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WiP: AABAC - Automated Attribute Based access control for Genomics Data 22

WiP: AABAC - Automated Attribute Based Access Control for Ge...

引用

27th acm symposium on access control models and technologies (SacmAT)

作者： Reddick, David Presley, Justin Feltus, Frank Alex Shannigrahi, Susmit Tennessee Technol Univ Cookeville TN 38505 USA Clemson Univ Clemson SC USA

ISBN: (纸本)9781450393577

the COVID-19 crisis and the subsequent vaccine development have demonstrated the potential of cutting-edge genomics research. However, the privacy of these sensitive pieces of information is an area of significant concern for genomics researchers. the current security models make it difficult to create flexible, automated, and secure data-sharing frameworks. these models also increase the complexity of adding or revoking access. In this work, we investigate an automated attribute-based access control (AABAC) model for genomics data over Named Data Networking (NDN). AABAC secures the data itself rather than the storage location or transmission channel, provides automated data invalidation, and automates key retrieval and data validation while maintaining the ability to control access. When combined with NDN, we show that AABAC offers a secure and flexible access control framework.

关键词： Named Data Networking Genomics access control CP-ABE

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GreenSight: IoT-Based Greenhouse Monitoring System 14

GreenSight: IoT-Based Greenhouse Monitoring System

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14th symposium on Computer Applications & Industrial Electronics (ISCAIE)

作者： Fabian, Charles Bryan R. Sumalinog, Jerson S. Vicente, Paul John S. Romasanta, Joan Katherine N. NU Dasmarinas Natl Univ Philippines Manila Philippines

ISBN: (纸本)9798350348798;9798350348804

Greenhouse agriculture has emerged as a critical component in addressing global food security challenges, experiencing rapid growth and technological integration in recent years. this paper presents GreenSight, an IoT-based automated greenhouse monitoring system designed to optimize plant growth conditions while enhancing operational efficiency. Leveraging advanced technologies such as the NodeMCU ESP8266 microcontroller and DHT22 sensor, GreenSight facilitates real-time environmental monitoring and control within the greenhouse environment. the system incorporates actuators including SG90 servo motors, 9V DC motors, and mist atomizers to regulate atmospheric conditions tailored to diverse plant species' requirements. Additionally, a user-friendly Android application enables remote access and configuration. Ten (10) experts specializing in information technology and computer engineering assessed the prototype using ISO 9126 evaluation criteria. the Likert Scale was employed for interpretation. According to the evaluation, the project attained an overall mean of 3.32, indicating that it satisfies requirements concerning functionality, reliability, efficiency, usability, maintainability, and portability.

关键词： Greenhouse agriculture IoT automated monitoring system NodeMCU ESP8266 DHT22 sensor environmental control smart farming Android application sustainable agriculture

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Higher-Order Relationship-Based access control: A Temporal Instantiation with IoT Applications 22

Higher-Order Relationship-Based Access Control: A Temporal I...

引用

27th acm symposium on access control models and technologies (SacmAT)

作者： Arora, Chahal Rizvi, Syed Zain R. Fong, Philip W. L. Univ Calgary Calgary AB Canada

ISBN: (纸本)9781450393577

Cyberphysical systems involve connected devices that are physically embedded. these devices enter into transient relationships with one another and with the environment. We propose an access control model, HO(T)-ReBAC, for facilitating access control in such dynamic environments. Specifically, HO(T)-ReBAC bases its authorization decisions on the history of relationship changes. We demonstrate the usefulness of this model in a case study on a Medical Internet-of-things application. We extend a recently proposed graph matching algorithm to handle temporality in our model, thereby yielding an efficient authorization mechanism, the performance of which has been evaluated empirically. this model is the first instantiation of a general idea, Higher-Order Relationship-Based access control, that we have been developing.

关键词： access control model Relationship-Based access control transient relationship temporality Allen relation policy language graph matching graph database Constraint Satisfaction Problem

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WiP: Metamodel for Continuous Authorisation and Usage control 22

WiP: Metamodel for Continuous Authorisation and Usage Contro...

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27th acm symposium on access control models and technologies (SacmAT)

作者： Hariri, Ali Ibrahim, Amjad Dimitrakos, theo Crispo, Bruno Huawei Technol Duesseldorf GmbH German Res Ctr Munich Germany Univ Trento Dept Informat Engn & Comp Sci Trento Italy Univ Kent Sch Comp Canterbury Kent England

ISBN: (纸本)9781450393577

access control has been traditionally used to protect data and privacy. Traditional access control models (e.g., ABAC, RBAC) cannot meet modern security requirements as technologies spread over heterogeneous and dynamic environments that need continuous monitoring. Modern models such as Usage control (UCON) introduced the concept of continuous authorisation that has a lifecycle consisting of a series of phases through which the authorisation passes during its lifetime. However, such models assume a fixed lifecycle for all authorisations, so they cannot satisfy emerging technologies (e.g., smart vehicles, zero-trust, data flow), which require various and fine-grained lifecycles. Researchers have extended existing models to meet such requirements, but all solutions remain restrictive, as they are specially tailored for specific use-cases. In this paper, we propose an extensible model for continuous authorisations and usage control. the model enables its users to customise and dynamically configure the authorisation lifecycle as required by the use-case. this adds a layer of abstraction, forming a metamodel that can be instantiated into different flavours of continuous authorisation models, each addressing specific requirements. We also show that the authorisation lifecycle can be modelled as Deterministic Finite Automaton (DFA) and expressed in a structured language used by an evaluation engine to dynamically enact and manage the lifecycle. We layout the building blocks of the proposed metamodel and devise future research directions.

关键词： UCON Usage control Continuous Authorisation Authorisation Lifecycle Extensible access control

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Poster: Toward Zero-Trust Path-Aware access control 22

Poster: Toward Zero-Trust Path-Aware Access Control

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27th acm symposium on access control models and technologies (SacmAT)

作者： Seaton, Joshua H. Hounsinou, Sena Wood, Timothy Xu, Shouhuai Brown, Philip N. Bloom, Gedare Univ Colorado Colorado Springs Colorado Springs CO 80918 USA George Washington Univ Washington DC USA

ISBN: (纸本)9781450393577

In this poster, we introduce path-aware risk scores for access control (PARSAC), a novel context-sensitive technique to enrich access requests with risk scoring of the path taken by those requests between the authenticated user and the resources they access. these path-aware risk scores enable another layer of security for traditional access control systems that addresses the need for fine-grained monitoring and enforcement within a zero-trust architecture. We define rules for general functions that can be used to determine risk and instantiate a specific approach to calculate path risk scores. We evaluate our approach with realistic network graphs;PARSAC finds more paths with lower risk when compared with traditional routing algorithms that select the shortest path.

关键词： access control zero-trust path-aware networking

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Modeling and Analysis of Latencies in Multi-User, Multi-RAT Edge Computing 19

Modeling and Analysis of Latencies in Multi-User, Multi-RAT ...

引用

19th acm International symposium on QoS and Security for Wireless and Mobile Networks (Q2SWinet)

作者： Balaji, Rushabha Mehta, Neelesh B. Singh, Chandramani Univ Calif San Diego Elect & Comp Engn La Jolla CA 92093 USA Indian Inst Sci ECE Bengaluru India Indian Inst Sci Elect Syst Engn Bengaluru India

ISBN: (纸本)9798400703683

Multi-access edge computing enables resource-constrained handsets to offload their tasks to edge servers through multiple radio access technologies (RATs). However, RATs such as cellular and wireless local area network (WLAN) have different access protocols, throughputs, and latencies. We present novel models for accurate analysis of the average task computation delay, accounting for the physical and media access control layer throughputs and latencies. Our analysis considers the uplink latency encountered in offloading tasks to edge servers and the downlink latency in downloading completed tasks from the server to the users. It accounts for the contention-based channel access in a WLAN, in which the number of users that contend is a random process, and the orthogonal channelization based access of a cellular network. We show that WLAN contention delays and their variability have a significant impact on the overall delay. through a tractable probabilistic offloading policy, we bring out the trade-offs between choosing the different RATs. We also benchmark the performance of this policy against an upper confidence bound (UCB)-based dynamic offloading policy.

关键词： Multi-access edge computing WLAN cellular network renewal theory fixed-point analysis

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Effective Evaluation of Relationship-Based access control Policy Mining 22

Effective Evaluation of Relationship-Based Access Control Po...

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27th acm symposium on access control models and technologies (SacmAT)

作者： Iyer, Padmavathi Masoumzadeh, Amirreza SUNY Albany Albany NY 12222 USA

ISBN: (纸本)9781450393577

Mining algorithms for relationship-based access control policies produce policies composed of relationship-based patterns that justify the input authorizations according to a given system graph. the correct functioning of a policy mining algorithm is typically tested based on experimental evaluations, in each of which the miner is presented with a set of authorizations and a system graph, and is expected to produce the corresponding ground truth policy. In this paper, we propose formal properties that must exist between the system graph and the ground truth policy in an evaluation test so that the miner is challenged to produce the exact ground truth policy. We show that failure to verify these properties in the experiment leads to inadequate evaluation, i.e., not truly testing whether the miner can handle the complexity of the ground truth policy. We also argue that following these properties would provide a computational advantage in the evaluations. We propose algorithms to identify and correct violations of these properties in system graphs. We also present our observations regarding these properties and their enforcement using a set of experimental studies.

关键词： policy mining relationship-based access control evaluation mining evaluation case synthetic test generation

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the Secrecy Resilience of access control Policies and Its Application to Role Mining 22

The Secrecy Resilience of Access Control Policies and Its Ap...

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27th acm symposium on access control models and technologies (SacmAT)

作者： Guo, Qiang Tripunitara, Mahesh BMO Financial Grp Toronto ON Canada Univ Waterloo ECE Waterloo ON Canada Univ Waterloo Waterloo ON Canada

ISBN: (纸本)9781450393577

We propose a notion that we call the secrecy resilience of an access control policy that, to our knowledge, has not been explored in prior work. We seek to capture with this notion the property inherent to an access control policy that measures its resistance to disclosure. We motivate and then propose a definition for secrecy resilience that is based on the notion of entropy from information theory. We focus on policies expressed in Role-Based access control (RBAC), and contrast RBAC from the access matrix from the standpoint of secrecy resilience. We observe that similar to other objectives such as the minimization of the number of roles, an RBAC policy with the best secrecy resilience can be a desirable objective of bottom-up role-mining, with which we seek to compute an RBAC policy given as input an access matrix. We have carried out an empirical assessment of several role-mining algorithms from the standpoint of secrecy resilience for two underlying distribution-events pairs each of which captures a kind of best-case from the standpoint of a defender. Towards carrying out the empirical assessment, we make an additional contribution to role-mining: we propose new reductions for the two problems of minimizing the number of roles and the number of edges, and discuss the manner in which our reductions are superior to reductions in existing work.

关键词： secrecy resilience role-based access control role mining

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A Study of Application Sandbox Policies in Linux 22

A Study of Application Sandbox Policies in Linux

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27th acm symposium on access control models and technologies (SacmAT)

作者： Dunlap, Trevor Enck, William Reaves, Bradley North Carolina State Univ Raleigh NC 27695 USA

ISBN: (纸本)9781450393577

Desktop operating systems, including macOS, Windows 10, and Linux, are adopting the application-based security model pervasive in mobile platforms. In Linux, this transition is part of the movement towards two distribution-independent application platforms: Flatpak and Snap. this paper provides the first analysis of sandbox policies defined for Flatpak and Snap applications, covering 283 applications contained in both platforms. First, we find that 90.1% of Snaps and 58.3% of Flatpak applications studied are contained by tamperproof sandboxes. Further, we find evidence that package maintainers actively attempt to define least-privilege application policies. However, defining policy is difficult and error-prone. When studying the set of matching applications that appear in both Flatpak and Snap app stores, we frequently found policy mismatches: e.g., the Flatpak version has a broad privilege (e.g., file access) that the Snap version does not, or vice versa. this work provides confidence that Flatpak and Snap improve Linux platform security while highlighting opportunities for improvement.

关键词： access control sandbox policy linux applications

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BlueSky: Combining Task Planning and Activity-Centric access control for Assistive Humanoid Robots 22

BlueSky: Combining Task Planning and Activity-Centric Access...

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27th acm symposium on access control models and technologies (SacmAT)

作者： Bayreuther, Saskia Jacob, Florian Grotz, Markus Kartmann, Rainer Peller-Konrad, Fabian Paus, Fabian Hartenstein, Hannes Asfour, Tamim KIT Karlsruhe Germany

ISBN: (纸本)9781450393577

In the not too distant future, assistive humanoid robots will provide versatile assistance for coping with everyday life. In their interactions with humans, not only safety, but also security and privacy issues need to be considered. In this Blue Sky paper, we therefore argue that it is time to bring task planning and execution as a well-established field of robotics with access and usage control in the field of security and privacy closer together. In particular, the recently proposed activity-based view on access and usage control [8] provides a promising approach to bridge the gap between these two perspectives. We argue that humanoid robots provide for specific challenges due to their task-universality and their use in both, private and public spaces. Furthermore, they are socially connected to various parties and require policy creation at runtime due to learning. We contribute first attempts on the architecture and enforcement layer as well as on joint modeling, and discuss challenges and a research roadmap also for the policy and objectives layer. We conclude that the underlying combination of decentralized systems' and smart environments' research aspects provides for a rich source of challenges that need to be addressed on the road to deployment.

关键词： access control usage control robot task planning humanoid assistance robotics

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