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CryptoHack

A fun free 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
RSA or HMAC? Part 2 Crypto on the Web 100
Roll your Own Mathematics 90
Dancing Queen Block Ciphers 120
SSH Keys General 35
LFSR Destroyer Misc 250
Weekly Top Users
#1 winderica 4965
#2 y7 3250
#3 GustavoX22 2520
#4 goober 2380
#5 hack_at_ash 1485
Recent Solves
Network Attacks Cahid
Network Attacks otreble
Great Snakes Cahid
No Way JOSE nomindart
Great Snakes otreble
Recent Solutions
Endless Emails anantarupa_1801 0
Encoding Challenge Game0v3r 0
Gotta Go Fast _ph03n1x 0
You either know, XOR you don't nopfault 0
Favourite byte nopfault 0

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