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检索条件"任意字段=10th ACM Symposium on Access Control Models and Technologies"

共 496 条记录，以下是161-170 订阅

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Multimodal interaction in process control rooms: Are we there yet? 16

Multimodal interaction in process control rooms: Are we ther...

引用

5th acm International symposium on Pervasive Displays, PerDis 2016

作者： Heimonen, Tomi Hakulinen, Jaakko Sharma, Sumita Turunen, Markku Lehtikunnas, Lauri Paunonen, Hannu University of Wisconsin - Stevens Point Stevens PointWI United States TAUCHI University of Tampere Finland Valmet Automation Tampere Finland

ISBN: (纸本)9781450343664

Although process control rooms are advanced digital environments with a multitude of desktop and large displays, there still exists a gap between the interaction technologies being employed in pervasive displays used in other settings and those used in control rooms. Previous research on large displays is extensively geared towards investigating social interaction in non-serious environments. the potential of employing multimodal interactive displays to support work and collaboration in process control rooms is underexplored. this paper explores modern control rooms as interactive collaborative environments and presents a multimodal prototype that promotes the users' freedom and flexibility of work through gestural and spoken interaction. the design of the prototype was informed by three feedback sessions and two user studies with various stakeholders. Our findings indicate multimodal interaction in process control rooms should (a) support the feeling of control and safety during the interaction, (b) enable efficient access to information provided by system from a distance, and (c) provide freedom and flexibility of use anywhere in the control room. © 2016 acm.

关键词： Process control

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Trust enhanced secure role-based access control on encrypted data in cloud (Abstract of keynote talk) 10th

Trust enhanced secure role-based access control on encrypted...

引用

10th IFIP WG 11.11 International Conference on Trust Management, IFIPTM 2016

作者： Varadharajan, Vijay Department of Computing Faculty of Science Macquarie University NSW2109 Australia

ISBN: (纸本)9783319413532

In this talk I will begin with a brief look at current trends in the technology scenery and some of the key security challenges that are impacting on business and society. In particular, on the one hand there have been tremendous developments in cyber technologies such as cloud, Big Data and Internet of technologies. then we will consider security and trust issues in cloud services and cloud data. In this talk, we will focus on policy based access to encrypted data in the cloud. We will present a new technique, Role based Encryption (RBE), which integrates cryptographic techniques with role based access control. the RBE scheme allows policies defined by data owners to be enforced on the encrypted data stored in public clouds. the cloud provider will not be able to see the data content if the provider is not given the appropriate role by the data owner. We will present a practical secure RBE based hybrid cloud storage architecture, which allows an organisation to store data securely in a public cloud, while maintaining the sensitive information related to the organisation’s structure in a private cloud. then we will consider trust issues in RBE based secure cloud data systems. We will discuss two types of trust models that assist (i) the data owners/users to evaluate the trust on the roles/role managers in the system as well as (ii) the role managers to evaluate the trust on the data owners/users for when deciding on role memberships. these models will take into account the impact of role hierarchy and inheritance on the trustworthiness of the roles and users. We will also consider practical application of the trust models and illustrate how the trust evaluations can help to reduce the risks and enhance the quality of decision making by data owners and role managers of the cloud storage services. © IFIP International Federation for Information Processing 2016.

关键词： Managers

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SacmAT 2014 - Proceedings of the 19th acm symposium on access control models and technologies

SACMAT 2014 - Proceedings of the 19th ACM Symposium on Acces...

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19th acm symposium on access control models and technologies, SacmAT 2014

ISBN: (纸本)9781450329392

the proceedings contain 22 papers. the topics discussed include: hardware-enhanced distributed access enforcement for role-based access control;an access control concept for novel automotive HMI systems;monitor placement for large-scale systems;anomaly detection and visualization in generative RBAC models;reduction of access control decisions;towards more usable information flow policies for contemporary operating systems;attribute based access control for APIs in spring security;comprehensive integrity protection for desktop Linux;game theoretic analysis of multiparty access control in online social networks;scalable and precise automated analysis of administrative temporal role-based access control;access control models for geo-social computing systems;limiting access to unintentionally leaked sensitive documents using malware signatures;and user-centric identity as a service-architecture for eIDs with selective attribute disclosure.

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Privacy and access control;How are these twoconcepts related? 15

Privacy and access control;How are these twoconcepts related...

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20th acm symposium on access control models and technologies, SacmAT 2015

作者： Squicciarini, Anna Yu, Ting College of Information Sciences and Technology Pennsylvania State University United States Qatar Computing Research Institute Doha Qatar

No abstract available.

ISBN: (纸本)9781450335560

No abstract available.

关键词： security access control privacy

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access control in Publicly Verifiable Outsourced Computation 15

Access control in Publicly Verifiable Outsourced Computation

引用

10th acm symposium on Information, Computer and Communications Security, ASIACCS 2015

作者： Alderman, James Janson, Christian Cid, Carlos Crampton, Jason Information Security Group Royal Holloway University of London Egham SurreyTW20 0EX United Kingdom

ISBN: (纸本)9781450332453

Publicly Verifiable Outsourced Computation (PVC) allows devices with restricted resources to delegate computations to more powerful external servers, and to verify the correctness of results. Whilst beneficial in many situations, this increases the visibility and availability of potentially sensitive data, so we may wish to limit the sets of entities that can view input data and results. Additionally, it is highly unlikely that all users have identical and uncontrolled access to all functionality within an organization. thus there is a need for access control mechanisms in PVC environments. In this work, we define a new framework for Publicly Verifiable Outsourced Computation with access control (PVCAC) and discuss the security models and forms of access control policies that are necessary in such environments. Copyright © 2015 acm.

关键词： access control

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Full-System Simulation of *** Multicore Architecture for Performance and Energy Exploration

Full-System Simulation of *** Multicore Architecture for Per...

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IEEE International symposium on Embedded Multicore Socs (MCSoC)

作者： Anastasiia Butko Florent Bruguier Abdoulaye Gamatié Gilles Sassatelli David Novo Lionel Torres Michel Robert Gilles Sassatelli University of Montpellier Montpellier France Communaute d'Universites et Etablissements Languedoc-Roussillon Universites Montpellier Languedoc-Roussillon FR

ISBN: (纸本)9781509035328

Single-ISA heterogeneous multicore processors have gained increasing popularity with the introduction of recent technologies such as ARM ***. these processors offer increased energy efficiency through combining low power in-order cores with high performance out-of-order cores. Efficiently exploiting this attractive feature requires careful management so as to meet the demands of targeted applications. In this paper, we explore the design of those architectures based on the ARM *** technology by modeling performance and power in gem5 and McPAT frameworks. Our models are validated w.r.t. the Samsung Exynos 5 Octa (5422) chip. We show average errors of 20% in execution time, 13% for power consumption and 24% for energy-to-solution.

关键词： Multicore processing Computational modeling Program processors Random access memory Linux Kernel

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Hard instances for verification problems in access control 15

Hard instances for verification problems in access control

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20th acm symposium on access control models and technologies, SacmAT 2015

作者： Mousavi, Nima Tripunitara, Mahesh Google Inc. Waterloo Canada ECE University of Waterloo Waterloo Canada

ISBN: (纸本)9781450335560

We address the generation and analysis of hard instances for verification problems in access control that are NP-hard. Given the customary assumption that P = NP, we know that such classes exist. We focus on a particular problem, the user-authorization query problem (UAQ) in Role-Based access control (RBAC). We show how to systematically generate hard instances for it. We then analyze what we call the structure of those hard instances. Our work brings the important aspect of systematic investigation of hard input classes to access control research.

关键词： Authorization

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A logical approach to restricting access in online social networks 15

A logical approach to restricting access in online social ne...

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20th acm symposium on access control models and technologies, SacmAT 2015

作者： Cramer, Marcos Pang, Jun Zhang, Yang University of Luxembourg Luxembourg

ISBN: (纸本)9781450335560

Nowadays in popular online social networks users can blacklist some of their friends in order to disallow them to access resources that other non-blacklisted friends may access. We identify three independent binary decisions to utilize users' blacklists in access control policies, resulting into eight access restrictions. We formally define these restrictions in a hybrid logic for relationship-based access control, and provide syntactical transformations to rewrite a hybrid logic access control formula when fixing an access restriction. this enables a flexible and user-friendly approach for restricting access in social networks. We develop efficient algorithms for enforcing a subset of access control policies with restrictions. the effectiveness of the access restrictions and the efficiency of our algorithms are evaluated on a Facebook dataset.

关键词： Social networking (online)

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Commune: Shared ownership in an agnostic cloud 15

Commune: Shared ownership in an agnostic cloud

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20th acm symposium on access control models and technologies, SacmAT 2015

作者： Soriente, Claudio Karame, Ghassan O. Ritzdorf, Hubert Marinovic, Srdjan Capkun, Srdjan ETH Zurich Switzerland NEC Laboratories Germany Wireless Registry Inc. United States

ISBN: (纸本)9781450335560

Cloud storage platforms promise a convenient way for users to share files and engage in collaborations, yet they require all files to have a single owner who unilaterally makes access control decisions. Existing clouds are, thus, agnostic to shared ownership. this can be a significant limitation in many collaborations because, for example, one owner can delete files and revoke access without consulting the other collaborators. In this paper, we first formally define a notion of shared ownership within a file access control model. We then propose a solution, called Commune, to the problem of distributed enforcement of shared ownership in agnostic clouds, so that access grants require the support of an agreed threshold of owners. Commune can be used in existing clouds without modifications to the platforms. We analyze the security of our solution and evaluate its performance through an implementation integrated with Amazon S3. © Copyright 2015 acm.

关键词： access control models

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Automated inference of access control policies For web applications 15

Automated inference of access control policies For web appli...

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20th acm symposium on access control models and technologies, SacmAT 2015

作者： Le, Ha thanh Nguyen, Cu D. Briand, Lionel Hourte, Benjamin University of Luxembourg Luxembourg Luxembourg HITEC Luxembourg S.A. LuxembourgL-1458 Luxembourg

ISBN: (纸本)9781450335560

In this paper, we present a novel, semi-automated approach to infer access control policies automatically for web-based applications. Our goal is to support the validation of implemented access control policies, even when they have not been clearly specified or documented. We use role-based access control as a reference model. Built on top of a suite of security tools, our approach automatically exercises a system under test and builds access spaces for a set of known users and roles. then, we apply a machine learning technique to infer access rules. Inconsistent rules are then analysed and fed back to the process for further testing and improvement. Finally, the inferred rules can be validated based on prespecified rules if they exist. Otherwise, the inferred rules are presented to human experts for validation and for detecting access control issues. We have evaluated our approach on two applications;one is open source while the other is a proprietary system built by our industry partner. the obtained results are very promising in terms of the quality of inferred rules and the access control vulnerabilities it helped detect. © Copyright 2015 acm.

关键词： access control

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