Cannot install on Windows - invokes "chmod" shell command

If it has a dependency on chmod, this isn't very Windows-friendly. A Windows build doc would be good, to explain build dependencies. E.g. MinGW, or Cygwin? Otherwise, the PyPI entry is doubtful in its claim to support Windows.

C:\Documents and Settings\craig.mcqueen\My Documents\software\temp\pycrypto-2.6>py setup.py install
running install
running build
running build_py
creating build
creating build\lib.win32-2.7
creating build\lib.win32-2.7\Crypto
copying lib\Crypto\pct_warnings.py -> build\lib.win32-2.7\Crypto
copying lib\Crypto\__init__.py -> build\lib.win32-2.7\Crypto
creating build\lib.win32-2.7\Crypto\Hash
copying lib\Crypto\Hash\hashalgo.py -> build\lib.win32-2.7\Crypto\Hash
copying lib\Crypto\Hash\HMAC.py -> build\lib.win32-2.7\Crypto\Hash
copying lib\Crypto\Hash\MD2.py -> build\lib.win32-2.7\Crypto\Hash
copying lib\Crypto\Hash\MD4.py -> build\lib.win32-2.7\Crypto\Hash
copying lib\Crypto\Hash\MD5.py -> build\lib.win32-2.7\Crypto\Hash
copying lib\Crypto\Hash\RIPEMD.py -> build\lib.win32-2.7\Crypto\Hash
copying lib\Crypto\Hash\SHA.py -> build\lib.win32-2.7\Crypto\Hash
copying lib\Crypto\Hash\SHA224.py -> build\lib.win32-2.7\Crypto\Hash
copying lib\Crypto\Hash\SHA256.py -> build\lib.win32-2.7\Crypto\Hash
copying lib\Crypto\Hash\SHA384.py -> build\lib.win32-2.7\Crypto\Hash
copying lib\Crypto\Hash\SHA512.py -> build\lib.win32-2.7\Crypto\Hash
copying lib\Crypto\Hash\__init__.py -> build\lib.win32-2.7\Crypto\Hash
creating build\lib.win32-2.7\Crypto\Cipher
copying lib\Crypto\Cipher\AES.py -> build\lib.win32-2.7\Crypto\Cipher
copying lib\Crypto\Cipher\ARC2.py -> build\lib.win32-2.7\Crypto\Cipher
copying lib\Crypto\Cipher\ARC4.py -> build\lib.win32-2.7\Crypto\Cipher
copying lib\Crypto\Cipher\blockalgo.py -> build\lib.win32-2.7\Crypto\Cipher
copying lib\Crypto\Cipher\Blowfish.py -> build\lib.win32-2.7\Crypto\Cipher
copying lib\Crypto\Cipher\CAST.py -> build\lib.win32-2.7\Crypto\Cipher
copying lib\Crypto\Cipher\DES.py -> build\lib.win32-2.7\Crypto\Cipher
copying lib\Crypto\Cipher\DES3.py -> build\lib.win32-2.7\Crypto\Cipher
copying lib\Crypto\Cipher\PKCS1_OAEP.py -> build\lib.win32-2.7\Crypto\Cipher
copying lib\Crypto\Cipher\PKCS1_v1_5.py -> build\lib.win32-2.7\Crypto\Cipher
copying lib\Crypto\Cipher\XOR.py -> build\lib.win32-2.7\Crypto\Cipher
copying lib\Crypto\Cipher\__init__.py -> build\lib.win32-2.7\Crypto\Cipher
creating build\lib.win32-2.7\Crypto\Util
copying lib\Crypto\Util\asn1.py -> build\lib.win32-2.7\Crypto\Util
copying lib\Crypto\Util\Counter.py -> build\lib.win32-2.7\Crypto\Util
copying lib\Crypto\Util\number.py -> build\lib.win32-2.7\Crypto\Util
copying lib\Crypto\Util\py21compat.py -> build\lib.win32-2.7\Crypto\Util
copying lib\Crypto\Util\py3compat.py -> build\lib.win32-2.7\Crypto\Util
copying lib\Crypto\Util\randpool.py -> build\lib.win32-2.7\Crypto\Util
copying lib\Crypto\Util\RFC1751.py -> build\lib.win32-2.7\Crypto\Util
copying lib\Crypto\Util\winrandom.py -> build\lib.win32-2.7\Crypto\Util
copying lib\Crypto\Util\_number_new.py -> build\lib.win32-2.7\Crypto\Util
copying lib\Crypto\Util\__init__.py -> build\lib.win32-2.7\Crypto\Util
creating build\lib.win32-2.7\Crypto\Random
copying lib\Crypto\Random\random.py -> build\lib.win32-2.7\Crypto\Random
copying lib\Crypto\Random\_UserFriendlyRNG.py -> build\lib.win32-2.7\Crypto\Random
copying lib\Crypto\Random\__init__.py -> build\lib.win32-2.7\Crypto\Random
creating build\lib.win32-2.7\Crypto\Random\Fortuna
copying lib\Crypto\Random\Fortuna\FortunaAccumulator.py -> build\lib.win32-2.7\Crypto\Random\Fortuna
copying lib\Crypto\Random\Fortuna\FortunaGenerator.py -> build\lib.win32-2.7\Crypto\Random\Fortuna
copying lib\Crypto\Random\Fortuna\SHAd256.py -> build\lib.win32-2.7\Crypto\Random\Fortuna
copying lib\Crypto\Random\Fortuna\__init__.py -> build\lib.win32-2.7\Crypto\Random\Fortuna
creating build\lib.win32-2.7\Crypto\Random\OSRNG
copying lib\Crypto\Random\OSRNG\fallback.py -> build\lib.win32-2.7\Crypto\Random\OSRNG
copying lib\Crypto\Random\OSRNG\nt.py -> build\lib.win32-2.7\Crypto\Random\OSRNG
copying lib\Crypto\Random\OSRNG\posix.py -> build\lib.win32-2.7\Crypto\Random\OSRNG
copying lib\Crypto\Random\OSRNG\rng_base.py -> build\lib.win32-2.7\Crypto\Random\OSRNG
copying lib\Crypto\Random\OSRNG\__init__.py -> build\lib.win32-2.7\Crypto\Random\OSRNG
creating build\lib.win32-2.7\Crypto\SelfTest
copying lib\Crypto\SelfTest\st_common.py -> build\lib.win32-2.7\Crypto\SelfTest
copying lib\Crypto\SelfTest\__init__.py -> build\lib.win32-2.7\Crypto\SelfTest
creating build\lib.win32-2.7\Crypto\SelfTest\Cipher
copying lib\Crypto\SelfTest\Cipher\common.py -> build\lib.win32-2.7\Crypto\SelfTest\Cipher
copying lib\Crypto\SelfTest\Cipher\test_AES.py -> build\lib.win32-2.7\Crypto\SelfTest\Cipher
copying lib\Crypto\SelfTest\Cipher\test_ARC2.py -> build\lib.win32-2.7\Crypto\SelfTest\Cipher
copying lib\Crypto\SelfTest\Cipher\test_ARC4.py -> build\lib.win32-2.7\Crypto\SelfTest\Cipher
copying lib\Crypto\SelfTest\Cipher\test_Blowfish.py -> build\lib.win32-2.7\Crypto\SelfTest\Cipher
copying lib\Crypto\SelfTest\Cipher\test_CAST.py -> build\lib.win32-2.7\Crypto\SelfTest\Cipher
copying lib\Crypto\SelfTest\Cipher\test_DES.py -> build\lib.win32-2.7\Crypto\SelfTest\Cipher
copying lib\Crypto\SelfTest\Cipher\test_DES3.py -> build\lib.win32-2.7\Crypto\SelfTest\Cipher
copying lib\Crypto\SelfTest\Cipher\test_pkcs1_15.py -> build\lib.win32-2.7\Crypto\SelfTest\Cipher
copying lib\Crypto\SelfTest\Cipher\test_pkcs1_oaep.py -> build\lib.win32-2.7\Crypto\SelfTest\Cipher
copying lib\Crypto\SelfTest\Cipher\test_XOR.py -> build\lib.win32-2.7\Crypto\SelfTest\Cipher
copying lib\Crypto\SelfTest\Cipher\__init__.py -> build\lib.win32-2.7\Crypto\SelfTest\Cipher
creating build\lib.win32-2.7\Crypto\SelfTest\Hash
copying lib\Crypto\SelfTest\Hash\common.py -> build\lib.win32-2.7\Crypto\SelfTest\Hash
copying lib\Crypto\SelfTest\Hash\test_HMAC.py -> build\lib.win32-2.7\Crypto\SelfTest\Hash
copying lib\Crypto\SelfTest\Hash\test_MD2.py -> build\lib.win32-2.7\Crypto\SelfTest\Hash
copying lib\Crypto\SelfTest\Hash\test_MD4.py -> build\lib.win32-2.7\Crypto\SelfTest\Hash
copying lib\Crypto\SelfTest\Hash\test_MD5.py -> build\lib.win32-2.7\Crypto\SelfTest\Hash
copying lib\Crypto\SelfTest\Hash\test_RIPEMD.py -> build\lib.win32-2.7\Crypto\SelfTest\Hash
copying lib\Crypto\SelfTest\Hash\test_SHA.py -> build\lib.win32-2.7\Crypto\SelfTest\Hash
copying lib\Crypto\SelfTest\Hash\test_SHA224.py -> build\lib.win32-2.7\Crypto\SelfTest\Hash
copying lib\Crypto\SelfTest\Hash\test_SHA256.py -> build\lib.win32-2.7\Crypto\SelfTest\Hash
copying lib\Crypto\SelfTest\Hash\test_SHA384.py -> build\lib.win32-2.7\Crypto\SelfTest\Hash
copying lib\Crypto\SelfTest\Hash\test_SHA512.py -> build\lib.win32-2.7\Crypto\SelfTest\Hash
copying lib\Crypto\SelfTest\Hash\__init__.py -> build\lib.win32-2.7\Crypto\SelfTest\Hash
creating build\lib.win32-2.7\Crypto\SelfTest\Protocol
copying lib\Crypto\SelfTest\Protocol\test_AllOrNothing.py -> build\lib.win32-2.7\Crypto\SelfTest\Protocol
copying lib\Crypto\SelfTest\Protocol\test_chaffing.py -> build\lib.win32-2.7\Crypto\SelfTest\Protocol
copying lib\Crypto\SelfTest\Protocol\test_KDF.py -> build\lib.win32-2.7\Crypto\SelfTest\Protocol
copying lib\Crypto\SelfTest\Protocol\test_rfc1751.py -> build\lib.win32-2.7\Crypto\SelfTest\Protocol
copying lib\Crypto\SelfTest\Protocol\__init__.py -> build\lib.win32-2.7\Crypto\SelfTest\Protocol
creating build\lib.win32-2.7\Crypto\SelfTest\PublicKey
copying lib\Crypto\SelfTest\PublicKey\test_DSA.py -> build\lib.win32-2.7\Crypto\SelfTest\PublicKey
copying lib\Crypto\SelfTest\PublicKey\test_ElGamal.py -> build\lib.win32-2.7\Crypto\SelfTest\PublicKey
copying lib\Crypto\SelfTest\PublicKey\test_importKey.py -> build\lib.win32-2.7\Crypto\SelfTest\PublicKey
copying lib\Crypto\SelfTest\PublicKey\test_RSA.py -> build\lib.win32-2.7\Crypto\SelfTest\PublicKey
copying lib\Crypto\SelfTest\PublicKey\__init__.py -> build\lib.win32-2.7\Crypto\SelfTest\PublicKey
creating build\lib.win32-2.7\Crypto\SelfTest\Random
copying lib\Crypto\SelfTest\Random\test_random.py -> build\lib.win32-2.7\Crypto\SelfTest\Random
copying lib\Crypto\SelfTest\Random\test_rpoolcompat.py -> build\lib.win32-2.7\Crypto\SelfTest\Random
copying lib\Crypto\SelfTest\Random\__init__.py -> build\lib.win32-2.7\Crypto\SelfTest\Random
creating build\lib.win32-2.7\Crypto\SelfTest\Random\Fortuna
copying lib\Crypto\SelfTest\Random\Fortuna\test_FortunaAccumulator.py -> build\lib.win32-2.7\Crypto\SelfTest\Random\Fort
una
copying lib\Crypto\SelfTest\Random\Fortuna\test_FortunaGenerator.py -> build\lib.win32-2.7\Crypto\SelfTest\Random\Fortun
a
copying lib\Crypto\SelfTest\Random\Fortuna\test_SHAd256.py -> build\lib.win32-2.7\Crypto\SelfTest\Random\Fortuna
copying lib\Crypto\SelfTest\Random\Fortuna\__init__.py -> build\lib.win32-2.7\Crypto\SelfTest\Random\Fortuna
creating build\lib.win32-2.7\Crypto\SelfTest\Random\OSRNG
copying lib\Crypto\SelfTest\Random\OSRNG\test_fallback.py -> build\lib.win32-2.7\Crypto\SelfTest\Random\OSRNG
copying lib\Crypto\SelfTest\Random\OSRNG\test_generic.py -> build\lib.win32-2.7\Crypto\SelfTest\Random\OSRNG
copying lib\Crypto\SelfTest\Random\OSRNG\test_nt.py -> build\lib.win32-2.7\Crypto\SelfTest\Random\OSRNG
copying lib\Crypto\SelfTest\Random\OSRNG\test_posix.py -> build\lib.win32-2.7\Crypto\SelfTest\Random\OSRNG
copying lib\Crypto\SelfTest\Random\OSRNG\test_winrandom.py -> build\lib.win32-2.7\Crypto\SelfTest\Random\OSRNG
copying lib\Crypto\SelfTest\Random\OSRNG\__init__.py -> build\lib.win32-2.7\Crypto\SelfTest\Random\OSRNG
creating build\lib.win32-2.7\Crypto\SelfTest\Util
copying lib\Crypto\SelfTest\Util\test_asn1.py -> build\lib.win32-2.7\Crypto\SelfTest\Util
copying lib\Crypto\SelfTest\Util\test_Counter.py -> build\lib.win32-2.7\Crypto\SelfTest\Util
copying lib\Crypto\SelfTest\Util\test_number.py -> build\lib.win32-2.7\Crypto\SelfTest\Util
copying lib\Crypto\SelfTest\Util\test_winrandom.py -> build\lib.win32-2.7\Crypto\SelfTest\Util
copying lib\Crypto\SelfTest\Util\__init__.py -> build\lib.win32-2.7\Crypto\SelfTest\Util
creating build\lib.win32-2.7\Crypto\SelfTest\Signature
copying lib\Crypto\SelfTest\Signature\test_pkcs1_15.py -> build\lib.win32-2.7\Crypto\SelfTest\Signature
copying lib\Crypto\SelfTest\Signature\test_pkcs1_pss.py -> build\lib.win32-2.7\Crypto\SelfTest\Signature
copying lib\Crypto\SelfTest\Signature\__init__.py -> build\lib.win32-2.7\Crypto\SelfTest\Signature
creating build\lib.win32-2.7\Crypto\Protocol
copying lib\Crypto\Protocol\AllOrNothing.py -> build\lib.win32-2.7\Crypto\Protocol
copying lib\Crypto\Protocol\Chaffing.py -> build\lib.win32-2.7\Crypto\Protocol
copying lib\Crypto\Protocol\KDF.py -> build\lib.win32-2.7\Crypto\Protocol
copying lib\Crypto\Protocol\__init__.py -> build\lib.win32-2.7\Crypto\Protocol
creating build\lib.win32-2.7\Crypto\PublicKey
copying lib\Crypto\PublicKey\DSA.py -> build\lib.win32-2.7\Crypto\PublicKey
copying lib\Crypto\PublicKey\ElGamal.py -> build\lib.win32-2.7\Crypto\PublicKey
copying lib\Crypto\PublicKey\pubkey.py -> build\lib.win32-2.7\Crypto\PublicKey
copying lib\Crypto\PublicKey\RSA.py -> build\lib.win32-2.7\Crypto\PublicKey
copying lib\Crypto\PublicKey\_DSA.py -> build\lib.win32-2.7\Crypto\PublicKey
copying lib\Crypto\PublicKey\_RSA.py -> build\lib.win32-2.7\Crypto\PublicKey
copying lib\Crypto\PublicKey\_slowmath.py -> build\lib.win32-2.7\Crypto\PublicKey
copying lib\Crypto\PublicKey\__init__.py -> build\lib.win32-2.7\Crypto\PublicKey
creating build\lib.win32-2.7\Crypto\Signature
copying lib\Crypto\Signature\PKCS1_PSS.py -> build\lib.win32-2.7\Crypto\Signature
copying lib\Crypto\Signature\PKCS1_v1_5.py -> build\lib.win32-2.7\Crypto\Signature
copying lib\Crypto\Signature\__init__.py -> build\lib.win32-2.7\Crypto\Signature
running build_ext
running build_configure
'chmod' is not recognized as an internal or external command,
operable program or batch file.
Traceback (most recent call last):
  File "setup.py", line 456, in <module>
    core.setup(**kw)
  File "C:\Python27\lib\distutils\core.py", line 152, in setup
    dist.run_commands()
  File "C:\Python27\lib\distutils\dist.py", line 953, in run_commands
    self.run_command(cmd)
  File "C:\Python27\lib\distutils\dist.py", line 972, in run_command
    cmd_obj.run()
  File "C:\Python27\lib\distutils\command\install.py", line 563, in run
    self.run_command('build')
  File "C:\Python27\lib\distutils\cmd.py", line 326, in run_command
    self.distribution.run_command(command)
  File "C:\Python27\lib\distutils\dist.py", line 972, in run_command
    cmd_obj.run()
  File "C:\Python27\lib\distutils\command\build.py", line 127, in run
    self.run_command(cmd_name)
  File "C:\Python27\lib\distutils\cmd.py", line 326, in run_command
    self.distribution.run_command(command)
  File "C:\Python27\lib\distutils\dist.py", line 972, in run_command
    cmd_obj.run()
  File "setup.py", line 251, in run
    self.run_command(cmd_name)
  File "C:\Python27\lib\distutils\cmd.py", line 326, in run_command
    self.distribution.run_command(command)
  File "C:\Python27\lib\distutils\dist.py", line 972, in run_command
    cmd_obj.run()
  File "setup.py", line 273, in run
    raise RuntimeError("chmod error")
RuntimeError: chmod error