[cap-talk] what is designation

[John Carlson]

On Feb 24, 2009, at 3:01 AM, Toby Murray wrote:

> On Tue, 2009-02-24 at 10:43 +0000, David-Sarah Hopwood wrote:
>> Ben Laurie wrote:
>>> On Tue, Feb 24, 2009 at 9:13 AM, John Carlson
>>> <john.carlson3 at sbcglobal.net> wrote:
>>>> Can someone explain what designation is when it comes to
>>>> capabilities?  I think it's the act of giving authority.
>>>
>>> Designation is the user selecting something, for example, a file  
>>> in a
>>> file open dialog, or dropping some drag'n'drop thing, or pasting.
>>
>> From the point of view of an access control system, it is subjects  
>> that
>> designate, only sometimes on behalf of a single specific user.
>

This sounds like subjects designate.

> It is worth remembering that designating comes in two flavours: naming
> and pointing. Pointers usually (but probably don't have to) carry
> permission to access the thing being designated. Names usually do not,
> except when they designate capabilities. Capabilities are usually
> thought of as pointers, but sometimes also thought of as names


This sounds like names designate.


I think this requires more explanation.


> More on this at:
> http://www.waterken.com/dev/YURL/Analogy/
>
> and I thought somewhere on erights.org too but I can't find it now.
>
> Cheers
>
> Toby
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