CryptoHack
A fun platform for learning modern cryptography
Break Crypto
Get your hands dirty and learn about modern cryptographic protocols by solving a series of interactive puzzles and challenges.
Level Up
Earn points by solving challenges. Finish categories to earn trophies and gain levels to track your progress. Can you reach the top of the scoreboard?
Fresh Challenges
We are constantly creating new challenges to keep your crypto knowledge up to date. Expect exciting brainteasers and whole new categories as the site continues to grow.
New Challenges
| Transparency | General | 50 |
| Let's Decrypt Again | RSA | 175 |
| Twin Keys | Misc | 100 |
| Invariant | Misc | 250 |
| No Difference | Misc | 175 |
Recent Solves
| Diffie-Hellman Starter 2 | vehoja | |
| Modulus Inutilis | snarkysnaut | |
| Inferius Prime | h3ll0w0rld | |
| Favourite byte | vehoja | |
| Bytes and Big Integers | vehoja |
Recent Solutions
| Transparency | EvaUnit02 | 0 |
| Flipping Cookie | nullablevoidptr | 0 |
| Favourite byte | glasgow | 0 |
| ECB Oracle | nullablevoidptr | 0 |
| Null or Never | happyhappy | 0 |