The Optimization And Implementation Of A Hybrid Multivariate Digital Signature System On Wireless Sensor Networks

Recent years Wireless Sensor Network(WSN) has become a major concern of theinternational community in the field, which is a highly multi-disciplinary and knowledge ofhighly integrated hot research.WSN is composed of a large number of low-power sensornodes deployed in the region to monitor.These nodes form a multi-hop, self-organizingnetwork via wireless commnunication,work together to monitor and transport the informationof the objects through the network, and send to the oberver for analysis.It has a very widerange of applications,which can be used in national defense, industrial and agricultualcontrol, urban management, biomedical, environment monitoring, disaster relief, remotecontrol and other areas.Tiny OS, which is designed by UC Berkerly, is a event-drive operarting system forlow-power wireless devices, mainly used for sensor networks, smart home and smartmetering,etc. It has the advantages of high concurrency, low power, small space requried andso on, many domestic and foreign universities and institutions related to the use of thisplatform to conduct research. The operating system itself and application run on the systemare developped by Nes C, which is an extension of C programming language,mainly used forthe development of sensor network programming.In some areas, the information transfer between the various nodes of WSN is greatimportant, so we need to ensure the security of the information delivery. Traditional WSNsecurity research is carried out in a symmetric cryto-system, studies in recent years show thatthe pulic key encryption system can also be used in WSN, the famous case is Tiny ECC.Tiny ECC is a library based on elliptic curve cryptography(ECC),mainly used for Tiny OS,consists key agreement algorithms, digital signature, data encryption and decryption.However, with the emergence of quantum computers, the traditonal public keycryptosystem based on the integer factorization and discrete security will be deadlythreatened.The Multivariate Public Key Cryptosystem(MPKC), which is a public keycryptosystem, is expected to resist the attack of a quantum computer.At the present stage, thesystem has matured gradually, especial its signature schem.The article aims to implement and optimize a hybrid signature schem of MPKC. Firstly,implement the signature scheme on sensor ndoes based using Tiny OS. Then use the simulatortool TOSSIM to simulate the schem for evaluating the logic of the scheme.Finally, apply thesignature scheme on the actual WSN and diffierent hardware platform, analyze its perfomencein terms of speed and storage, and propose some optimations.