Protection.¶
Lampson, B. W. (1971). Protection. Proceedings of the 5th Princeton Conference on Information Sciences and Systems, 8(1), 437-443.
Cited by¶
2 citations across 2 artifacts.
Each citation links to the sentence it supports in the citing article.
Primes¶
- Access Control
- The access control matrix decomposition (ACLs, capabilities, or role-based delegation)
This sourceIntroduces the access-control matrix (subjects as rows, objects as columns, cells holding permitted access modes) and its decomposition into ACLs and capabilities.
Supported in partVerified against the work's full text
Lampson decomposes the matrix into capabilities (columns held by domains) and access control lists (attached to objects); role-based delegation does not appear in this 1971 paper.
“It seems reasonable to call this an access control list for the object.”
- The access control matrix decomposition (ACLs, capabilities, or role-based delegation)
- Indirection
- Indirection is the interposition of a referencing mechanism between a consumer and a provider (or between two collaborating components) such that the consumer accesses the provider through the reference rather than directly, enabling the provider's identity, location, implementation, or instance to change without requiring the consumer to change — a structural precondition for decoupling, late binding, polymorphism, virtualization, and many other composition techniques
Supported in partVerified against the work's full text
Lampson shows object names and capabilities acting as the entities through which domains reach files and other objects: two concrete cases of an interposed reference.
“The file handler asks the system for a new object name n, which the system delivers from its stock of object names (for example, by incrementing a 64-bit counter).”
- Indirection is the interposition of a referencing mechanism between a consumer and a provider (or between two collaborating components) such that the consumer accesses the provider through the reference rather than directly, enabling the provider's identity, location, implementation, or instance to change without requiring the consumer to change — a structural precondition for decoupling, late binding, polymorphism, virtualization, and many other composition techniques
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