Users, Groups, Permissions for Squeak applications
Withers, Robert
rwithers at quallaby.com
Fri Nov 22 21:51:55 UTC 2002
> From: Ned Konz
...
>
> Lex Spoon did some work in Squeak called "Islands"
> http://aspn.activestate.com/ASPN/Mail/Message/789677
> http://minnow.cc.gatech.edu/squeak/2074
>
> Rob Withers was doing Squeak-E (based on the E language
> work); I don't
> know how far he got into capabilities-based security.
Thanks for the plug, Ned.
You can find the single image work I did to support eventual sending here:
http://minnow.cc.gatech.edu/squeak/2410. As Cees mentions, I am working to
produce the encrypted networking framework (VatTP - 64bit 3DES) which will
then link into the eventual sending framework (CapTP)(with the addition of
the classes RemoteRef, RemotePromise and RemoteResolver and some GC
operations). I have VatTP working, but I am changing the protocol
negotiation to hopefully match VatTP in E (http:www.eights.org), before I
release it.
The basic concept is each Vat would correspond to one of Lex's Islands,
which may in turn be one of Croquet's Spaces. It would be a user space. I
am trying to provide reference decoupling between Vats, and an execution
semantic to send messages to cross-Vat references (eventual sending). The
rest of the work in isolating the system is planned to be Lex's work with
Islands.
It looks to be a productive winter.
cheers,
robert
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