HTTPS_Detailed_Presentation concept .pptx

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1. HTTPS (HyperText Transfer Protocol Secure) A Detailed Overview

2. Introduction to HTTPS HTTPS is the secure version of HTTP. It ensures encrypted communication between a web browser and a website. Uses SSL (Secure Socket Layer) or TLS (Transport Layer Security) for encryption. Essential for protecting sensitive data like passwords and payment details.

3. Why Do We Need HTTPS? Protects user data from eavesdropping. Prevents man-in-the-middle (MITM) attacks. Verifies website authenticity. Improves search engine ranking and user trust.

4. HTTP vs HTTPS HTTP: Data sent in plain text. Vulnerable to interception. HTTPS: Data encrypted using SSL/TLS. Provides authentication and integrity. Uses port 443 instead of port 80.

5. How HTTPS Works 1. Browser requests a secure connection to the web server. 2. Server sends its SSL/TLS certificate. 3. Browser verifies the certificate with trusted Certificate Authorities (CAs). 4. Both agree on encryption algorithms. 5. Secure encrypted communication begins.

6. Role of SSL/TLS • SSL (Secure Socket Layer) and TLS (Transport Layer Security) are cryptographic protocols. • Provide confidentiality, authentication, and data integrity. • TLS is the successor to SSL, offering stronger encryption and improved performance.

7. HTTPS Handshake Process • Step 1: Client Hello – Browser sends supported encryption algorithms. • Step 2: Server Hello – Server selects an algorithm and sends certificate. • Step 3: Certificate Verification – Browser validates authenticity. • Step 4: Key Exchange – Session key generated. • Step 5: Encrypted communication begins.

8. Digital Certificates • Issued by trusted Certificate Authorities (CAs). • Contain the website’s public key and identity details. • Ensure that users connect to the legitimate website. • Common CA examples: DigiCert, GlobalSign, Let's Encrypt.

9. Advantages of HTTPS • Ensures secure communication. • Protects user privacy. • Builds trust with users. • Required for online transactions and modern web features. • Boosts SEO rankings.

10. Limitations of HTTPS • Requires SSL/TLS certificates (cost/time to manage). • Slight performance overhead during encryption. • Misconfigured certificates can cause browser warnings. • Does not protect against all types of attacks (e.g., phishing).

11. Real-World Applications • Online banking and e-commerce websites. • Email services and social media platforms. • Government and healthcare portals. • Any site that handles sensitive user data.

12. Conclusion • HTTPS is essential for secure, trustworthy web communication. • Protects against data theft and forgery. • Implementing HTTPS is a standard practice for all modern websites.