doc error in example of exporting RSA key

[Tomas Vondra]

The current documentation contains this example of exporting RSA key

>>> from Crypto.PublicKey import RSA
>>>
>>> key = RSA.generate(2048)
>>> f = open('mykey.pem','w')
>>> f.write(RSA.exportKey('PEM'))
>>> f.close()
...
>>> f = open('mykey.pem','r')
>>> key = RSA.importKey(f.read())

which is incorrect and the example fails. It should use "key.exportKey" and not "RSA.exportKey".

[Darsey Litzenberger (dlitz)]

Thanks for reporting! This will be fixed in the next release.

Pull request: https://github.com/dlitz/pycrypto/pull/43

Fix committed: https://github.com/dlitz/pycrypto/commit/f9a0fc77e1c8847c1a17503e5a1b86a409b8cb2d

[Marco Herrero (helmetk)]

"key.exportKey" returns a byte string, but the file is opened in string mode 'w', so the example fails. It should be changed to 'wb'
f = open('mykey.pem','wb')