[cap-talk] Confused Deputies in Capability Systems - not

Bill Frantz frantz at pwpconsult.com
Thu Feb 26 23:53:18 EST 2009


marcus.brinkmann at ruhr-uni-bochum.de (Marcus Brinkmann) on Thursday, February 26, 2009 wrote:

>Capabilities can only survive in an isolated, homogeneous environment.  I
>think that this is a serious limitation, which in my opinion severely
>restricts the applicability of capability theory.

This statement is wrong on the face of it. Any data-as-capability (e.g.
WebKeys, SPKI authorizations, etc.) can be securely passed through systems,
such as encrypted email, that are completely unaware of capabilities, let
alone the precise capability system they represent.

Cheers - Bill

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