Crypto 101
A free introductory course on cryptography covering block ciphers, hashing, key exchange and common pitfalls, aimed at readers who want to understand it properly.
No account needed · sign in to keep your taste everywhere
More like this
Pages that share Crypto 101's themes. Or browse all of Education.
Schneier on Security
The blog of cryptographer Bruce Schneier, offering influential analysis of security, privacy, and the societal impact of…
CryptoHack
A gamified platform teaching modern cryptography through capture-the-flag style challenges, popular with security and cr…
Passphrase Cracking Calculator
A calculator that estimates how long and how much money it would take to crack a word-based passphrase, assuming the wor…
CrypTool
An interactive cryptology learning site where you play with ciphers online, work through lessons, and solve puzzles to b…
Horcrux
A playground for Shamir Secret Sharing in the browser: split a secret into pieces, then recombine enough of them to reco…
Cryptopals Crypto Challenges
A famous set of forty-eight hands-on programming challenges that teach modern cryptography by having you break real-worl…
Stumble onto more like this
One click takes you to a page you didn't know you were looking for. Rate it and the next one lands closer to your taste.
Add to Browser — it's freeWorks in Chrome, Edge and Brave. No account needed.