A toolbox for tinkering with cryptographic implementations.
It came about as a side effect of working through the cryptopals challenges. It's definitely still a work in progress and nothing here is final. Feel free to use it as you see fit.
Currently this library requires PyCrypto to be installed. This might change in the future but for now there are a couple of functions in there that need it and I haven't made them optional.
If you want to install this using setup.py you can run (from the root of this repo):
python setup.py install
My suggestion is to install this using pip. First run:
python setup.py sdist
which will create a dist directory with the packaged archive inside. Then run:
pip install dist/<archive>
The following modules currently exist:
Some basic tools for doing statistical ciphertext analysis: chi squared test, rot, repeating key xor.
Tools that deal with weak block cipher implementations: ECB mode detection, ECB/CBC oracle decryption.
Frequently used utility functions.
Length extension attacks against sha1 and md4. The tweaked hash algorithms themselves are in cryptools.impl.