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  1. Proceedings of the 2007 ACM workshop on Secure web services (SWS '07)
  2. A scalable and flexible web services authentication model
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Event-based application of ws-security policy on soap messages
What can identity-based cryptography offer to web services?
A scalable and flexible web services authentication model
Security-by-contract for web services
Access control for the services oriented architecture
Breaking and fixing the inline approach
Secure web service federation management using tpm virtualisation
Evaluating distributed xacml policies
A technical architecture for enforcing usage control requirements in service-oriented architectures
A privacy controller approach for privacy protection in web services
lightweight decentralized authorization model for inter-domain collaborations
A multimedia access control language for virtual and ambient intelligence environments
Next steps for security assertion markup language (saml)

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A scalable and flexible web services authentication model

Content Provider ACM Digital Library
Author Felix, Pedro Ribeiro, Carlos
Abstract The WS-* specification set defines a message authentication model for web services. This model targets the authentication of messages exchanges in large scale decentralized systems, composed by different authentication domains. However, it has scalability and flexibility limitations: the acquirement of identity claims requires online interactions with security token services, which introduces communication overhead and creates performance bottlenecks; the services' policies, containing its requirements, must directly point to the issuing security token services, limiting the flexibility of the trust relations. We present a new model, addressing these limitations, using two concepts from the trust management paradigm: credentials for claim inference and claim-based issuer references (attribute based delegation). We show how credentials are used both to increase the scalability, reducing the number of online token requests, and to increase the flexibility by allowing indirect trust relations, namely claim based delegation. We also show how the simultaneous usage of security tokens and credentials results in several advantages of our model, when compared to credential only trust management models. The proposed model fits nicely into the WS-* framework, namely into its message security model and policy language. We illustrate this with the implementation of an extension to the Windows Communication Foundation - a commercial grade web services platform - that provides support for this model.
Starting Page 66
Ending Page 72
Page Count 7
File Format PDF
ISBN 9781595938923
DOI 10.1145/1314418.1314429
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2007-11-02
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Authentication Web services security Trust management
Content Type Text
Resource Type Article
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