Application of improved RSA algorithm in wireless sensor network
Dahui Hu · Journal of Computer Applications · 2012
In order to solve the problems such as slow calculation and great energy consumption caused by the public-key-cryptosystem-based key management in wireless sensor network,an improved RSA public-key algorithm was suggested in this paper.In the new algorithm,Montgomery algorithm had been applied to transform large number's modular exponentiation to exponentiation modular.At the same time,the Chinese Remainder Theorem(CRT) was also employed to change modular exponentiation to congruence equations.The security analysis and experimental results show that the computation expenditure has been reduced by 55 percent,the storage space reduced by 67 percent and the life cycle of nodes increased by 21 percent in the new algorithm.The new algorithm provides better safety of the key as well as less computation and smaller storage space,which is more suitable for the wireless sensor network with low computation ability and limited energy.