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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
RSA or HMAC? Crypto on the Web 35
JWT Secrets Crypto on the Web 25
No Way JOSE Crypto on the Web 20
Jack's Birthday Hash Mathematics 20
Jack's Birthday Confusion Mathematics 30
Weekly Top Users
#1 Dronex 6540
#2 y011d4 5695
#3 Kuruwa 3270
#4 mugi 3165
#5 dezavva 1915
Recent Solves
Great Snakes Johnny_Stent
Finding Flags Johnny_Stent
Bean Counter samurai2020
RSA Starter 3 vassiliki
Paper Plane noopnoop
Recent Solutions
Jeff's LFSR thrypuro 0
You either know, XOR you don't Nkzlxs 0
RSA Starter 6 hackerbecker 0
Gram Schmidt EvaUnit02 0
No Random, No Bias stetstet 1

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