Web pages

Question 1

What are HHTP web pages?

Answer 1

Normal webpages that are not encrypted use HHTP - anyone can read them.

Question 2

What is HHTPS?

Answer 2

An encryption standard used for secure websites.
Uses a padlock symbol to show that it is secure.
Appears in the URL, is secured by an SSL certificate (name of issuing authority, coporate name of website).
Uses SSL or TLS to encrypt and decrypt pages and information used by web users.

Question 3

What does SSL stand for?

Answer 3

Secure Socket Layer

Question 4

What is SSL?

Answer 4

An internet security protocol used by web browsers.
Keep the internet connection secure so any sensitive data sent between 2 systems is safe (prevented from reading/ modifying).
Uses public key encryption.

Question 5

What does TLS stand for?

Answer 5

Transport Layer Security

Question 6

What is TLS?

Answer 6

Updated version of SSL (more secure)

Question 7

How does HHTP/HHTPS (secure padlock) work ?

Answer 7

• Browser requests a secure page it adds S onto HHTP.
• Browser sends a public key + a certificate*.
  *Checks certificate to check its valid, from a trusted party.
• Browser uses public key to encrypt and a randomly selected symmetric key.
• Once the secure session starts, one computer creates a symmetric key + sends it to the other using public key encryption.
• Once the session is finished each computer discards the symmetric key used. Any new sessions, a new key will be created.