Modern Cryptography Fundamentals: Cryptography in Everyday Life

Engineering

Knowledge check on how cryptography protects everyday digital activities

10 XP
Reward
10
Questions
5–10 min
Time
Q1 Question 1 of 10

How does HTTPS (TLS) protect a web connection step by step?

Q2 Question 2 of 10

How does end-to-end encryption in messaging apps (Signal, WhatsApp) work?

Q3 Question 3 of 10

How does 'full disk encryption' (like FileVault on Mac or BitLocker on Windows) protect a laptop?

Q4 Question 4 of 10

How does cryptocurrency use cryptography to prevent double-spending?

Q5 Question 5 of 10

How does 'code signing' protect software from tampering?

Q6 Question 6 of 10

What is a 'security token' or hardware key (like a YubiKey)?

Q7 Question 7 of 10

What are 'secure enclaves' (like Apple's Secure Enclave, Intel SGX)?

Q8 Question 8 of 10

What is 'certificate pinning' and why do some apps use it?

Q9 Question 9 of 10

What is 'secure deletion' and why is simply deleting a file insufficient?

Q10 Question 10 of 10

Why should you always check the URL and certificate before entering sensitive information on a website?