Patients go to multiple healthcare providers for treatment, and their health data is generally distributed among providers. The distributed health data and the decentralized health care system structure make it ideal ...
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Patients go to multiple healthcare providers for treatment, and their health data is generally distributed among providers. The distributed health data and the decentralized health care system structure make it ideal for blockchain-based health information systems. The authors consider the referral use case;for instance, a patient goes to his primary health Centre (PHC) for treatment and is referred to a hospital. authentication is usually done using certificates or key cryptography, which could become cumbersome when multiple parties are involved in a healthcare interaction. The security requirements were defined, and a novel multi-party, mutual patient identityauthentication scheme called "distributed Dynamic Mutual identityauthentication (DDMIA)" was proposed for the referral use case in a blockchain-based e-health network. The DDMIA enables the PHC to authenticate the patient to the referred hospital. The DDMIA scheme was designed using Elliptic Curve Cryptography. It was proven to be secure by assuming the hardness of the elliptic curve discrete log problem (ECDLP) and Elliptic curve computational Diffie-Hellman problem (ECDH) using CK-Model. The formal security analysis using BAN logic proved that the sessions are secure after authentication. The DDMIA scheme was simulated in the AVISPA tool and proven safe against all active attacks. The scheme allows a patient to be authenticated by multiple parties without registering with all parties. It eliminates the need for multiple registration centers as well as digital certificates. Hence, the DDMIA scheme can be implemented for similar multiparty authentication requirements in blockchain-based networks.
Improved advancements in 5G communication and intelligent connected vehicle technologies have accelerated the implementation of intelligent transportation systems. Intelligent vehicles, roadside devices, and open wire...
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Improved advancements in 5G communication and intelligent connected vehicle technologies have accelerated the implementation of intelligent transportation systems. Intelligent vehicles, roadside devices, and open wireless communication networks collectively expand the vulnerability landscape of intelligent transportation system (ITS) security, thereby increasing the potential exposure to security risks. Nonetheless, mobile vehicles require frequent authentication with Roadside Units (RSUs), which in turn results in substantial computational and communication overhead. Consequently, this approach leads to performance bottlenecks in resource-constrained On-Board Units (OBUs). In this paper, we are concerned with a lattice-based certificateless secure data transmission scheme for the Internet of Vehicles (IoV) based on Blockchain. The proposed protocol incorporates identityauthentication functionality and effectively integrates the cross-domain authentication characteristics of the Blockchain. Initially, the Trusted Authority (TA) uploads the registration information of vehicles onto the Blockchain to verify the authenticity of a vehicle's identity by examining the data stored in the Blockchain. When Roadside Units securely collect authenticated transactions and message transmission traffic, the integrity of the messages is ensured through the utilization of the lattice-based signcryption algorithm as part of a block. Subsequently, according to the data transmission algorithm, these partial blocks are transformed into complete blocks and disseminated across the entire network. The complete blocks were subsequently mined using a consensus algorithm that incorporated a voting mechanism. Furthermore, the security of the proposed protocol is rigorously proven by employing a random oracle model. Finally, the efficiency of the data transmission algorithm was rigorously evaluated under the Barabasi-Albert BA (3) and Erdos-Renyi ER (0,1) models, ensuring its effectiveness in
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