenticated user is allowed to do or access, based on permissions or roles.
What is HTTPS and what protections does it provide?
HTTPS is HTTP over TLS/SSL. It encrypts data in transit, authenticates the server, and protects against eavesdropping, tampering, and impersonation.
What happens during the TLS handshake in HTTPS?
The client and server negotiate security parameters, the server presents a certificate for verification, they establish a shared session key, and then all communication is encrypted.