Abstract:  In view of the low accuracy and efficiency of Internet of Things authentication due to the influence of noise, a new optimization method of Internet of Things authentication based on improved RSA(Rivest-Shamir- Adleman) algorithm was proposed. In this method, a transmission channel model is constructed to obtain user identity information and a noise reduction model is constructed to preprocess user identity data. Based on the processed data, the user identity characteristic information is extracted to build the Internet of Things identity authentication algorithm. On this basis, RSA algorithm is introduced to encrypt and process user identity information data to realize the optimization of Internet of Things identity authentication. In addition, the proposed method is not easily affected by noise environment. Under the condition of noise, the maximum error between the authentication rate and the ideal authentication rate is only 3.7%. Therefore, the proposed method is feasible and effective. 

Key words: rivest-shamir-adleman ( RSA) algorithm, internet of things, identity authentication, data acquisition, privacy protection