[pycrypto] _fastmath None !!

[jd]

Hi Lorenz, 
   Thanks for quick response.

It is happening on someone else's machine, I have requested them to check and send me details. 

In the mean time I looked that the code.
In RSA.py

try:
    from Crypto.PublicKey import _fastmath
except ImportError:
    _fastmath = None


Could this be problem ?
Thanks
/Jd


--- On Mon, 5/17/10, Lorenz Quack <don at amberfisharts.com> wrote:

> From: Lorenz Quack <don at amberfisharts.com>
> Subject: Re: [pycrypto] _fastmath None !!
> To: "PyCrypto discussion list" <pycrypto at lists.dlitz.net>
> Date: Monday, May 17, 2010, 8:40 AM
> Hi again,
> 
> no idea what's going wrong. normally pycrypto should fall
> back to _slowmath (a pure python implementation) when gmp is
> 
> not installed meaning _fastmath is not available (_fastmath
> is a C implementation using gmp).
> 
> Maybe you could prvide some more information, like python
> version, pycrypto version, is gmp installed?
> Also it would be a good idea to provide a
> small/minimalistic example demonstrating the problem.
> That way it is easyier to figure out if it's a bug in
> pycrypto or in your code.
> 
> cheers,
> //Lorenz
> 
> 
> 
> On 05/17/2010 04:48 PM, jd wrote:
> > Hi Guys
> >      I am serializing the pycrypto keys
> using pickle.. as suggested in one of recent posts. It is
> working fine, but giving following problem on cenos 5.1.
> (stack at the bottom of email)
> >
> > 'NoneType' object has no attribute 'rsa_construct'
> >
> >
> >      I looked at the code.. it seems
> while constructing _fastmath is used. Any workarounds /
> fixes ? I do not think changing to saving tuple would help
> as it would also need to use __setstate__..
> >
> > Help is greatly appreciated.
> > Thanks
> > /Jd
> >
> > File "/tg2env/bin/paster", line 7, in ?
> >      sys.exit(
> >    File
> "/tg2env/lib/python2.4/site-packages/PasteScript-1.7.3-py2.4.egg/paste/script/command.py",
> line 84, in run
> >      invoke(command, command_name,
> options, args[1:])
> >    File
> "/tg2env/lib/python2.4/site-packages/PasteScript-1.7.3-py2.4.egg/paste/script/command.py",
> line 123, in invoke
> >      exit_code = runner.run(args)
> >    File
> "/tg2env/lib/python2.4/site-packages/PasteScript-1.7.3-py2.4.egg/paste/script/command.py",
> line 218, in run
> >      result = self.command()
> >    File
> "/tg2env/lib/python2.4/site-packages/PasteScript-1.7.3-py2.4.egg/paste/script/serve.py",
> line 276, in command
> >      relative_to=base,
> global_conf=vars)
> >    File
> "/tg2env/lib/python2.4/site-packages/PasteScript-1.7.3-py2.4.egg/paste/script/serve.py",
> line 311, in loadapp
> >      return loadapp(
> >    File
> "/tg2env/lib/python2.4/site-packages/PasteDeploy-1.3.3-py2.4.egg/paste/deploy/loadwsgi.py",
> line 204, in loadapp
> >      return loadobj(APP, uri,
> name=name, **kw)
> >    File
> "/tg2env/lib/python2.4/site-packages/PasteDeploy-1.3.3-py2.4.egg/paste/deploy/loadwsgi.py",
> line 225, in loadobj
> >      return context.create()
> >    File
> "/tg2env/lib/python2.4/site-packages/PasteDeploy-1.3.3-py2.4.egg/paste/deploy/loadwsgi.py",
> line 625, in create
> >      return
> self.object_type.invoke(self)
> >    File
> "/tg2env/lib/python2.4/site-packages/PasteDeploy-1.3.3-py2.4.egg/paste/deploy/loadwsgi.py",
> line 110, in invoke
> >      return fix_call(context.object,
> context.global_conf, **context.local_conf)
> >    File
> "/tg2env/lib/python2.4/site-packages/PasteDeploy-1.3.3-py2.4.egg/paste/deploy/util/fixtypeerror.py",
> line 57, in fix_call
> >      val = callable(*args, **kw)
> >    File
> "/m2svn/trunk/src/app/web/app/app/config/middleware.py",
> line 46, in make_app
> >      if verify_license():
> >    File
> "/m2svn/trunk/src/app/web/app/app/core/utils/utils.py", line
> 2221, in verify_license
> >      l_info =
> read_license_using_embeded(license_file)
> >    File
> "/m2svn/trunk/src/app/web/app/app/core/utils/utils.py", line
> 2202, in read_license_using_embeded
> >      pub_key =get_embeded_key()
> >    File
> "/m2svn/trunk/src/app/web/app/app/core/utils/utils.py", line
> 2197, in get_embeded_key
> >      key = pickle.loads(str)
> >    File "/usr/lib64/python2.4/pickle.py",
> line 1394, in loads
> >      return Unpickler(file).load()
> >    File "/usr/lib64/python2.4/pickle.py",
> line 872, in load
> >      dispatch[key](self)
> >    File "/usr/lib64/python2.4/pickle.py",
> line 1237, in load_build
> >      setstate(state)
> >    File
> "build/bdist.linux-x86_64/egg/Crypto/PublicKey/RSA.py", line
> 171, in __setstate__
> > AttributeError: 'NoneType' object has no attribute
> 'rsa_construct'
> >
> 
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