Short Signature And Its Application In Railway Bridge Detection System

Railway bridges are an important part of national infrastructure and modern transportation.Ensuring their safety is of great significance to the smooth operation of trains and the safety of people's travel.The railway bridge detection system based on the Internet of Things technology can detect the changes of bridge structure in real time by using some detection equipment,which can effectively prevent the occurrence of major safety accidents of bridges,and eliminate the potential safety hazards of bridges in time.However,in the open Internet environment,the railway bridge monitoring system has some network security problems such as information leakage and tampering in the process of data interaction.Therefore,the data security transmission of bridge detection system in open network environment has become an important research direction of current bridge detection.Digital signature is one of the important research directions of modern cryptography,which has the characteristics of anti-counterfeiting,anti-tampering and anti-repudiation.Short signature schemes become the optimal signature schemes in the scenarios of hardware constraints or communication bandwidth constraints due to their short signature length and the faster signature speed.Therefore,how to combine short signature scheme with bridge detection system has very important research value.This paper mainly studies identity-based short signature scheme and its application in railway bridge detection system.The main research results are as follows:1.Two short signature schemes are proposed by using bilinear pairings.(1)On the basis of Boneh's idea,an efficient identity-based short signature scheme is constructed.What's more,it is proved that the scheme is existentially unforgeable under adaptive chosen message and identity attack in the random oracle model.(2)According to the definition of forward security,an identity-based short signature scheme with two-way security is proposed.Subsequently,under random oracle model and the assumption of difficult problem,the scheme is proved to be existentially unforgeable.CAAk-(3)Based on Pairing-Based Cryptography(PBC)designed by Stanford University,the above two schemes are implemented,and the core code is given.2.Based on the proposed short signature scheme,a monitoring data transmission protocol based on the short signature scheme for railway bridges is designed.Subsequently,the protocol is simulated experimentally.The results show that the protocol can be applied to the bridge detection system,which effectively solves the problems of lack of integrity protection and identity reliability authentication in the data transmission process.