What is the re ection number in java?

Re ection number in LNCS pages Springer July The authorWelch and R J Stroud Using re ection as a mechanism for enforcing security policies in mobile code In Proceedings of ESORICS number in Lecture Notes in Computer Science pages October

Open AccessBook Chapter10.1007/3-540-45429-2_9

A Simple Security-Aware MOP for Java

Denis Caromel, +2 more

- 25 Sep 2001

- Lecture Notes in Computer Science

- pp 118-125

TL;DR: It is proved that, but giving all permissions only to the kernel of the MOP and by using Java's built-in mechanism for propagating security contexts, the permissions required by base-level and meta-level code do not interfere.

Abstract: This article investigates the security problems raised by the use of proxy-based runtime meta-object protocols (MOPs) for Java and provides an approach for making meta-level code transparent to base-level code, security-wise. We prove that, but giving all permissions only to the kernel of the MOP and by using Java's built-in mechanism for propagating security contexts, the permissions required by base-level and meta-level code do not interfere. We illustrate this result in the context of a simple proxy-based runtime MOP that we wrote.

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Most frequently asked questions

1. what is the security architecture of java?

The Security Architecture of JavaThe security architecture of Java is mostly concerned with access control i e protecting access to critical local resources such as les sockets or the win dowing system

2. What is the security architecture of Java?

The security architecture of Java also provides the doPrivileged construct that limits the computation of the intersection of the permissions of the protec tion domains where doPrivileged is invoked and those invoked from itA security aware MOPIn the context of an component based application that runs within a single vir tual machine the authors want the following property to hold

3. what is the purpose of a stub class?

What a stub class actually does issimply to rede ne all the methods it inherits from its superclass in order to within the body of each such method build an object that represents the call and pass this object to the meta object associated with the stub

4. what is the purpose of the MOP?

One of the originalities of their MOP lies in the way the programmer declares which meta level class is to be used when a rei ed instance of a given base level class is created Unlike other MOPs which use a separate le for declaring such mappings the authors have chosen to use the interface construct of the Java language instead

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References

Proceedings Article•10.1145/74877.74910

Computational reflection in class based object-oriented languages

Jacques Ferber

- 01 Sep 1989

TL;DR: A model of computational reflection where meta-objects are instances of a class META-OBJECT or of one of its subclasses is introduced, showing that it is important to differentiate between structural reflection and computational reflection.

...read moreread less

215

Book Chapter•10.1007/3-540-48443-4_2

From Dalang to Kava - The Evolution of a Reflective Java Extension

Ian Welch, +1 more

- 19 Jul 1999

- Lecture Notes in Computer Science

TL;DR: The class wrapper approach is evaluated, and issues that relate to the transparent application of reflection to COTS systems are discussed, which has informed the design of a new version of Dalang called Kava that implements a metaobject protocol through the application of standard byte code transformations.

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Proceedings Article•10.1109/IWOOOS.1996.557866

MetaJava: an efficient run-time meta architecture for Java/sup TM/

J. Kleinoder, +1 more

- 27 Oct 1996

TL;DR: This work explains the model of an object-oriented architecture that allows flexible and selective attachment of reflective properties to objects and shows how reflection can be obtained with minimal changes to the existing system and how the penalty in run-time performance can be minimized.

...read moreread less

•Proceedings Article

The design and implementation of Guaraná

Alexandre Oliva, +1 more

- 03 May 1999

TL;DR: Most design decisions presented in this paper can be transported to other programming languages and MOPs, improving their flexibility, reconfigurability, security and meta-level code reuse.

...read moreread less

Journal Article•10.1145/74878.74910

Computational reflection in class based object-oriented languages

FerberJ.

- 01 Sep 1989

- Sigplan Notices

TL;DR: In this article, various models of computational reflection in class-based object oriented languages are described, and two different approaches are covered: the meta-object approach which supposes that every object is an object, and the class-oriented approach which assumes that each object is a class.

...read moreread less

A Simple Security-Aware MOP for Java

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Most frequently asked questions

1. what is the security architecture of java?

2. What is the security architecture of Java?

3. what is the purpose of a stub class?

4. what is the purpose of the MOP?

5. What is the re ection number in java?

Citations

Motivation and Requirements for a Versatile AOP Kernel

Re-engineering Security as a Crosscutting Concern

A security framework for reflective Java applications

Lightweight Grid Platform: Design Methodology.

Access control to reflection with object ownership

References

Computational reflection in class based object-oriented languages

From Dalang to Kava - The Evolution of a Reflective Java Extension

MetaJava: an efficient run-time meta architecture for Java/sup TM/

The design and implementation of Guaraná

Computational reflection in class based object-oriented languages

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