[cap-talk] introducers

[John Carlson]

Combining the two

Systems can combine protected and unprotected capabilities. E programs  
usually deal with protected capabilities. However, it is possible to  
convert a protected capability to an unprotected one (a "Sturdy Ref"  
or its representation as a "cap:" or "httpsy:" URL). The ability to do  
this is restricted (by requiring access to an "introducer" object),  
since being able to freely convert between the two capability types  
would introduce all the security weaknesses of unprotected  
capabilities for programs on each machine, where these weaknesses are  
unnecessary.


On Mar 12, 2008, at 8:58 AM, Mark Miller wrote:

> On Wed, Mar 12, 2008 at 12:23 AM, John Carlson
> <john.carlson3 at sbcglobal.net> wrote:
>> I read on the wikipedia that there were things called "introducers."
>
> Where? It would help to know which introducer concept you are trying
> to understand ;)
>
> -- 
> Text by me above is hereby placed in the public domain
>
> Cheers,
> --MarkM
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