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A Model-driven Approach for Securing Software Architectures

A Model-driven Approach for Securing Software Architectures

引用

10th International Conference on Security and Cryptography (SECRYPT)

作者： Neri, Mario Arrigoni Guarnieri, Marco Magri, Eros Mutti, Simone Paraboschi, Stefano Univ Bergamo Dip Ingn Informat & Metodi Matemat Bergamo Italy Swiss Fed Inst Technol Inst Informat Secur Zurich Switzerland Comelit Grp SpA Comelit R&D Rovetta S Lorenzo Italy

ISBN: (纸本)9789897581311

Current IT systems consist usually of several components and services that communicate and exchange data over the Internet. they have security requirements that aim at avoiding information disclosure and at showing compliance with government regulations. In order to effectively handle the security management of complex IT systems, techniques are needed to help the security administrator in the design and configuration of the security architecture. We propose a model-driven security approach for the design and generation of concrete security configurations for software architectures. In our approach the system architect models the architecture of the system by means of UML class diagrams, and then the security administrator adds security requirements to the model by means of Security4UML, a UML profile. From the model enriched with security requirements, the concrete security configuration is derived in a semi-automated way. We present a tool that supports this model-driven approach, and a case study that involves a distributed multi-user meeting scheduler application.

关键词： access control Model-driven Security Security Policy Software Architectures

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Incorporate Sensor Data and Dynamic Modeling for Real Time control of Sewer Systems

Incorporate Sensor Data and Dynamic Modeling for Real Time C...

引用

10th IFIP WG 5.11 International symposium on Environmental Software Systems (ISESS)

作者： de Rooij, Erik van Heeringen, Klaas-Jan Deltares NL-2600 MH Delft Netherlands

ISBN: (纸本)9783642411502

We discuss how Delft-FEWS is applied to incorporate real-time sensor data and dynamic modeling to allow Real Time control (RTC) of three sewer systems in the area of the Hoeksche Waard, the Netherlands. the purpose of this project was to reduce sewerage spilling to the surface water by optimizing the available storage in the sewer systems. In this paper we will present how Delft-FEWS makes use of Simple Object access Protocol (SOAP) webservices to exchange real-time data with multiple sewer systems and their different Supervisory control and data acquisition (SCADA) systems. We will also explain how we combine this with dynamic models, allowing for central automatic control of multiple sewer systems.

关键词： Delft-FEWS Real Time control Webservices SOAP SCADA systems dynamic modeling Sewer Systems Sensor Web

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Towards a policy enforcement infrastructure for distributed usage control 12

Towards a policy enforcement infrastructure for distributed ...

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17th acm symposium on access control models and technologies, SacmAT'12

作者： Kelbert, Florian Pretschner, Alexander Karlsruhe Institute of Technology Am Fasanengarten 5 Karlsruhe Germany

ISBN: (纸本)9781450312950

Distributed usage control is concerned with how data may or may not be used after initial access to it has been granted and is therefore particularly important in distributed system environments. We present an application- and application-protocol-independent infrastructure that allows for the enforcement of usage control policies in a distributed environment. We instantiate the infrastructure for transferring files using FTP and for a scenario where smart meters are connected to a Facebook application. Copyright 2012 acm.

关键词： distributed usage control policy enforcement sticky policies security and privacy

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Encryption-enforced access control for an RFID Discovery Service 12

Encryption-enforced access control for an RFID Discovery Ser...

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17th acm symposium on access control models and technologies, SacmAT'12

作者： Kerschbaum, Florian Chaves, Leonardo Weiss Ferreira Department of Privacy and Data Security Technical University Dresden Germany SAP AG SAP Research Center Karlsruhe Germany

ISBN: (纸本)9781450312950

In this demonstration we present a novel encryption scheme for enforcing access control in a Discovery Service. A Discovery Service is a piece of software that allows one to "discover" item-level data which is stored in data repositories of different companies. Such data can be gathered with the help of Radio Frequency Identification or 2D bar codes. Our software allows the data owner to enforce access control on an item-level by managing the corresponding keys. Data remains confidential even against the provider of the Discovery Service. We present three ways of querying data and evaluate them with databases containing up to 50 million tuples. Copyright 2012 acm.

关键词： Radio frequency identification (RFID)

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A model-based approach to automated testing of access control policies 12

A model-based approach to automated testing of access contro...

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17th acm symposium on access control models and technologies, SacmAT'12

作者： Xu, Dianxiang thomas, Lijo Kent, Michael Mouelhi, Tejeddine Le Traon, Yves National Center for the Protection of the Financial Infrastructure Dakota State University Madison SD 57042 United States Interdisciplinary Centre for Security Reliability and Trust University of Luxembourg Campus Kirchberg L-1359 Luxembourg

ISBN: (纸本)9781450312950

access control policies in software systems can be implemented incorrectly for various reasons. this paper presents a model-based approach for automated testing of access control implementation. To feed the model-based testing process, test models are constructed by integrating declarative access control rules and contracts (preconditions and post-conditions) of the associated activities. the access control tests are generated from the test models to exercise the interactions of access control activities. Test executability is obtained through a mapping of the modeling elements to implementation constructs. the approach has been implemented in an industry-adopted test automation framework that supports the generation of test code in a variety of languages, such as Java, C, C++, C#, and HTML/Selenium IDE. the full model-based testing process has been applied to two systems implemented in Java. the effectiveness is evaluated in terms of access-control fault detection rate using mutation analysis of access control implementation. the experiments show that the model-based tests killed 99.7% of the mutants and the remaining mutants caused no policy violations. Copyright 2012 acm.

关键词： access control

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SCUTA: A server-side access control system for web applications 12

SCUTA: A server-side access control system for web applicati...

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17th acm symposium on access control models and technologies, SacmAT'12

作者： Tan, Xi Du, Wenliang Luo, Tongbo Soundararaj, Karthick D. Dept. of Electrical Engineering and Computer Science Syracuse University Syracuse NY United States

ISBN: (纸本)9781450312950

the Web is playing a very important role in our lives, and is becoming an essential element of the computing infrastructure. Unfortunately, its importance makes it the preferred target of attacks. Web-based vulnerabilities now outnumber traditional computer security concerns. A recent study shows that over 80 percent of web sites have had at least one serious vulnerability. We believe that the Web's problems, to a large degree, are caused by the inadequacy of its underlying access control systems. To reduce the number of vulnerabilities, it is essential to provide web applications with better access control models that can adequately address the protection needs of the current Web. As a part of the efforts to develop a better access control system for the Web, we focus on the server-side access control in this paper. We introduce a new concept called subsession, based on which, we have developed a ring-based access control system (called Scuta) for web servers. Scuta provides a fine-grained and backward-compatible access control mechanism for web applications. We have implemented Scuta in PHP, and have conducted comprehensive case studies to evaluate its benefits. Copyright 2012 acm.

关键词： Websites

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Practical risk aggregation in RBAC models 12

Practical risk aggregation in RBAC models

引用

17th acm symposium on access control models and technologies, SacmAT'12

作者： Chari, Suresh Lobo, Jorge Molloy, Ian IBM Research TJ Watson Hawthorne NY United States

ISBN: (纸本)9781450312950

this paper describes our system, built as part of a commercially available product, for inferring the risk in an RBAC policy model, i.e., the assignment of permissions to roles and roles to users. Our system implements a general model of risk based on any arbitrary set of properties of permissions and users. Our experience shows that fuzzy inferencing systems are best suited to capture how humans assign risk to such assignments. To implement fuzzy inferencing practically we need the axiom of monotonicity, i.e., risk can not decrease when more permissions are assigned to a role or when the role is assigned to fewer users. We describe the visualization component which administrators can use to infer aggregate risk in role assignments as well as drill down into which assignments are actually risky. Administrators can then use this knowledge to refactor roles and assignments. Copyright 2012 acm.

关键词： access control

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PlexC: A policy language for exposure control 12

PlexC: A policy language for exposure control

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17th acm symposium on access control models and technologies, SacmAT'12

作者： Le Gall, Yann Lee, Adam J. Kapadia, Apu Department of Computer Science University of Pittsburgh Pittsburgh PA United States School of Informatics and Computing Indiana University Bloomington Bloomington IN United States

ISBN: (纸本)9781450312950

With the widespread use of online social networks and mobile devices, it is not uncommon for people to continuously broadcast contextual information such as their current location or activity. these technologies present both new opportunities for social engagement and new risks to privacy, and traditional static 'write once' disclosure policies are not well suited for controlling aggregate exposure risks in the current technological landscape. therefore, we present PlexC, a new policy language designed for exposure control. We take advantage of several recent user studies to identify a set of language requirements and features, providing the expressive power to accommodate information sharing in dynamic environments. In our evaluation we show that PlexC can concisely express common policy idioms drawn from survey responses, in addition to more complex information sharing scenarios. Copyright 2012 acm.

关键词： Social networking (online)

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Analyzing temporal role based access control models 12

Analyzing temporal role based access control models

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17th acm symposium on access control models and technologies, SacmAT'12

作者： Uzun, Emre Atluri, Vijayalakshmi Sural, Shamik Vaidya, Jaideep Parlato, Gennaro Ferrara, Anna Lisa Madhusudan, P. Rutgers University United States Indian Institute of Technology India University of Southampton United Kingdom University of Bristol United Kingdom University of Illinois at Urbana-Champaign United States

ISBN: (纸本)9781450312950

Today, Role Based access control (RBAC) is the de facto model used for advanced access control, and is widely deployed in diverse enterprises of all sizes. Several extensions to the authorization as well as the administrative models for RBAC have been adopted in recent years. In this paper, we consider the temporal extension of RBAC (TRBAC), and develop safety analysis techniques for it. Safety analysis is essential for understanding the implications of security policies both at the stage of specification and modification. Towards this end, in this paper, we first define an administrative model for TRBAC. Our strategy for performing safety analysis is to appropriately decompose the TRBAC analysis problem into multiple subproblems similar to RBAC. Along with making the analysis simpler, this enables us to leverage and adapt existing analysis techniques developed for traditional RBAC. We have adapted and experimented with employing two state of the art analysis approaches developed for RBAC as well as tools developed for software testing. Our results show that our approach is both feasible and flexible. Copyright 2012 acm.

关键词： Software testing

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SecureBPMN: Modeling and enforcing access control requirements in business processes 12

SecureBPMN: Modeling and enforcing access control requiremen...

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17th acm symposium on access control models and technologies, SacmAT'12

作者： Brucker, Achim D. Hang, Isabelle Lückemeyer, Gero Ruparel, Raj SAP Research Vincenz-Priessnitz-Str. 1 76131 Karlsruhe Germany Hochschule für Technik Stuttgart Schellingstr. 24 70174 Stuttgart Germany

ISBN: (纸本)9781450312950

Modern enterprise systems have to comply to regulations such as Basel III resulting in complex security requirements. these requirements need to be modeled at design-time and enforced at runtime. Moreover, modern enterprise systems are often business-process driven, i.e., the system behavior is described as high-level business processes that are executed by a business process execution engine. Consequently, there is a need for an integrated and tool-supported methodology that allows for specifying and enforcing compliance and security requirements for business process-driven enterprise systems. In this paper, we present a tool chain supporting both the design-time modeling as well as the run-time enforcement of security requirements for business process-driven systems. Copyright 2012 acm.

关键词： access control

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