About

Below are some problems related to computer security (specifically poorly implemented security). Do Them. You are free to use any language and environment you like to complete them. The problems require familiarity with programming, but not necessarily with applied cryptography or computer security in general. An understanding of how some of the algorithms and tools in the problems work will be of use, so as a starting point you can find some resources to help you begin here. If this topic is new to you, you may want to start with the Tutorial Problems.

Problems

CRIMEs against TLS

Exploit a protocol that compresses data before encrypting it

Solved by 27
Backdoored PRNG

Exploit a backdoor in an elliptic curve based PRNG

Solved by 27
DSA with LCG nonces

Even we don't know how to solve this one

Solved by 14
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