HTTPS - HyperText Transfer Protocol Secure
Part of Protocols — GCSE Computer Science
This key facts covers HTTPS - HyperText Transfer Protocol Secure within Protocols for GCSE Computer Science. Revise Protocols in Networks for GCSE Computer Science with 15 exam-style questions and 18 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 4 of 10 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 4 of 10
Practice
15 questions
Recall
18 flashcards
HTTPS - HyperText Transfer Protocol Secure
What is HTTPS?
HTTP with encryption (SSL/TLS). The "S" stands for Secure. HTTPS encrypts all data transmitted between browser and server, protecting it from interception.
How HTTPS Works:
- Encryption layer: SSL/TLS encrypts HTTP traffic
- Padlock icon: Browser shows padlock in address bar for HTTPS sites
- Certificate: Server has digital certificate verifying its identity
- Encrypted data: Even if intercepted, data is unreadable without decryption key
- Port: Uses port 443 by default
HTTPS Advantages:
- Secure: Data encrypted - cannot be read if intercepted
- Privacy: Protects passwords, credit cards, personal information
- Authentication: Certificate verifies you're connecting to real website (not fake)
- Integrity: Detects if data is tampered with during transmission
- Trust: Users trust sites with padlock icon
- SEO benefit: Google ranks HTTPS sites higher
When HTTPS is Essential:
- Banking: Protect financial transactions and account details
- Shopping: Secure credit card information
- Email: Protect login credentials and message content
- Social media: Secure passwords and private messages
- Any login: Prevent password interception
HTTP vs HTTPS:
| Aspect | HTTP | HTTPS |
|---|---|---|
| Security | NOT secure (plain text) | Secure (encrypted) |
| Port | 80 | 443 |
| Padlock Icon | No | Yes |
| Certificate | Not required | Required (SSL/TLS) |
| Use Case | Public information only | Logins, payments, sensitive data |