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47 篇 会议

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检索条件"任意字段=Proceedings of the 23nd ACM on Symposium on Access Control Models and Technologies"

共 47 条记录，以下是1-10 订阅

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User interface models for the cloud 10

User interface models for the cloud

引用

Adjunct proceedings of the 23nd annual acm symposium on User interface software and technology

作者： Pham, Hubert MIT CSAIL 32 Vassar Street Cambridge MA 02139 United States

ISBN: (纸本)9781605588438

The current desktop metaphor is unsuitable for the coming age of cloud-based applications. The desktop was developed in an era that was focused on local resources, and consequently its gestures, semantics, and security model reflect heavy reliance on hierarchy and physical locations. This paper proposes a new user interface model that accounts for cloud applications, incorporating representations of people and new gestures for sharing and access, while minimizing the prominence of location. The model's key feature is a lightweight mechanism to group objects for resource organization, sharing, and access control, towards the goal of providing simple semantics for a wide range of tasks, while also achieving security through greater usability.

关键词： access control

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Poster: Constrained Policy Mining in Attribute Based access control 22

Poster: Constrained Policy Mining in Attribute Based Access ...

引用

22nd acm symposium on access control models and technologies (SacmAT)

作者： Gautam, Mayank Jha, Sadhana Sural, Shamik Vaidya, Jaideep Atluri, Vijayalakshmi IIT Kharagpur Kharagpur W Bengal India Rutgers State Univ New Brunswick NJ USA

ISBN: (纸本)9781450347020

In practical access control systems, it is important to enforce an upper bound on the time taken to respond to an access request. This response time is directly influenced by the size (often called the weight) of each of the underlying access control rules. We present a constrained policy mining algorithm which takes an access control matrix as input and generates a set of attribute based access control (ABAC) rules, such that the weight of each rule is not more than a specified value and the sum of weights of all the rules is minimized. Our initial experiments show encouraging results.

关键词： ABAC Policy mining Constraint Weight

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access control Enforcement within MQTT-based Internet of Things Ecosystems 18

Access Control Enforcement within MQTT-based Internet of Thi...

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23rd acm symposium on access control models and technologies (SacmAT)

作者： Colombo, Pietro Ferrari, Elena Univ Insubria DiSTA Varese Italy

ISBN: (纸本)9781450356664

Confidentiality and privacy of data managed by IoT ecosystems is becoming a primary concern. This paper targets the design of a general access control enforcement mechanism for MQTT-based IoT ecosystems. The proposed approach is presented with ABAC, but other access control models can be similarly supported. The solution is based on an enforcement monitor that has been designed to operate as a proxy between MQTT clients and an MQTT server. The monitor enforces access control constraints by intercepting and possibly manipulating the flow of exchanged MQTT control packets. Early experimental evaluations have overall shown low enforcement overhead.

关键词： access control Internet of Things MQTT

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access control in the Era of Big Data: State of the Art and Research Directions 18

Access Control in the Era of Big Data: State of the Art and ...

引用

23rd acm symposium on access control models and technologies (SacmAT)

作者： Colombo, Pietro Ferrari, Elena Univ Insubria DiSTA Varese Italy

ISBN: (纸本)9781450356664

Data security and privacy issues are magnified by the volume, the variety, and the velocity of Big Data and by the lack, up to now, of a standard data model and related data manipulation language. In this paper, we focus on one of the key data security services, that is, access control, by highlighting the differences with traditional data management systems and describing a set of requirements that any access control solution for Big Data platforms may fulfill. We then describe the state of the art and discuss open research issues.

关键词： Big Data access control Privacy NoSQL Data Management Systems

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proceedings of Eighth acm symposium on access control models and technologies

Proceedings of Eighth ACM Symposium on Access Control Models...

引用

proceedings of Eighth acm symposium on access control models and technologies

The proceedings contains 23 papers. Topics discussed include enterprise role administration, contraints, role based access control for collaborative environments, access control models and mechanisms, role engineering... 详细信息

关键词： Security of data

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Security Analysis and Legal Compliance Checking for the Design of Privacy-friendly Information Systems 22

Security Analysis and Legal Compliance Checking for the Desi...

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22nd acm symposium on access control models and technologies (SacmAT)

作者： Guarda, Paolo Ranise, Silvio Siswantoro, Hari Univ Trento Fac Law Trento Italy FBK Irst Secur & Trust Trento Italy Univ Trento DISI Trento Italy

ISBN: (纸本)9781450347020

Nowadays, most of business practices involve personal data processing of customers and employees. This is strictly regulated by legislation to protect the rights of the data subject. Enforcing regulation into enterprise information system is a non-trivial task that requires an interdisciplinary approach. This paper presents a declarative framework to support the specification of information system designs, purpose-aware access control policies, and the legal requirements derived from the European Data Protection Directive. This allows for compliance checking via a reduction to policy refinement that is supported by available automated tools. We briefly discuss the results of the compliance analysis with a prototype tool on a simple but realistic scenario about the processing of personal data to produce salary slips of employees in an Italian organization.

关键词： EU DPD Legal compliance access control Policies

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Mining Relationship-Based access control Policies 22

Mining Relationship-Based Access Control Policies

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22nd acm symposium on access control models and technologies (SacmAT)

作者： Thang Bui Stoller, Scott D. Li, Jiajie SUNY Stony Brook Stony Brook NY 11794 USA

ISBN: (纸本)9781450347020

Relationship-based access control (ReBAC) provides a high level of expressiveness and flexibility that promotes security and information sharing. We formulate ReBAC as an object-oriented extension of attribute-based access control (ABAC) in which relationships are expressed using fields that refer to other objects, and path expressions are used to follow chains of relationships between objects. ReBAC policy mining algorithms have potential to significantly reduce the cost of migration from legacy access control systems to ReBAC, by partially automating the development of a ReBAC policy from an existing access control policy and attribute data. This paper presents an algorithm for mining ReBAC policies from access control lists (ACLs) and attribute data represented as an object model, and an evaluation of the algorithm on four sample policies and two large case studies. Our algorithm can be adapted to mine ReBAC policies from access logs and object models. It is the first algorithm for these problems.

关键词： relationship-based access control attribute-based access control policy mining

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Poster: Reactive access control Systems 23

Poster: Reactive Access Control Systems

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23rd acm symposium on access control models and technologies (SacmAT)

作者： Davari, Maryam Bertino, Elisa Purdue Univ W Lafayette IN 47907 USA

ISBN: (纸本)9781450356664

In context-aware applications, user's access privileges rely on both user's identity and context. access control rules are usually statically defined while contexts and the system state can change dynamically. Changes in contexts can result in service disruptions. To address this issue, this poster proposes a reactive access control system that associates contingency plans with access control rules. Risk scores are also associated with actions part of the contingency plans. Such risks are estimated by using fuzzy inference. Our approach is cast into the XacmL reference architecture.

关键词： Context-aware applications reactive access control system contingency plan risk Fuzzy inference XacmL

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Mining Positive and Negative Attribute-Based access control Policy Rules 18

Mining Positive and Negative Attribute-Based Access Control ...

引用

23rd acm symposium on access control models and technologies (SacmAT)

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

ISBN: (纸本)9781450356664

Mining access control policies can reduce the burden of adopting more modern access control models by automating the process of generating policies based on existing authorization information in a system. Previous work in this area has focused on mining positive authorizations only. That includes the literature on mining role-based access control policies (which are naturally about positive authorization) and even more recent work on mining attribute-based access control (ABAC) policies. However, various theoretical access control models (including ABAC), specification standards (such as XacmL), and implementations (such as operating systems and databases) support negative authorization as well as positive authorization. In this paper, we propose a novel approach to mine ABAC policies that may contain both positive and negative authorization rules. We evaluate our approach using two different policies in terms of correctness, quality of rules (conciseness), and time. We show that while achieving the new goal of supporting negative authorizations, our proposed algorithm outperforms existing approach to ABAC mining in terms of time.

关键词： attribute-based access control policy mining negative authorization authorization conflicts

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Poster: Using Gini Impurity to Mine Attribute-based access control Policies with Environment Attributes 23

Poster: Using Gini Impurity to Mine Attribute-based Access C...

引用

23rd acm symposium on access control models and technologies (SacmAT)

作者： Das, Saptarshi Sural, Shamik Vaidya, Jaideep Atluri, Vijayalakshmi IIT Kharagpur Kharagpur W Bengal India Rutgers State Univ New Brunswick NJ USA

ISBN: (纸本)9781450356664

In Attribute-based access control (ABAC) systems, utilizing environment attributes along with the subject and object attributes introduces a dynamic nature to the access decisions. The inclusion of environment attributes helps in achieving a more fine-grained access control. In this paper, we present an ABAC policy mining algorithm that considers the environment attributes and their associated values while forming the rules. Furthermore, we use gini impurity to form the rules. This helps to minimize the number of rules in the generated policy. The experimental evaluation shows that our approach is quite effective in practice.

关键词： ABAC Policy mining Environment attributes Gini impurity

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