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检索条件"任意字段=Proceedings of the Fifteenth ACM Conference on Data and Application Security and Privacy"

共 557 条记录，以下是271-280 订阅

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SecuPAN: A security Scheme to Mitigate Fragmentation-Based Network Attacks in 6LoWPAN 18

SecuPAN: A Security Scheme to Mitigate Fragmentation-Based N...

引用

8th acm conference on data and application security and privacy (CODASPY)

作者： Hossain, Mahmud Karim, Yasser Hasan, Ragib Univ Alabama Birmingham Dept Comp Sci SECRETLab Birmingham AL 35294 USA

ISBN: (纸本)9781450356329

6LoWPAN is a widely used protocol for communication over IPV6 Low-power Wireless Personal Area Networks. Unfortunately, the 6LoWPAN packet fragmentation mechanism possesses vulnerabilities that adversaries can exploit to perform network attacks. Lack of fragment authentication, payload integrity verification, and sender IP address validation lead to fabrication, duplication, and impersonation attacks. Moreover, adversaries can abuse the poor reassembly buffer management technique of the 6LoWPAN layer to perform buffer exhaustion and selective forwarding attacks. In this paper, we propose SecuPAN - a security scheme for mitigating fragmentation-based network attacks in 6LoWPAN networks and devices. We propose a Message Authentication Code based per-fragment integrity and authenticity verification scheme to defend against fabrication and duplication attacks. We also present a mechanism for computing datagram-tag and IPv6 address cryptographically to mitigate impersonation attacks. Additionally, our reputation-based buffer management scheme protects 6LoWPAN devices from buffer reservation attacks. We provide an extensive security analysis of SecuPAN to demonstrate that SecuPAN is secure against strong adversarial scenarios. We also implemented a prototype of SecuPAN on Contiki enabled IoT devices and provided a performance analysis of our proposed scheme.

关键词： Fragmentation security Service 6LoWPAN Threat Attack Adversary Internet of Things

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BlockChain for IoT security and Management: Current Prospects, Challenges and Future Directions 5

BlockChain for IoT Security and Management: Current Prospect...

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5th International conference on Networking, Systems and security (NSysS)

作者： Roy, Shanto Ashaduzzaman, Md. Hassan, Mehedi Chowdhury, Arnab Rahman Green Univ Bangladesh Dept Comp Sci & Engn Dhaka 1207 Bangladesh

ISBN: (纸本)9781728113241

The paper presents an in detailed case study of integrating BlockChain (BC) in IoT ecosystems in order to achieve security and privacy. Since the use in cryptocurrency, BlockChain has gained tremendous attraction due to the versatile application prospects it raises. As internet of things (IoT) is emerging towards the smart city requirements, device or data security seems to be a major concern. Therefore, BlockChain based decentralized and distributed system can meet the privacy preserving management in IoT ecosystems. In this paper, we discuss the necessity of utilizing BlockChain for IoT security, privacy, management. We present a literature overview of current progresses and security enhancement in sensor networks using BlockChain;their scope, prospects and limitations as well. Finally, we suggest some future directions to indicate further areas of improvement.

关键词： BlockChain IoT security privacy Authentication

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SCLib: A Practical and Lightweight Defense against Component Hijacking in Android applications 18

SCLib: A Practical and Lightweight Defense against Component...

引用

8th acm conference on data and application security and privacy (CODASPY)

作者： Wu, Daoyuan Cheng, Yao Gao, Debin Li, Yingjiu Deng, Robert H. Singapore Management Univ Sch Informat Syst Singapore Singapore ASTAR Inst Infocomm Res Singapore Singapore Singapore Management Univ Singapore Singapore

ISBN: (纸本)9781450356329

Cross-app collaboration via inter-component communication is a fundamental mechanism on Android. Although it brings the benefits such as functionality reuse and data sharing, a threat called component hijacking is also introduced. By hijacking a vulnerable component in victim apps, an attack app can escalate its privilege for operations originally prohibited. Many prior studies have been performed to understand and mitigate this issue, but no defense is being deployed in the wild, largely due to the deployment difficulties and performance concerns. In this paper we present SCLib, a secure component library that performs in-app mandatory access control on behalf of app components. It does not require firmware modification or app repackaging as in previous works. The library-based nature also makes SCLib more accessible to app developers, and enables them produce secure components in the first place over fragmented Android devices. As a proof of concept, we design six mandatory policies and overcome unique implementation challenges to mitigate attacks originated from both system weaknesses and common developer mistakes. Our evaluation using ten high-profile open source apps shows that SCLib can protect their 35 risky components with negligible code footprint (less than 0.3% stub code) and nearly no slowdown to normal intra-app communication. The worst-case performance overhead is only about 5%.

关键词： android security mobile security component hijacking

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A Linear Distinguisher and its application for Analyzing privacy-Preserving Transformation Used in Verifiable (Outsourced) Computation 18

A Linear Distinguisher and its Application for Analyzing Pri...

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13th acm Asia conference on Information, Computer and Communications security (ASIACCS)

作者： Zhao, Liang Chen, Liqun Sichuan Univ Coll Cybersecur Chengdu Sichuan Peoples R China Univ Surrey Surrey Ctr Cyber Secur Guildford Surrey England

ISBN: (纸本)9781450355766

A distinguisher is employed by an adversary to explore the privacy property of a cryptographic primitive. If a cryptographic primitive is said to be private, there is no distinguisher algorithm that can be used by an adversary to distinguish the encodings generated by this primitive with non-negligible advantage. Recently, two privacy-preserving matrix transformations first proposed by Salinas et al. have been widely used to achieve the matrix-related verifiable (outsourced) computation in data protection. Salinas et al. proved that these transformations are private (in terms of indistinguishability). In this paper, we first propose the concept of a linear distinguisher and two constructions of the linear distinguisher algorithms. Then, we take those two matrix transformations (including Salinas et al.'s original work and Yu et al.'s modification) as example targets and analyze their privacy property when our linear distinguisher algorithms are employed by the adversaries. The results show that those transformations are not private even against passive eavesdropping.

关键词： privacy-preserving verifiable (outsourced) computation privacy analysis Ciphertext-only attack Indistinguishability

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Trust based security Solution for Internet of Things Healthcare Solution: An End-to-End Trustworthy Architecture 18

Trust based Security Solution for Internet of Things Healthc...

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acm International Joint conference on Pervasive and Ubiquitous Computing / acm International Symposium on Wearable Computers (UbiComp/ISWC)

作者： Jaigirdar, Fariha Tasmin Monash Univ Fac Informat Technol Melbourne Vic Australia

ISBN: (纸本)9781450359665

With the vision of building "A Smart World", Internet of Things (IoT) plays a crucial role where users, computing systems and objects with sensing and actuating capabilities cooperate with unparalleled convenience. Among many applications of IoT, healthcare is the most emerging in today's scenario, as new technological advancement creates opportunity for early detection of illnesses, quick decision generation and even aftercare monitoring. Nowadays, it has become a reality for many patients to be monitored remotely, overcoming traditional logistical obstacles. However, these e-health applications increase the concerns of security, privacy, and integrity of medical data. For secured transmission in IoT healthcare, data that has been gathered from sensors in a patient's body area network needs to be sent to the end user and might need to be aggregated, visualized and/or evaluated before being presented. Here, trust is critical. Therefore, an end-to-end trustworthy system architecture can guarantee the reliable transmission of a patient's data and confirms the success of IoT Healthcare application.

关键词： Internet of Things Healthcare Trust

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CSP & Co. Can Save Us from a Rogue Cross-Origin Storage Browser Network! But for How Long? 18

CSP & Co. Can Save Us from a Rogue Cross-Origin Storage Brow...

引用

8th acm conference on data and application security and privacy (CODASPY)

作者： Rodriguez, Juan D. Parra Posegga, Joachim Univ Passau Passau Germany

ISBN: (纸本)9781450356329

We introduce a new browser abuse scenario where an attacker uses local storage capabilities without the website's visitor knowledge to create a network of browsers for persistent storage and distribution of arbitrary data. We describe how security-aware users can use mechanisms such as the Content security Policy (CSP), sandboxing, and third-party tracking protection, i.e., CSP & Company, to limit the network's effectiveness. From another point of view, we also show that the upcoming Suborigin standard can inadvertently thwart existing countermeasures, if it is adopted.

关键词： Web security WebRTC PostMessage Browser security Content security Policy Suborigins Parasitic Computing

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Biometric data transformation for cryptographic domains and its application: poster 19

Biometric data transformation for cryptographic domains and ...

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proceedings of the 12th conference on security and privacy in Wireless and Mobile Networks

作者： Shoukat Ali Koray Karabina Emrah Karagoz Florida Atlantic University

ISBN: (纸本)9781450367264

A large class of biometric template protection algorithms assume that feature vectors are integer valued. However, biometric data is generally represented through real-valued feature vectors. Therefore, secure template constructions are not immediately applicable when feature vectors are composed of real numbers. We propose a generic transformation and extend the domain of biometric template protection algorithms from integer-valued feature vectors to real valued feature vectors. We show that our transformation is accuracy-preserving and verify our theoretical findings by reporting the implementation results using a public keystroke dynamics dataset.

关键词： biometric security

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A Domain is only as Good as its Buddies: Detecting Stealthy Malicious Domains via Graph Inference 18

A Domain is only as Good as its Buddies: Detecting Stealthy ...

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8th acm conference on data and application security and privacy (CODASPY)

作者： Khalil, Issa M. Guan, Bei Nabeel, Mohamed Yu, Ting Qatar Comp Res Inst Doha Qatar

ISBN: (纸本)9781450356329

Inference based techniques are one of the major approaches to analyze DNS data and detect malicious domains. The key idea of inference techniques is to first define associations between domains based on features extracted from DNS data. Then, an inference algorithm is deployed to infer potential malicious domains based on their direct/indirect associations with known malicious ones. The way associations are defined is key to the effectiveness of an inference technique. It is desirable to be both accurate (i.e., avoid falsely associating domains with no meaningful connections) and with good coverage (i.e., identify all associations between domains with meaningful connections). Due to the limited scope of information provided by DNS data, it becomes a challenge to design an association scheme that achieves both high accuracy and good coverage. In this paper, we propose a new approach to identify domains controlled by the same entity. Our key idea is an in-depth analysis of active DNS data to accurately separate public IPs from dedicated ones, which enables us to build high-quality associations between domains. Our scheme avoids the pitfall of naive approaches that rely on weak "co-IP" relationship of domains (i.e., two domains are resolved to the same IP) that results in low detection accuracy, and, meanwhile, identifies many meaningful connections between domains that are discarded by existing state-of-the-art approaches. Our experimental results show that the proposed approach not only significantly improves the domain coverage compared to existing approaches but also achieves better detection accuracy. Existing path-based inference algorithms are specifically designed for DNS data analysis. They are effective but computationally expensive. To further demonstrate the strength of our domain association scheme as well as improve the inference efficiency, we construct a new domain-IP graph that can work well with the generic belief propagation algorithm. Through compre

关键词： Malicious Domains Graph Inference DNS data Domain Association Belief Propagation

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Secure Storage with Replication and Transparent Deduplication 18

Secure Storage with Replication and Transparent Deduplicatio...

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8th acm conference on data and application security and privacy (CODASPY)

作者： Leontiadis, Iraklis Curtmola, Reza Ecole Polytech Fed Lausanne Sch Comp & Commun Sci Lausanne Switzerland New Jersey Inst Technol Dept Comp Sci Newark NJ 07102 USA New Jersey Inst Technol Newark NJ 07102 USA

ISBN: (纸本)9781450356329

We seek to answer the following question: To what extent can we deduplicate replicated storage ? To answer this question, we design ReDup, a secure storage system that provides users with strong integrity, reliability, and transparency guarantees about data that is outsourced at cloud storage providers. Users store multiple replicas of their data at different storage servers, and the data at each storage server is deduplicated across users. Remote data integrity mechanisms are used to check the integrity of replicas. We consider a strong adversarial model, in which collusions are allowed between storage servers and also between storage servers and dishonest users of the system. A cloud storage provider (CSP) could store less replicas than agreed upon by contract, unbeknownst to honest users. ReDup defends against such adversaries by making replica generation to be time consuming so that a dishonest CSP cannot generate replicas on the fly when challenged by the users. In addition, ReDup employs transparent deduplication, which means that users get a proof attesting the deduplication level used for their files at each replica server, and thus are able to benefit from the storage savings provided by deduplication. The proof is obtained by aggregating individual proofs from replica servers, and has a constant size regardless of the number of replica servers. Our solution scales better than state of the art and is provably secure under standard assumptions.

关键词： remote data integrity checking RDIC replication deduplication

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Access Control Model for Virtual Objects (Shadows) Communication for AWS Internet of Things 18

Access Control Model for Virtual Objects (Shadows) Communica...

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8th acm conference on data and application security and privacy (CODASPY)

作者： Alshehri, Asma Benson, James Patwa, Farhan Sandhu, Ravi Univ Texas San Antonio C SPECC San Antonio TX 78249 USA Univ Texas San Antonio Dept Comp Sci San Antonio TX USA Univ Texas San Antonio San Antonio TX USA

ISBN: (纸本)9781450356329

The concept of Internet of Things (IoT) has received considerable attention and development in recent years. There have been significant studies on access control models for IoT in academia, while companies have already deployed several cloud-enabled IoT platforms. However, there is no consensus on a formal access control model for cloud-enabled IoT. The access-control oriented (ACO) architecture was recently proposed for cloud-enabled IoT, with virtual objects (VOs) and cloud services in the middle layers. Building upon ACO, operational and administrative access control models have been published for virtual object communication in cloud-enabled IoT illustrated by a use case of sensing speeding cars as a running example. In this paper, we study AWS IoT as a major commercial cloud-IoT platform and investigate its suitability for implementing the afore-mentioned academic models of ACO and VO communication control. While AWS IoT has a notion of digital shadows closely analogous to VOs, it lacks explicit capability for VO communication and thereby for VO communication control. Thus there is a significant mismatch between AWS IoT and these academic models. The principal contribution of this paper is to reconcile this mismatch by showing how to use the mechanisms of AWS IoT to effectively implement VO communication models. To this end, we develop an access control model for virtual objects (shadows) communication in AWS IoT called AWS-IoT-acmVO. We develop a proof-of-concept implementation of the speeding cars use case in AWS IoT under guidance of this model, and provide selected performance measurements. We conclude with a discussion of possible alternate implementations of this use case in AWS IoT.

关键词： security Access Control Internet of Things (IoT) AWS IoT IoT Architecture Devices Virtual Objects ACL RBAC ABAC

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