Adding RSA SignatureMethod and test

[rick446]

That's pretty much it. Uses PyCrypto if it's installed, raises NotImplementedError otherwise.

[rick446]

I guess I should also mention that the patch includes unit testing

[zookos]

Hi @rick446! Thanks for the patch. It looks good and I'm glad to see it comes with a test. Two requests:

1. Could you add a test to ensure that verify() doesn't accept the request when it comes with a bogus signatures that wasn't actually made by the private key?
2. Could you add a test that the signature produced by your code matches the example signature from http://wiki.oauth.net/w/page/12238556/TestCases . (If it helps you could also use these other implementations to check signatures or to generate example signatures: https://github.com/nshah/python-oauth/blob/master/oauth/signature_method/rsa_sha1.py , http://code.google.com/p/gdata-python-client/source/browse/src/gdata/oauth/rsa.py .)

Thanks again!

Regards,

Zooko

[gorakhargosh]

I have implemented this atop PyCrypto using X.509 certificates/public
keys and RSA private keys in my Python implementation of OAuth 1.0.
The tests you have mentioned pass.

See: https://github.com/gorakhargosh/pyoauth/blob/master/pyoauth/protocol.py#L189

The project is at http://github.com/gorakhargosh/pyoauth/

HTH.

Cheers!
Khargosh.