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<H1>[pycrypto] winrandom alternative (Namely for 64-bit Windows)</H1>
<B>Gregory Taylor</B>
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TITLE="[pycrypto] winrandom alternative (Namely for 64-bit Windows)">gtaylor at duointeractive.com
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<I>Tue Aug 24 14:03:33 CST 2010</I>
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<PRE>Hello,
I'm not sure if this is the best place for something like this, but I figured I'd share a workaround and a suggestion for others to take or leave. I'm currently running a 64-bit Windows 7 machine for testing some of our codebase on Windows, and ran into a snag while installing PyCrypto (so I could use Fabric, which depends on Paramiko, which depends on PyCrypto).
As you are probably aware of, PyCrypto tries to download/compile winrandom, which can be a problem for many that lack a compiler. As an alternative for those who can't/won't install winrandom, I put together a ctypes equivalent that doesn't require compilation like the original winrandom. This new module aims to be functionally equivalent in every way to winrandom, but accesses the Windows-specific cryptography library through ctypes rather than a compiled Python C extension module.
The PyPi page can be found at: <A HREF="http://pypi.python.org/pypi/winrandom-ctypes/">http://pypi.python.org/pypi/winrandom-ctypes/</A>
The Github page can be found at: <A HREF="http://github.com/duointeractive/winrandom-ctypes">http://github.com/duointeractive/winrandom-ctypes</A>
I understand that going the ctypes route might raise the minimum Python version required (2.4 or 2.5?), so this probably isn't a one-size-fits-all solution. However, if there was anything that could be done to make it easier for a user to elect to use the ctypes version, that'd be great. Perhaps PyCrypto could check at install time whether winrandom is already installed, and skip trying to compile/re-install it (winrandom-ctypes provides winrandom) to allow a user to plug something else in (winrandom-ctypes?).
Just thought I'd throw this out here for those who might find it useful in the painful situation that they have to develop on Windows.
Greg Taylor
<A HREF="http://duointeractive.com">http://duointeractive.com</A>
DUO Interactive, LLC
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