An efficient data protection scheme with blockchain in IoT

Abstract

With the development of science and technology, all kinds of data are generated in our daily life. While data analysis brings convenience, it also poses threat to users' privacy. This paper proposes a data security privacy protection model with blockchain in IoT. First, encrypt data before it is stored in the cloud. Secondly, in order to verify user identity and ciphertext safely, an efficient certificateless signature scheme is proposed. The signature scheme is security under random oracle model and time performance is efficient.