Privacy protection and secure communication method suitable for wireless medical sensor network

Abstract

The invention discloses a privacy protection and secure communication method suitable for a wireless medical sensor network, which mainly comprises the following steps: system initialization generation, KGC generation of a system master key and a master public key, and construction of a secure hash function; secret value generation: the medical sensor node generates a pseudonym by using the randomly selected secret value; a partial private key is generated, and the KGC generates a temporary partial private key through the selected random value, the master key and the public key; a complete secret value is generated, and after the medical sensor node calculates a complete partial private key, a specific public and private key pair is set; generating a signature; verifying the signature; generating an aggregation signature; and aggregated signature verification. According to the method, a signature is linearly constructed through a secret value, a part of private keys and a plurality of hash functions, so that malicious attacks of malicious KGC and malicious medical sensor nodes on a sensor network are ensured to the greatest extent; the authentication of two communication parties, the integrity of data and the like are effectively ensured, so that the legality of identities and the validity of information can be ensured.

Description

technical field [0001] The invention relates to a method for privacy protection and secure communication suitable for wireless medical sensor networks, aiming at the research on interactive communication security and privacy protection between medical sensor nodes on wearable devices and medical institutions, and belongs to the wireless medical sensor network information and communication field. Background technique [0002] Nowadays, with the rapid development of wireless body area networks, Wireless Medical Sensor Networks (WMSNs) have gained great popularity. WMSNs are mainly composed of four parts, namely Medical Sensor Nodes (MSN), Key Generation Center (KGC), Signature Aggregator (SA) and Medical Server (MS). In the WMSNs environment, medical sensor nodes on patients monitor physical parameters including heart rate and body temperature. This data can then be transmitted to doctors for real-time processing and feedback. At the same time, there are many security and p...

AI Technical Summary

Problems solved by technology

Soon after, Zhan et al. analyzed Liu et al.'s improved scheme and pointed out that Liu et al.'s improved scheme could not resist malicious MS attacks

[0004] Although the above methods all claim to solve security and privacy issues, in fact none of their solutions can guarantee security

For these two types of adversaries, malicious KGC and malicious medical sensor nodes, many schemes often ignore these two types of adversaries in order to achieve certain advantages when constructing algorithms, which eventually leads to the insecurity of the scheme.

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