Blockchain‐based patient centric health care communication system

Abstract

Summary The rapid increase in health care data breaches with the existing centralized systems emphasizes a decentralized health care system while ensuring reliability, privacy, security, and trust. Further, to ensure trust in the medical community, scientist, and pharmaceutical, it is essential to improve the quality of health care data management. In this direction, we proposed a blockchain‐based decentralized privacy‐preserving EMR management (DPEM), which can ensure accountability and integrity. We propose a four‐layered framework for DPEM consisting of a data preparation layer, access control and security layer, data sharing layer, and data storage layer with the objectives: (i) To provide privacy‐preserving in DPEM, we propose a new elliptic curve‐based content extraction signature (EC‐CES) through which patients can exclude EMR's sensitive information to eradicate leakage of privacy information in the data sharing process. (ii) To provide secure data sharing, blockchain smart contracts are used to define the predefined access permissions of the patients. (iii) To provide secure storage, we use a cloud facility to store actual EMRs, and consortium blockchain is used to store respective indexes of EMRs so that the data leakages of EMRs could be optimized and simultaneously, indexes in consortium blockchain will take care the integrity of EMRs. (iv) To provide access control in data sharing, we adopted ciphertext‐policy attribute‐based encryption (CP‐ABE) access control policy to empower the owners of data to secure the cloud storage and give access to authorized users through the encrypted link to the cloud storage with access control policies blinded. Finally, the security analysis demonstrates that DPEM is an optimized way of achieving EMRs secure data sharing.

An empirical study to demonstrate that EdDSA can be used as a performance improvement alternative to ECDSA in Blockchain and IoT

“…[18] proposed a flexible Pedersen commitment implementation based on elliptic curves in twisted Edwards form, which helped to improve security, adaptive data size, and data point flexibility. [19] investigated optimal prime fields for lightweight ECC implementation, focusing on performance and security. [20] performed a comparative study of algorithms for batch verification of Edwards curve digital signatures and showed that small batch size algorithms S2' and SP yield better speedup results than the default algorithm N'.…”

“…[76] enhanced Edwards curve to achieve nonrepudiation in IoT blockchain ecosystem. [19] Their work demonstrates the use of the Edwards curve and showcases how they can reduce implementation space, and operational cost and perform fast verification.…”

“…MuSig is a new Schnorrbased multi-signature scheme proposed by [53].The use of Schnorr signatures makes it simple, efficient and support key aggregation. In [54] the authors introduced a security model for general aggregate signature schemes based on multi-user and thereby achieved a significant reduction EC/DSS/DSA Domain Solution # Edwards Curve IoT Security enhancement [9], [13], [44], [45], [17] , [76] ECC [19], [43] Table 4: Elliptic and Edwards curve application in IoT.…”

An optimized device‐to‐device (D2D) blockchain network for the insurance industry

“…Therefore, the blockchain network is not centralized. [1][2][3] The concept that guarantees data integrity and immutability in the blockchain is a computational process named mining. A miner performs an intensive computing process to add a new block to the existing blockchain.…”

“…The transactions added to the blockchain network cannot be modified or deleted. Therefore, the blockchain network is not centralized 1–3 …”