Find your level

Four quick questions. Pick the answer closest to you; your level appears below when all four are answered. Nothing you choose is saved or sent anywhere.

1. Which describes you best?

I'm at school, and new to this I'm a student or self-learner and know some algebra I work with computers, security or research

2. What is a public key?

No idea yet Something like an open padlock: anyone can lock a message with it I can explain how RSA or elliptic-curve keys work

3. What does a hash function do?

Not sure Makes a short fingerprint of some data I know what a collision is and why SHA-1 was retired

4. Have you used ssh-keygen or openssl, or set up HTTPS?

Never Once or twice, by following a guide Often; I choose the settings myself

Start again

This is a rough guide, not a test. Every page shows its level under the title, so you can always move up or down.