Blockchain-assisted searchable attribute-based encryption for e-health systems

Xiang, Xinyin; Zhao, Xingwen

doi:10.1016/j.sysarc.2022.102417

Cited by 35 publications

(15 citation statements)

References 24 publications

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“…The presence of blockchain also ensures the reliability of multi-keyword search results. Additionally, many blockchain-based ABSE schemes [41]- [45] have been proposed to support multikeyword search. The characteristics of blockchain are effectively utilized in ABSE schemes to protect the confidentiality of EHR keyword ciphertext.…”

Section: B Related Workmentioning

confidence: 99%

An Inner Product Predicate-Based Medical Data-Sharing and Privacy Protection System

Wu,

Wang,

Wan

et al. 2024

IEEE Access

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Searchable encryption is widely used in electronic health record systems because it enables users to search ciphertext data without decryption. However, the existing traditional searchable encryption schemes lack fine-grained access policies with wildcards in electronic health record systems. And they also do not consider the problem of hiding policies, as well as the problem of incomplete search results caused by cloud servers. In order to solve all the above problems, this paper proposes a blockchain-aided attribute-based searchable scheme with the properties of inner product predicate. In the proposed scheme, the attribute encryption mechanism implements fine-grained access policies with wildcards, which improves the data owner's ability to control access authorization precisely. Introducing the inner product predicate not only achieves fully hidden access policies but also prevents the leakage of sensitive medical data. The immutability of the blockchain ensures the integrity of multi-keyword search results, guaranteeing reliable data sharing. Finally, the security proof and the performance evaluation are conducted to confirm the security and effectiveness of the proposed scheme.INDEX TERMS Attribute-based searchable encryption, Fine-grained access policies with wildcards, Fully hidden, Inner-product predicate, Blockchain. I. INTRODUCTION A. BACKGROUND VOLUME 11, 2023

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Section: B Related Workmentioning

confidence: 99%

An Inner Product Predicate-Based Medical Data-Sharing and Privacy Protection System

Wu,

Wang,

Wan

et al. 2024

IEEE Access

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“…The searchable and fine-grained AC technique provides data confidentiality. The ABE and BC features have been combined to provide better confidentiality to healthcare CD [33]. Poongodi et al constructed the BC network between hospitals, medical centers, insurance companies and patients.…”

Section: Blockchain Based Access Control and Monitoringmentioning

confidence: 99%

Internet of Thing Based Confidential Healthcare Data Storage, Access Control and Monitoring Using Blockchain Technique

Sumathi

Vijayaraj

Raja

et al. 2022

cai

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Internet of Things plays a significant role in multiple sectors like agriculture, manufacturing and healthcare for collecting information to automation. The collected information is in different diversity and consists of confidential and non-confidential information. Secure handling of confidential data is a crucial task in cloud computing like storage, access control and monitoring. The blockchain based storage technique provides immutable data storage, efficient access control and dynamic monitoring to confidential data. Thus, the secure internet of things data storage, access control and monitoring using blockchain technique is proposed in this work. The patients health information that are in different formats are pruned by a decision tree algorithm and it classifies the confidential data and nonconfidential data by the fuzzy rule classification technique. Depending on data owner's willing, the fuzzy rule is framed and the confidential and non-confidential data collected by internet of things sensors are classified. To provide confidentiality to confidential data, Attribute Based Encryption is applied to confidential data and stored in an off-chain mode of blockchain instead of entire data encryption and storage. The non-confidential data is stored in a plaintext form in cloud storage. When compared to support vector machine, K-nearest neighbor and Naive Bayes classification techniques, the proposed fuzzy rule based confidential data identification produces greater than 96 % of accuracy based on data owner willing and confidential data storage takes lesser than 20 % of storage space and processing time in an entire data storage. Additionally, the blockchain performances like throughput, network scalability and latency is optimized through minimal block size and transactions. Thus, our experimental results show that the proposed blockchain based internet of things data storage, access control and monitoring technique provides better confidentiality and access control to confidential data than the conventional cloud storage technique with lesser processing time.

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“…Digital healthcare systems heighten the requirement of seamless collaboration with multiple healthcare infrastructures to provide pervasive inter-domain services. 5,6 The continuous communication between disparate underlying networks increases not only the volume but also the velocity of data, which results in outsourcing electronic health records (EHR) and their search services to a healthcare cloud server. 7 Outsourcing technology enables cloud server to proffer ubiquitous and convenient access to many stored documents.…”

Section: Introductionmentioning

confidence: 99%

“…IoT in several risk‐critical applications such as military control systems, healthcare systems, precision agriculture, and industrial control systems, configure complex distributed network structures for continuous data transmission. Digital healthcare systems heighten the requirement of seamless collaboration with multiple healthcare infrastructures to provide pervasive inter‐domain services 5,6 . The continuous communication between disparate underlying networks increases not only the volume but also the velocity of data, which results in outsourcing electronic health records (EHR) and their search services to a healthcare cloud server 7 .…”

Section: Introductionmentioning

confidence: 99%

Key‐aggregate searchable encryption with multi‐user authorization and keyword untraceability for distributed IoT healthcare systems

Trivedi

Patel

2023

Trans Emerging Tel Tech

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Adopting Internet-of-Things (IoT) enables pervasive computing by integrating distributed healthcare infrastructures to enhance conventional medical services. Integrated healthcare systems store numerous encrypted electronic health records (EHR) on clouds that multiple users frequently access as per delegated access rights. Sharing any group of selected EHR within any group of users involving different encryption keys potentially heightens security and privacy concerns over inadvertent data leaks. This necessitates a searchable encryption mechanism in distributed IoT requiring secure multi-user authorization and efficient searchable keys management with compact trapdoors. Contemporary state-of-the-art protocols utilize large numbers of expensive encryption keys and keyword trapdoors while lacking secure multi-user authorization and keyword untraceability on clouds. This motivates us to design a novel key-aggregate searchable encryption protocol that jointly achieves multi-user authorization and keyword untraceability for distributed IoT applications. Key-aggregation reduces complexity in sharing (n) documents by executing a stand-alone trapdoor, while token-based authorization allows keyword search only to legitimate data users. Additionally, secure dynamic indexing achieves keyword untraceability on clouds. Security analysis illustrates correctness and resilience against typical attacks. Performance and empirical analysis demonstrate a relative advantage in storage, communication, and computational costs while incorporating secure multi-user authorization and keyword untraceability as additional security features.

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Blockchain-assisted searchable attribute-based encryption for e-health systems

Cited by 35 publications

References 24 publications

An Inner Product Predicate-Based Medical Data-Sharing and Privacy Protection System

An Inner Product Predicate-Based Medical Data-Sharing and Privacy Protection System

Internet of Thing Based Confidential Healthcare Data Storage, Access Control and Monitoring Using Blockchain Technique

Key‐aggregate searchable encryption with multi‐user authorization and keyword untraceability for distributed IoT healthcare systems

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