dDelega

2013 ◽  
Vol 7 (3) ◽  
pp. 53-67 ◽  
Author(s):  
Michele Tomaiuolo
Keyword(s):  
Web Services ◽  
Access Control ◽  
Open Source Software ◽  
Trust Management ◽  
A Priori ◽  
Third Parties ◽  
Organizational Boundaries ◽  
Management Framework ◽  
Multiple Levels ◽  
Access Rights

In the context of Web services, access control presents some interesting challenges, especially when services are exposed to a global audience, with users accessing them from different systems and under different security settings. A decentralized approach to access control, which can be applied to such open environments, is represented by Trust Management. In fact, it is based on the peer-to-peer delegation of access rights among users, also across organizational boundaries, without supposing a-priori the existence of trusted third parties in the system. This article presents dDelega, a Trust Management framework for SOAP-style and REST-style Web services, available as open source software and usable in different application scenarios. The framework allows users to create multiple levels of delegation of access rights for protected resources. It defines various certificates, for binding names, permissions and oblivious attributes to users, adhering to relevant standards, such as WS-Security, SAML and XACML.

A Two Phases Self-healing Framework for Service-oriented Systems

2021 ◽  
Vol 15 (2) ◽  
pp. 1-25
Author(s):  
Amal Alhosban ◽  
Zaki Malik ◽  
Khayyam Hashmi ◽  
Brahim Medjahed ◽  
Hassan Al-Ababneh
Keyword(s):  
Web Services ◽  
A Priori ◽  
Fault Management ◽  
Service Selection ◽  
Exception Handling ◽  
Self Healing ◽  
Service Oriented Architectures ◽  
Service Oriented ◽  
Improved Performance ◽  
High Level

Service-Oriented Architectures (SOA) enable the automatic creation of business applications from independently developed and deployed Web services. As Web services are inherently a priori unknown, how to deliver reliable Web services compositions is a significant and challenging problem. Services involved in an SOA often do not operate under a single processing environment and need to communicate using different protocols over a network. Under such conditions, designing a fault management system that is both efficient and extensible is a challenging task. In this article, we propose SFSS, a self-healing framework for SOA fault management. SFSS is predicting, identifying, and solving faults in SOAs. In SFSS, we identified a set of high-level exception handling strategies based on the QoS performances of different component services and the preferences articled by the service consumers. Multiple recovery plans are generated and evaluated according to the performance of the selected component services, and then we execute the best recovery plan. We assess the overall user dependence (i.e., the service is independent of other services) using the generated plan and the available invocation information of the component services. Due to the experiment results, the given technique enhances the service selection quality by choosing the services that have the highest score and betters the overall system performance. The experiment results indicate the applicability of SFSS and show improved performance in comparison to similar approaches.

EARRINGS: an efficient and accurate adapter trimmer entails no a priori adapter sequences

2021 ◽  
Author(s):  
Ting-Hsuan Wang ◽  
Cheng-Ching Huang ◽  
Jui-Hung Hung
Keyword(s):  
Open Source Software ◽  
Large Scale ◽  
A Priori ◽  
Supplementary Information ◽  
Supplementary Data ◽  
Comparable Accuracy ◽  
Meta Analyses ◽  
Next Generation Sequencing Ngs ◽  
Adapter Trimming ◽  
Generation Sequencing

Abstract Motivation Cross-sample comparisons or large-scale meta-analyses based on the next generation sequencing (NGS) involve replicable and universal data preprocessing, including removing adapter fragments in contaminated reads (i.e. adapter trimming). While modern adapter trimmers require users to provide candidate adapter sequences for each sample, which are sometimes unavailable or falsely documented in the repositories (such as GEO or SRA), large-scale meta-analyses are therefore jeopardized by suboptimal adapter trimming. Results Here we introduce a set of fast and accurate adapter detection and trimming algorithms that entail no a priori adapter sequences. These algorithms were implemented in modern C++ with SIMD and multithreading to accelerate its speed. Our experiments and benchmarks show that the implementation (i.e. EARRINGS), without being given any hint of adapter sequences, can reach comparable accuracy and higher throughput than that of existing adapter trimmers. EARRINGS is particularly useful in meta-analyses of a large batch of datasets and can be incorporated in any sequence analysis pipelines in all scales. Availability and implementation EARRINGS is open-source software and is available at https://github.com/jhhung/EARRINGS. Supplementary information Supplementary data are available at Bioinformatics online.

ACConv -- An Access Control Model for Conversational Web Services

2011 ◽  
Vol 5 (3) ◽  
pp. 1-33 ◽  
Author(s):  
Federica Paci ◽  
Massimo Mecella ◽  
Mourad Ouzzani ◽  
Elisa Bertino
Keyword(s):  
Web Services ◽  
Access Control ◽  
Control Model ◽  
Access Control Model

scholarly journals Web services access control architecture incorporating trust

2007 ◽  
Vol 17 (3) ◽  
pp. 291-305 ◽  
Author(s):  
Marijke Coetzee ◽  
J.H.P. Eloff
Keyword(s):  
Web Services ◽  
Access Control ◽  
Control Architecture
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