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CTF Crypto

This contains the code I use to perform various Cryptography Attacks in CTFs. This only contains attacks on common cryptography systems, not custom cryptosystems / hashing functions made by the CTF creators. If you have any suggestions for attacks to implement, raise a github issue.

The RSA tool is designed for python3, though it likely can be modified for python2 by removing timeouts. The files with Sage in the name are designed for sage. the .sage extension is the human readable version, the Sage.py version is the preparsed version which you can import into sage. Please note this project is not abandoned. I am currently helping create a CTF, so there are certain things I can't commit to this repository until after the CTF is complete.

RSA Tool

Note that this is Linux only, due to my usage of "signal" for timeouts.

Factorization Methods contained:

RSA specific methods

Low Public Exponent

Diffie Hellman

Pairings