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Electronic Health Records (EHRs) store sensitive patient information, necessitating stringent access control and sharing mechanisms to uphold data security and comply with privacy regulations such as the General Data Protection Regulation…

Cryptography and Security · Computer Science 2026-02-25 Tayeb Kenaza , Islam Debicha , Youcef Fares , Mehdi Sehaki , Sami Messai

Electronic Health Records (EHR) have revolutionized healthcare by digitizing patient data, improving accessibility, and streamlining clinical workflows. However, extracting meaningful insights from these complex and multimodal datasets…

Artificial Intelligence · Computer Science 2025-10-27 Naama Kashani , Mira Cohen , Uri Shaham

In single-cloud storage, ciphertext-policy attribute-based encryption (CP-ABE) allows one to encrypt any data under an access structure to a cloud server, specifying what attributes are required to decrypt. In multi-cloud storage, a secret…

Cryptography and Security · Computer Science 2023-10-25 Shuai Feng , Liang Feng Zhang

With recent elevated adaptation of cloud services in almost every major public sector, the health sector emerges as a vulnerable segment, particularly in data exchange of sensitive Health records, as determining the retention, exchange, and…

Cryptography and Security · Computer Science 2024-03-12 Raza Imam , Faisal Anwer

Data sharing is ubiquitous in the metaverse, which adopts blockchain as its foundation. Blockchain is employed because it enables data transparency, achieves tamper resistance, and supports smart contracts. However, securely sharing data…

Cryptography and Security · Computer Science 2024-12-19 Liang Zhang , Zhanrong Ou , Changhui Hu , Haibin Kan , Jiheng Zhang

Secure and privacy-preserving management of Personal Health Records (PHRs) has proved to be a major challenge in modern healthcare. Current solutions generally do not offer patients a choice in where the data is actually stored and also…

Cryptography and Security · Computer Science 2020-05-19 Zainab Abaid , Arash Shaghaghi , Ravin Gunawardena , Suranga Seneviratne , Aruna Seneviratne , Sanjay Jha

Proxy re-encryption (PRE) allows a semi-trusted proxy to convert a ciphertext originally intended for Alice into an encryption of the same message intended for Bob. Song Luo, Jianbin Hu, and Zhong Chen presented a novel ciphertext policy…

Cryptography and Security · Computer Science 2015-03-13 Keying Li

In this paper we present reclaimID: An architecture that allows users to reclaim their digital identities by securely sharing identity attributes without the need for a centralised service provider. We propose a design where user attributes…

Cryptography and Security · Computer Science 2018-09-11 Martin Schanzenbach , Georg Bramm , Julian Schütte

The rapid development of personal health records (PHR) systems enables an individual to collect, create, store and share his PHR to authorized entities. Health care systems within the smart city environment require a patient to share his…

Cryptography and Security · Computer Science 2020-11-13 Lewis Nkenyereye , S. M. Riazul Islam , Mahmud Hossain , M. Abdullah-Al-Wadud , Atif Alamri

Integrating blockchain technology into healthcare systems presents a transformative approach to documenting, storing, and accessing electronic health records (EHRs). This research introduces a novel blockchain-based EHR system designed to…

Cryptography and Security · Computer Science 2025-03-04 Geeta N. Brijwani , Prafulla E Ajmire , Mohammad Atique Mohammad Junaid , Suhashini Awadhesh Charasia , Deepali Bhende

Cloud computing can provide a flexible way to effectively share data among multiple users since it can overcome the time and location constraints of computing resource usage. However, the users of cloud computing are still reluctant to…

Cryptography and Security · Computer Science 2019-04-03 Kwangsu Lee

In this paper we present the design of name based access control scheme which facilitates data confidentiality by applying end-to-end encryption to data published on NDN with flexible fine-grained access control, which allows to define an…

Cryptography and Security · Computer Science 2021-02-23 Aleksandr Lenin , Peeter Laud

The vigorous development of the Internet has spurred exponential data growth, yet data is predominantly stored in isolated user entities, hampering its full value realization. In large-scale deployment of ``AI+industries'' such as smart…

Cryptography and Security · Computer Science 2026-03-30 Yongyang Lv , Xiaohong Li , Ruitao Feng , Xinyu Li , Guangdong Bai , Leo Zhang , Lili Quan , Willy Susilo

Medical data involves a large amount of personal information and is highly privacy sensitive. In the age of big data, the increasing informatization of healthcare makes it vital that medical information is stored securely and accurately.…

Cryptography and Security · Computer Science 2022-07-14 Zhijie Sun , Dezhi Han , Dun Li , Xiangsheng Wang , Chin-Chen Chang , Zhongdai Wu

Several recent works have proposed and implemented cryptography as a means to preserve privacy and security of patients health data. Nevertheless, the weakest point of electronic health record (EHR) systems that relied on these…

Computers and Society · Computer Science 2017-08-09 Adebayo Omotosho , Justice Emuoyibofarhe , Christoph Meinel

In this work, we provide the first construction of Attribute-Based Encryption (ABE) for general circuits. Our construction is based on the existence of multilinear maps. We prove selective security of our scheme in the standard model under…

Cryptography and Security · Computer Science 2012-10-22 Amit Sahai , Brent Waters

Attribute-based encryption (ABE) comprises a set of one-to-many encryption schemes that allow the encryption and decryption of data by associating it with access policies and attributes. Therefore, it is an asymmetric encryption scheme, and…

Cryptography and Security · Computer Science 2022-09-27 Aintzane Mosteiro-Sanchez , Marc Barcelo , Jasone Astorga , Aitor Urbieta

Access control to data in traditional enterprises is typically enforced through reference monitors. However, as more and more enterprise data is outsourced, trusting third party storage servers is getting challenging. As a result,…

Cryptography and Security · Computer Science 2015-03-20 Sonia Jahid , Nikita Borisov

The very high growth of Intelligent Transportation Systems (ITS) has generated an urgent requirement for secure, effective, and context-aware data sharing mechanisms, especially over heterogeneous and geographically dispersed settings. This…

Cryptography and Security · Computer Science 2026-02-23 Aparna Singh , Geetanjali Rathee , Chaker Abdelaziz Kerrache , Mohamed Chahine Ghanem

In recent years, availability and usage of extensive systems for Electronic Healthcare Record (EHR) is increased. In medical centers such hospitals and other laboratories, more health data sets were formed during the treatment process. In…

Computers and Society · Computer Science 2020-04-06 Faizal Khan , Omar Reyad