Enhanced sensor safe attachment and key management method in body area network

Abstract

The invention discloses an enhanced sensor safe attachment and key management method in a body area network, and the method is achieved based on the sensor network which comprises sensor nodes, a patient terminal, a medical worker terminal and a key generating center. The method includes the step of initialization, the step of sensor safe attachment, the step of mutual authentication between the patient terminal and the medical worker terminal, the step of authentication between the patient terminal and all the sensor nodes, the step of authentication between all the sensor nodes in pairs, the step of group key generation and the step of group member management, tripartite bidirectional authentication among the medical worker terminal, the patient terminal and the sensor nodes is built, body safe attachment of the sensor nodes and complete collection and feedback of medical treatment information are ensured, and various kinds of safety attacks can be resisted. Light algorithms such as an irreversible Hash chain and elliptic curve encryption are adopted simultaneously, keys are easy to generate, the calculation process is efficient, calculation expenditure and communication expenditure of the nodes are reduced, and service life of the nodes is prolonged.

Description

technical field [0001] The invention belongs to the technical field of information security, and in particular relates to a sensor attachment authentication and key management method in a body area network. Background technique [0002] The emergence of body area network (also known as biomedical sensor network) has greatly promoted the development of electronic medical systems, and changed and evolved the methods and technologies of acquiring, processing and communicating important medical data in the medical care system. The body area network can be used to remotely and continuously monitor the health status of patients to provide timely and reliable medical services; it can provide new treatment methods for hospitalization and ensure its superior quality of medical care; it can also be used for military activities, sports, Somatosensory games, etc. provide important physical signs data. Compared with the traditional sensor network, the body area network is different in t...

AI Technical Summary

Problems solved by technology

However, these methods do not consider the authentication between nodes and patients, so it is easy for malicious nodes to obtain important medical data

In the method of Li et al., a technique called GDP (group device pairing) is applied to authentication and group key construction, but its computational overhead and communication overhead are very large, which is limited for energy and resources. Medical sensor nodes are deadly

In addition, the above two methods ignore the mutual authentication between nodes, thus making the process of joining and deleting nodes very insecure

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