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A Lightweight Cloud Sharing PHR System with Access policy Updating

IEEE ACCESS 2018年 6卷 64611-64621页

作者： Ying, Zuobin Jang, Wenjie Cao, Shuanglong Liu, Ximeng Cui, Jie Anhui Univ Sch Comp Sci & Technol Hefei 230601 Anhui Peoples R China Fuzhou Univ Coll Math & Comp Sci Fuzhou 350108 Fujian Peoples R China Singapore Management Univ Sch Informat Syst Singapore 178902 Singapore

The rapid development of smart wearable devices makes personal health management feasible, which also stimulates the evolution of personal health records (PHRs). However, PHRs face many security challenges ever since it has been created. Besides, the complicated policy adjusting operation makes the PHRs stored in the cloud not so easy to use. In this paper, we propose a lightweight PHRs system on the basis of attribute-based encryption with policy updating. To update an outsourced ciphertext PHRs in the cloud, PHRs owners only need to generate an updating key, then upload it to the cloud server instead of retrieving the entire ciphertexts. We proved the security of our scheme, and the experiment result indicates that our system is much more efficient than the brute force way of ciphertext updating.

关键词： Personal health records device-to-device ciphertext-policy attribute-based encryption policy update smart wearable device cloud computing

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Privacy-Preserving attribute-based Keyword Search in Shared Multi-owner Setting

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IEEE TRANSACTIONS ON DEPENDABLE AND SECURE COMPUTING 2021年第3期18卷 1080-1094页

作者： Miao, Yinbin Liu, Ximeng Choo, Kim-Kwang Raymond Deng, Robert H. Li, Jiguo Li, Hongwei Ma, Jianfeng Xidian Univ Dept Cyber Engn Xian 710071 Peoples R China State Key Lab Cryptol POBox 5159 Beijing 100878 Peoples R China Fuzhou Univ Coll Math & Comp Sci Fuzhou 350117 Peoples R China Fujian Prov Key Lab Informat Secur Network Syst Fuzhou 350117 Peoples R China Univ Texas San Antonio Dept Informat Syst & Cyber Secur San Antonio TX 78249 USA Singapore Management Univ Dept Informat Syst 80 Stamford Rd Singapore Singapore Fujian Normal Univ Coll Math & Informat Fuzhou 350117 Peoples R China Univ Elect Sci & Technol China Dept Comp Sci & Engn Chengdu 610051 Peoples R China

ciphertext-policy attribute-based Keyword Search (CP-ABKS) facilitates search queries and supports fine-grained access control over encrypted data in the cloud. However, prior CP-ABKS schemes were designed to support unshared multi-owner setting, and cannot be directly applied in the shared multi-owner setting (where each record is accredited by a fixed number of data owners), without incurring high computational and storage costs. In addition, due to privacy concerns on access policies, most existing schemes are vulnerable to off-line keyword-guessing attacks if the keyword space is of polynomial size. Furthermore, it is difficult to identify malicious users who leak the secret keys when more than one data user has the same subset of attributes. In this paper, we present a privacy-preserving CP-ABKS system with hidden access policy in Shared Multi-owner setting (basic ABKS-SM system), and demonstrate how it is improved to support malicious user tracing (modified ABKS-SM system). We then prove that the proposed ABKS-SM systems achieve selective security and resist off-line keyword-guessing attack in the generic bilinear group model. We also evaluate their performance using real-world datasets.

关键词： ciphertext-policy attribute-based encryption shared multi-owner setting hidden access policy user tracing off-line keyword-guessing attack

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CBDDS: Secure and Revocable Cache-based Distributed Data Sharing for Vehicular Networks

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IEEE TRANSACTIONS ON MOBILE COMPUTING 2024年第6期23卷 6579-6591页

作者： Zhang, Jing Liu, Xinzhong Cui, Jie Zhong, Hong Wei, Lu Bolodurina, Irina He, Debiao Anhui Univ Sch Comp Sci & Technol Key Lab Intelligent Comp & Signal Proc Minist Educ Hefei 230039 Peoples R China Anhui Univ Anhui Engn Lab IoT Secur Technol Hefei 230039 Peoples R China Orenburg State Univ Fac Math & Informat Technol Orenburg 460018 Russia Wuhan Univ Sch Cyber Sci & Engn Wuhan 430072 Hubei Peoples R China Shanghai Key Lab Privacy Preserving Computat MatrixElements Technol Shanghai 201204 Peoples R China

In vehicular networks, caching content on an edge server (ES) is a popular method for quickly responding to massive vehicle service requests, reducing communication delays, and enhancing driver and passenger service experiences. However, after integrating ESs with vehicular networks to provide vehicles access to the cached content in these ESs, significant challenges regarding protecting the privacy of vehicle data and communication security arise. In this study, to address security and privacy-preserving issues, we propose a secure and revocable cache-based distributed data sharing scheme for vehicular networks wherein a token authentication mechanism and multi-authority ciphertext-policy attribute-based encryption are integrated. In this scheme, both authentication and authorization capabilities are delegated to an ES while restricting access to service content to only legal vehicles, achieving proper access control between vehicles and ESs, and effectively preserving the privacy of vehicle data. Moreover, we attributed the revocations of ESs to the associated attribute authorities, eliminating the need for a system-wide update of keying materials. Through rigorous security proofs and detailed security analyses, we demonstrate that the scheme meets the security requirements of vehicular networks and can resist more security attacks. The proposed scheme achieves better balance between computational and communication costs than related schemes.

关键词： Access control authentication ciphertext-policy attribute-based encryption privacy-preserving vehicular networks

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Blockchain-Assisted Collaborative Service Recommendation Scheme With Data Sharing

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IEEE ACCESS 2021年 9卷 40871-40883页

作者： Yan, Biwei Dong, Anming Chai, Baobao Han, Yubing Zhou, Guanglin Zhao, Fangxin Qufu Normal Univ Sch Math Sci Qufu 273165 Shandong Peoples R China Qilu Univ Technol Shandong Acad Sci Sch Comp Sci & Technol Jinan 250353 Peoples R China

With the rapid development of cloud computing, a large number of web services have been emerging quickly, which brings a heavy burden for users to choose the services they preferred. In order to suggest web services for users, recommendation algorithms are needed and many of them have been investigated recently. However, most of the existing recommendation schemes are based on centralized historical data, which may lead to single point of failure. Generally, the data contains a lot of sensitive information that cloud may expose the privacy of users, which makes most cloud platforms reluctant to share their own data. In order to solve the above issues, the secure data sharing among cloud platforms is necessary for better recommendation, which can maximize the profits. In this paper, we propose a blockchain-assisted collaborative service recommendation scheme (BC -SRDS). Specifically, we adopt the ciphertext-policy attribute-based encryption (CP-ABE) algorithm to encrypt the data, which ensures the data confidentiality and realizes secure data sharing. Then, we utilize the blockchain to share data, such that the DoS attack, DDoS attack and single point of failure can be avoided. Meanwhile, the data integrity, tampering-proof of data are guaranteed through the blockchain. And we use locality-sensitive hashing algorithm to recommend the services for users. Finally, it is proved through the security analysis that BC -SRDS is capable of achieving data confidentiality, data integrity and tampering-proof. A series of experiments show that BC -SRDS achieves better recommendation accuracy compared with the existing schemes.

关键词： Collaborative service recommendation blockchain data sharing ciphertext-policy attribute-based encryption

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Reliable policy Updating Under Efficient policy Hidden Fine-Grained Access Control Framework for Cloud Data Sharing

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IEEE TRANSACTIONS ON SERVICES COMPUTING 2022年第6期15卷 3485-3498页

作者： Ying, Zuobin Jiang, Wenjie Liu, Ximeng Xu, Shengmin Deng, Robert H. City Univ Macau Inst Data Sci Macau 999078 Peoples R China Anhui Univ Sch Comp Sci & Technol Hefei 230601 Peoples R China Fuzhou Univ Sch Math & Comp Sci Fujian Prov Key Lab Informat Secur Network Syst Fuzhou 350117 Peoples R China Singapore Management Univ Sch Informat Syst Singapore 188065 Singapore Singapore Management Univ Secure Mobile Ctr Sch Informat Syst Singapore 178902 Singapore

ciphertext-policy attribute-based encryption (CP-ABE) is one of the potent encryption paradigms in protecting data confidentiality in the cloud data sharing scenario. However, the access policy of the traditional CP-ABE is in plaintext form that reveals significant sensitive information of data owners and data visitors. To mitigate this problem, two approaches have been proposed in the literature. One is partially hidden, where the attributes in the access policy are divided into two parts: the plaintext attribute names and the hidden attribute values. The other approach fully hides the attributes in the access policy which, unfortunately, hinders efficient and correct decryption as well as dynamic policy-updating. In this article, we design a security-enhanced attribute Cuckoo Filter (se-ACF) to hide the access policy and propose a new CP-ABE system, called Privacy-Preserving policy Updating ABE (3PU-ABE), which effectively integrates policy hiding and policy updating. We conduct rigorous security analysis and performance evaluation of 3PU-ABE. The results indicate that 3PU-ABE completely hides the access policy without affecting the decryption, and entails better policy updating efficiency than similar works.

关键词： ciphertext-policy attribute-based encryption cloud data sharing privacy preserving policy updating policy hiding

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Security-Aware Information Dissemination With Fine-Grained Access Control in Cooperative Multi-RSU of VANETs

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IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS 2022年第3期23卷 2170-2179页

作者： Liu, Xuejiao Chen, Wei Xia, Yingjie Hangzhou Normal Univ Sch Informat Sci & Engn Hangzhou 311121 Peoples R China Zhejiang Univ Coll Comp Sci Hangzhou 310027 Peoples R China Hangzhou Yuantiao Technol Co Hangzhou 310000 Peoples R China

Securing information dissemination is extremely important for various vehicular ad hoc networks (VANETs) applications. However, most of the applications require disseminating the critical information only to the authorized vehicles through V2I (Vehicle to Infrastructure) communications. Moreover, V2I communications usually suffer from incomplete information to vehicles in one RSU's transmission range. Therefore, it is an even challenging task that how to ensure reliable dissemination of encrypted data to the recipient vehicles in multi-RSU settings. We propose a security-aware information dissemination scheme with fine-grained access control in cooperative multi-RSU of VANETs. Our proposed scheme uses ciphertext-policy attribute-based encryption (CP-ABE) to ensure confidential communication in a broadcasting way, which ensures that only the vehicles that satisfy the access control policy can have the ability to access the information;and we employ proxy re-encryption in the communication protocol to make sure the moving vehicles in high-speed can get the whole encrypted information. Performance analysis shows that our scheme can enable fine-grained access control for the broadcasted information, and make sure the vehicles receive reliable information in the whole disseminating process. And our scheme is applicable and efficient in various scenarios of information dissemination, especially in cooperative multi-RSU of VANETs.

关键词： Reliability encryption Access control Protocols Task analysis Data dissemination Roads Vehicular ad hoc networks (VANETs) information dissemination ciphertext-policy attribute-based encryption

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An access control scheme with dynamic user management and cloud-aided decryption

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SECURITY AND COMMUNICATION NETWORKS 2016年第18期9卷 5659-5672页

作者： Shi, Jiaoli Huang, Chuanhe Wang, Jing He, Kai Shen, Xieyang Wuhan Univ Comp Sch Wuhan Peoples R China Collaborat Innovat Ctr Geospatial Technol Wuhan Peoples R China Jiujiang Univ Jiujiang Peoples R China

ciphertext-policy attribute-based encryption is becoming a cryptographic solution to realize fine-grained access control. However, some important problems have not been effectively solved yet such as (i) low efficiency of dynamic change of a user or his attribute and (ii) high computation cost at user end. In this paper, we propose an access control scheme with dynamic user management using a version key and especially realize direct cloud-aided attribute revocation without updating another user's key or re-encrypting ciphertexts. We present a cloud-aided decryption method with which most of decrypting work can be transferred to cloud. Compared with the existing schemes, our scheme causes less computation cost at user end and supports efficient dynamic change of a user or his attribute. Simulation indicates that our direct cloud-aided attribute revocation method takes less time. Copyright (C) 2017 John Wiley & Sons, Ltd.

关键词： cloud storage system access control ciphertext-policy attribute-based encryption dynamic user management cloud-aided decryption

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White-Box Traceable CP-ABE for Cloud Storage Service: How to Catch People Leaking Their Access Credentials Effectively

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IEEE TRANSACTIONS ON DEPENDABLE AND SECURE COMPUTING 2018年第5期15卷 883-897页

作者： Ning, Jianting Cao, Zhenfu Dong, Xiaolei Wei, Lifei Shanghai Jiao Tong Univ Dept Comp Sci & Engn Shanghai 200240 Peoples R China East China Normal Univ Shanghai Key Lab Trustworthy Comp Shanghai 200062 Peoples R China Shanghai Ocean Univ Coll Informat Technol Shanghai 201306 Peoples R China

ciphertext-policy attribute-based encryption (CP-ABE) has been proposed to enable fine-grained access control on encrypted data for cloud storage service. In the context of CP-ABE, since the decryption privilege is shared by multiple users who have the same attributes, it is difficult to identify the original key owner when given an exposed key. This leaves the malicious cloud users a chance to leak their access credentials to outsourced data in clouds for profits without the risk of being caught, which severely damages data security. To address this problem, we add the property of traceability to the conventional CP-ABE. To catch people leaking their access credentials to outsourced data in clouds for profits effectively, in this paper, we first propose two kinds of non-interactive commitments for traitor tracing. Then we present a fully secure traceable CP-ABE system for cloud storage service from the proposed commitment. Our proposed commitments for traitor tracing may be of independent interest, as they are both pairing-friendly and homomorphic. We also provide extensive experimental results to confirm the feasibility and efficiency of the proposed solution.

关键词： ciphertext-policy attribute-based encryption cloud storage outsourced data security white-box traceablity commitment

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Large Universe CCA2 CP-ABE With Equality and Validity Test in the Standard Model

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COMPUTER JOURNAL 2021年第4期64卷 509-533页

作者： Li, Cong Shen, Qingni Xie, Zhikang Feng, Xinyu Fang, Yuejian Wu, Zhonghai Peking Univ Sch Software & Microelect Beijing 102600 Peoples R China Peking Univ Natl Engn Res Ctr Software Engn Beijing 100871 Peoples R China

attribute-based encryption with equality test (ABEET) simultaneously supports fine-grained access control on the encrypted data and plaintext message equality comparison without decrypting the ciphertexts. Recently, there have been several literatures about ABEET proposed. Nevertheless, most of them explore the ABEET schemes in the random oracle model, which has been pointed out to have many defects in practicality. The only existing ABEET scheme in the standard model, proposed by Wang et al., merely achieves the indistinguishable against chosen-plaintext attack security. Considering the aforementioned problems, in this paper, we propose the first direct adaptive chosen-ciphertext security ciphertext-policy ABEET scheme in the standard model. Our method only adopts a chameleon hash function and adds one dummy attribute to the access structure. Compared with the previous works, our scheme achieves the security improvement, ciphertext validity check and large universe. Besides, we further optimize our scheme to support the outsourced decryption. Finally, we first give the detailed theoretical analysis of our constructions in computation and storage costs, then we implement our constructions and carry out a series of experiments. Both results indicate that our constructions are more efficient in Setup and Trapdoor and have the shorter public parameters than the existing ABEET ones do.

关键词： ciphertext-policy attribute-based encryption equality test the standard model adaptive chosen-ciphertext security

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Pairing-based CP-ABE with constant-size ciphertexts and secret keys for cloud environment

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COMPUTER STANDARDS & INTERFACES 2017年第Part1期54卷 3-9页

作者： Odelu, Vanga Das, Ashok Kumar Rao, Y. Sreenivasa Kumari, Saru Khan, Muhammad Khurram Choo, Kim-Kwang Raymond Indian Inst Technol Dept Math Kharagpur 721302 W Bengal India Int Inst Informat Technol Ctr Secur Theory & Algorithm Res Hyderabad 500032 Andhra Pradesh India Ch Charan Singh Univ Dept Math Meerut 250005 Uttar Pradesh India King Saud Univ Ctr Excellence Informat Assurance Riyadh 11451 Saudi Arabia China Univ Geosci Sch Comp Sci Wuhan 430074 Peoples R China Univ South Australia Sch Informat Technol & Math Sci Adelaide SA 5001 Australia Univ Texas San Antonio Dept Informat Syst & Cyber Secur San Antonio TX 78249 USA

ciphertext-policy attribute-based encryption (CP-ABE) scheme can be deployed in a mobile cloud environment to ensure that data outsourced to the cloud will be protected from unauthorized access. Since mobile devices are generally resource-constrained, CP-ABE schemes designed for a mobile cloud deployment should have constant sizes for secret keys and ciphertexts. However, most existing CP-ABE schemes do not provide both constant size ciphertexts and secret keys. Thus, in this paper, we propose a new pairing-based CP-ABE scheme, which offers both constant size ciphertexts and secret keys (CSCTSK) with an expressive AND gate access structure. We then show that the proposed CP-ABE-CSCTSK scheme is secure against chosen-ciphertext adversary in the selective security model, and present a comparative summary to demonstrate the utility of the scheme. (C) 2017 Elsevier B.V. All rights reserved.

关键词： ciphertext-policy attribute-based encryption Constant-size secret keys Constant-size ciphertexts Lightweight mobile devices Mobile cloud computing

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