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CryptoHack

A fun platform for learning modern cryptography

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Break Crypto

Get your hands dirty and learn about modern cryptographic protocols by solving a series of interactive puzzles and challenges.

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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?

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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
JSON in JSON Crypto on the Web 40
Oh SNAP Block Ciphers 120
L-Win Misc 120
Bruce Schneier's Password: Part 2 Misc 250
Bruce Schneier's Password Misc 100
Weekly Top Users
#1 Kuruwa 4130
#2 Rumata88 2560
#3 DateLin 2555
#4 vexilla72 1360
#5 Lyutoon 1215
Recent Solves
Oh SNAP gdobn
Blinding Light DateLin
Additive Fukurou
Encoding Challenge zerbo
You either know, XOR you don't sshd
Recent Solutions
Flipping Cookie dinesh0x0d 0
Curves and Logs W3rni0 0
Scalar Multiplication W3rni0 0
Point Addition W3rni0 0
ECB CBC WTF Jimvy 0

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