[Python-Dev] Security capabilities in Python

Jim Fulton jim at zope.com
Fri Apr 8 16:45:22 CEST 2005

You might take a look at zope.security:


It isn't a capability-based system, but it does address
similar problems and might have some useful ideas.

See the README.txt and untrustedinterpreter.txt.


Eyal Lotem wrote:
> I would like to experiment with security based on Python references as
> security capabilities.
> Unfortunatly, there are several problems that make Python references
> invalid as capabilities:
> * There is no way to create secure proxies because there are no
> private attributes.
> * Lots of Python objects are reachable unnecessarily breaking the
> principle of least privelege (i.e: object.__subclasses__() etc.)
> I was wondering if any such effort has already begun or if there are
> other considerations making Python unusable as a capability platform?
> (Please cc the reply to my email)
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Jim Fulton           mailto:jim at zope.com       Python Powered!
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