PyCrypto not fully installed on Windows XP

Question

I ran python setup.py install in a Windows XP console, and it reported as follows:

running install running build running build_py running build_ext warning: GMP library not found; Not building Crypto.PublicKey._fastmath. building 'Crypto.Random.OSRNG.winrandom' extension error: None 

When I try to run a script with import Crypto.Cipher.AES, it doesn't work, saying:

ImportError: cannot import name AES 

How can I fix this?

Answer 1

On windows, it may just be easier installing PyCrypto via a prebuilt windows installer. The Voidspace site has PyCrypto 2.1 and 2.3 installers for Python 2.2-2.7.

Answer 2

For other people like me on 64 bit windows 7:

Short version: Follow this instructions.

Long version:

Install VC++ 2008 SP1 Express. you can get it from here.

You also need the Windows SDK, specifically the Win7 + Net 3.5 SDK.

Maybe the issue was already solved in your python version, if not get the diff file from the issue page

download patch.py (or any other tool to patch diff files)

if you downloaded the patch.py and diff file in c:\Python27 just run:

python patch-11.01.py vcvars3.diff 

Finally install using pip:

pip install pycrypto