A small and insanely fast ARCFOUR (RC4) cipher implementation of Python.

• Strongly focused on performance; entire source code is written in C.
• Easily installable; single file with no dependency.

Below is benchmark metrics against 3 major RC4 implementations.

arc4 is 67 % faster than the de facto PyCrypto library. Also, 1889 % faster than pure-Python rc4 library.

The whole benchmark code is in ./benchmark.py.

Install from PyPI:

pip install arc4 

Or clone the repo and do install:

git clone https://github.com/manicmaniac/arc4.git cd arc4 python setup.py install 

fromarc4importARC4arc4=ARC4('key') cipher=arc4.encrypt('some plain text to encrypt')

Because RC4 is a stream cipher, you must initialize RC4 object in the beginning of each operations.

arc4=ARC4('key') arc4.decrypt(cipher)

python-munittestdiscover

This software is under the MIT License.