Hangzhou Normal University

Xiumei Li

Bin Hu

Qi Xie

Xiao Tan

Zixuan Ding

Lidong Han

Dongnan Liu

A traffic accident forensics method based on a blockchain is provided. After a traffic accident, the method allows vehicles to carry out a mutual verification and sign a respective accident report. After one of the vehicles verifies with a road side unit, the signed accident report is submitted to the road side unit and uploaded to the blockchain, so as to record the accident report and preventing the accident report from being tampered, and an efficient mutual verification between the vehicle and the road side unit is achieved. The key parameters in the mutual verification process are encrypted based on an elliptic curve algorithm, and thus the security of the whole mutual verification process is improved. A batch verification way for signatures is designed to reduce the compute pressure of a wireless device. Vehicles use dynamic anonymity policies to protect privacy in the forensics method.

Traffic accident forensics method based on blockchain

A method for inter-hospital identity authentication and electronic medical record transfer of patients is provided. Based on a blockchain technology, a patient achieves secure and efficient inter-hospital transfer authentication, and a new hospital accesses an electronic medical record with authorization of the patient, thus achieving reliable electronic medical record access controls. In each hospital, the patient, a medical server, and a doctor achieve efficient tripartite authentication and negotiation of session keys, and communicate based on the session keys. By introducing an elliptic curve to encrypt key parameters in an authentication process, a security of the entire authentication process is improved, and a computational pressure on a wireless device is reduced. In the authentication and the electronic medical record, the patient uses dynamic anonymity policies to protect privacy.

Inter-hospital electronic medical record access authentication protocol based on blockchains

A privacy protection authentication method based on a wireless body area network may be applied to a smart home care system. The method provides an authentication method for two-way authentication and key verification between a device and a cloud server, can ensure identities of the device and the cloud server to be valid and prevent network information security from being affected by external invasion attacks. A physical unclonable function and an elliptic curve cryptography algorithm are introduced to encrypt key data in the authentication process, so that the whole authentication process is in a safe environment, and the security of the authentication process is further improved through adding and removing functions of a third-party identity. The privacy protection authentication protocol method can resist replay attacks and smart card impersonation attacks, the whole authentication process is safe and efficient, and has a high application value in smart home care scenes.

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Hangzhou, China

Xiumei Li