Personal health record system (PHR system) stores health‐related information of an
individual. PHR system allows the data owner to manage and share his/her data with …

In this paper, we propose a privacy-preserving contact tracing protocol for smart phones,
and more specifically Android and iOS phones. The protocol allows users to be notified, if …

In this paper, we propose an efficient revocable Ciphertext-Policy Attribute-Based Encryption
(CP-ABE) scheme. We base on the direct revocation approach, by embedding the …

Ciphertext-policy attribute-based encryption (CP-ABE) has been regarded as one of the
promising solutions to protect data security and privacy in cloud storage services. In a CP …

Abstract Personal Health Records (PHR) system has attracted intensive attention due to its
universal accessibility and low cost in economics. Because of high cost of storing data and …

The revocable ciphertext‐policy attribute‐based encryption (R‐CP‐ABE) is an extension of
ciphertext‐policy attribute‐based encryption (CP‐ABE), which can realize user direct …

In order to ensure best health care experience for the user, the user should be able to
access or grant access to his medical information as the requirement arises. Currently, when …

With the widespread application of the Internet of Things (IoT) technology, it is expected to
become a new data management model. But IoT devices have limited resource storage and …

Abstract The Personal Health Record (PHR) could be seen as a preventive care solution to
the incoming aging society. The blockchain-based PHR system has been proposed recently …

With the arrival of the era of big data, more and more users begin to adopt public cloud
storage to store data and compute data. Sharing large amounts of sensitive data in the …