Efficient Anonymous Certificate-Based Multi- Message and Multi-Receiver Signcryption Scheme for Healthcare Internet of Things

Abstract

Healthcare Internet of Things (IoT) is an emerging paradigm, which can provide comprehensive and different types of health services and enable various types of medical sensors to monitor patient's health conditions. In the healthcare IoT, patient is deployed with a variety of medical sensors, which continuously monitors and collects patient's sensitive health data that needs specially protection for preventing privacy leakage. To safely send multiple different health data monitored by multiple different medical sensors to multiple corresponding healthcare professionals in one data report, several multi-message and multi-receiver signcryption schemes have been introduced by employing the traditional public key cryptography, identity-based cryptography or certificateless cryptography. However, these schemes suffer from the certificate management, key escrow and key distribution problem. Besides, due to the resource-constraint property of medical sensors, they are unsuitable for healthcare IoT in terms of both performance and privacy requirements. To solve these issues, this paper introduces an efficient anonymous certificate-based multimessage and multi-receiver signcryption scheme for healthcare IoT, where the certificate-based cryptography and elliptic curve cryptography are combined to simplify the certificate management problem, eliminate the key escrow problem, solve the key distribution problem and ensure the privacy-preserving. Furthermore, the security analysis suggests that the proposed scheme is able to achieve the confidentiality, unforgeability, receiver anonymity, sender anonymity and decryption fairness; the performance evaluation indicates that the proposed scheme brings to the lower computation cost and communication cost in comparison to the existing schemes.INDEX TERMS Certificate-based cryptography, elliptic curve cryptography, multi-message and multi-receiver signcryption, healthcare Internet of Things.

A Multi-Message Multi-Receiver Signcryption Scheme with Edge Computing for Secure and Reliable Wireless Internet of Medical Things Communications

“…In comparison, from the related existing schemes, as shown in Figure 4, the ciphertext size is comparatively less in our proposed scheme. compared our scheme with Pang et al [20], Peng et al [21] and Ming et al [28] by considering the same settings, and the findings are shown in Tables 3-5. The time required for SHEM is 0.48 ms [32,33].…”

“…However, for the delivery of partial private keys, the scheme needs a secure channel. Finally, in 2020, Ming et al [28] proposed an efficient anonymous certificate-based MMSC scheme for healthcare Internet of Things. The proposed method is based on ECC and employs certificate-based cryptography.…”

“…In this section, we compare our scheme's communication and computation costs with the corresponding current three existing schemes, i.e., Pang et al [20], Peng et al [21] and Ming et al [28], on the basis of expensive mathematical operations used such as Scalar Elliptic curve point Multiplication (SEM) and Scalar HyperElliptic curve divisor Multiplication (SHEM) to show the efficiency, security and superiority. While the operation, such as addition, division, subtraction, hashing, encryption and decryption, is neglected because of its minimum numerical length.…”

“…The following specs are observed on a workstation: Intel Core i7-4510U Processor @ 2.0 GHz, 8 GB RAM and Windows 7 Home Standard 64-bit Operating System [31]. We compared our scheme with Pang et al [20], Peng et al [21] and Ming et al [28] by considering the same settings, and the findings are shown in Tables 3-5. The time required for SHEM is 0.48 ms [32,33].…”

Efficient and anonymous multi‐message and multi‐receiver electronic health records sharing scheme without secure channel based on blockchain

“…However, the scheme has low efficiency of signcryption and designcryption because of many bilinear pairing operations. Ming et al 39 did not consider bilinear pairing operation based on the MMRS algorithm, which improves the computational efficiency and achieves the receiver's identity anonymity. In addition, the scheme has the key leakage problem caused by the secure channel during the key transmission.…”