Guest Editorial: Security and Dependability in SOA and Business Processes

Damiani, Ernesto; Proctor, Seth; Singhal, Anoop

doi:10.1109/tsc.2011.56

Cited by 2 publications

(1 citation statement)

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“…Workflow security has become increasingly important and challenging in today's open service world [20], [6], [26], [10]. On one hand, a business process (workflow) can comprise numerous autonomous services that are exposed by different distributed service providers [3].…”

Section: Introductionmentioning

confidence: 99%

Satisfiability Analysis of Workflows with Control-Flow Patterns and Authorization Constraints

Yang

Xie

Ray

et al. 2014

IEEE Trans. Serv. Comput.

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Abstract-Workflow security has become increasingly important and challenging in today's open service world. While much research has been conducted on various security issues of workflow systems, the workflow satisfiability problem, which asks whether a set of users together can complete a workflow, is recently identified as an important research problem that needs more investigation. In this paper, we study the computational complexity of the problem along two directions: one is by considering either one path or all paths of a workflow, and the other is by considering the possible patterns in a workflow. We have shown that the general workflow satisfiability analysis problem is intractable. This result motivates us to consider restrictions on workflow control-flow patterns and access control policies, and to identify tractable cases of practical interest.

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Section: Introductionmentioning

confidence: 99%

Satisfiability Analysis of Workflows with Control-Flow Patterns and Authorization Constraints

Yang

Xie

Ray

et al. 2014

IEEE Trans. Serv. Comput.

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Composite web QoS with workflow conditional pathways using bounded sets

Elfawal-Mansour

Mansour

Dillon

2012

SOCA

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International audienceIn our previouswork (Dillon and Mansour 2009), a stochastic reliability model of atomic web services was proposed. Using the well-known classic two-state bounded set technique, we developed a service-oriented model that dynamically calculates the reliability of composite web services with rollback recovery (Mansour and Dillon in IEEE Trans ServComput 4(4), 2011). In order to improve theQuality of Service, fault tolerance techniques have been introduced using recovery block adaptation. Our workflow was based on series-parallel structures that constitute parts of existing structures. It is worth mentioning that major serviceoriented systems contain larger and more complex structures than the simple series and parallel ones. This is a limitation in our previous approach. In order to consider more realistic service-oriented systems, other main structures, such as AND, XOR and Loop, should be included into our model. In this article, our previous structures are generalized to include AND, XOR and Loops. In addition to generalized structures, we extended the existing two-state bounded set technique to include three-state systems. This extension was especially motivated by XOR-based structures. A comparative study between bounded set techniques and a new stochastic model is also presented. Our simulation results accurately reflect the performance of the new proposed model and confirm our theoretical studies. Furthermore, Monte Carlos simulations were performed and the results obtained clearly validate our stochastic model

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Guest Editorial: Security and Dependability in SOA and Business Processes

Cited by 2 publications

References 0 publications

Satisfiability Analysis of Workflows with Control-Flow Patterns and Authorization Constraints

Satisfiability Analysis of Workflows with Control-Flow Patterns and Authorization Constraints

Composite web QoS with workflow conditional pathways using bounded sets

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