SNE-XACML

A high performance XACML 3.0 PDP Engine.

SNE-XACML engine applies Multi-data-type Interval Decision Diagram (MIDD) techniques to parse and transform OASIS XACML v3.0 policies into decision diagrams, which can substantially improve evaluation performance.

Author

Canh Ngo (canhnt@gmail.com)

Features

• XACML 3.0 core standard(*).
• Support multiple data types with comparable functions.
• Preserve original semantic of combining algorithms.
• Handle Indeterminate results in XACML 3.0
• Support critical attribute setting: attributes with MustBePresent=true property must be presented in requests, otherwise an error decision occurs.

(*) Not all specs has been implemented.

Usages

Include sne-xacml-core to the project's dependencies:

<dependency>
	<groupId>nl.uva.sne</groupId>
	<artifactId>sne-xacml-core</artifactId>
	<version>0.0.3</version>
</dependency>

Release Notes

###Version 0.0.3 - November 20, 2014

• Supported boolean and datetime nodes
• Used java generic types to instantiate nodes and edges
• Configured project to Travis, Jacoco & Coverage
• Published library to Maven Central Repository

###Version 0.0.2 - November 19, 2013

• Compile library as a OSGi bundle
• Send debug messages to slf4j stream

###Version 0.0.1 - June 30, 2013

• Support data types: boolean, integer, double, string, anyURI, datetime, duration
• Combining algorithms: permit-overrides, deny-overrides, permit-unless-deny, deny-unless-permit, first-applicable, only-one-applicable.
• Comparison functions: eq, gt, lt, ge, le.

Performance

Our experiments on a random 4-levels policy with 10 attributes, 360 rules show that the throughput of the engine is about 200,000 requests/s.

References

1. OASIS XACML 3.0: http://docs.oasis-open.org/xacml/3.0/xacml-3.0-core-spec-os-en.html