Capability
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== Examples == | == Examples == | ||
| + | Some examples of unforgeable capabilities: | ||
* Designations of objects in [[E]]. Those who hold these capabilities have the permission to invoke any method supported by the designated object. | * Designations of objects in [[E]]. Those who hold these capabilities have the permission to invoke any method supported by the designated object. | ||
* Designations of functions and procedures in [[Emily]]. Those who hold these capabilities have the permission to call designated functions or procedures. | * Designations of functions and procedures in [[Emily]]. Those who hold these capabilities have the permission to call designated functions or procedures. | ||
* Designations of channels in [http://altair.fiit.stuba.sk/mediawiki/index.php/Tamed_Pict Tamed Pict]. Those who hold these capabilities may have a permission to make send and/or receive operations with the designated channel. | * Designations of channels in [http://altair.fiit.stuba.sk/mediawiki/index.php/Tamed_Pict Tamed Pict]. Those who hold these capabilities may have a permission to make send and/or receive operations with the designated channel. | ||
| - | + | Some examples of hardly guessable capabilities: | |
| + | * Designations of remote objects in E, such as <tt>captp://*orwqphzlugjwqj2wozz7tmg47ime466j@74.125.87.147:55189/oa6vn5whhapylswhzesdlqh5ppmjkcrq.</tt> Those who hold these capabilities have the permission to invoke any method supported by the designated object. | ||
== See also == | == See also == | ||
Revision as of 16:02, 10 July 2009
Definition
Capability is an unforgeable or hardly guessable designation of an object together with a permission to make some set of operations with a given object.
Examples
Some examples of unforgeable capabilities:
- Designations of objects in E. Those who hold these capabilities have the permission to invoke any method supported by the designated object.
- Designations of functions and procedures in Emily. Those who hold these capabilities have the permission to call designated functions or procedures.
- Designations of channels in Tamed Pict. Those who hold these capabilities may have a permission to make send and/or receive operations with the designated channel.
Some examples of hardly guessable capabilities:
- Designations of remote objects in E, such as captp://*orwqphzlugjwqj2wozz7tmg47ime466j@74.125.87.147:55189/oa6vn5whhapylswhzesdlqh5ppmjkcrq. Those who hold these capabilities have the permission to invoke any method supported by the designated object.
See also
XXX improve this section
See What is a Capability, Anyway? for a partisan explanation of what capabilities actually are.
See also Overview: Capability Computation
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