Research on Secret Sharing Scheme in CPS Environment

Abstract

With the rapid development of Cyber-Physical System (CPS) technology, the security requirements of data communication in CPS environment are constantly improving. Data communication systems usually use encryption technology to encrypt information. The core of encryption is the security of key management. The traditional key management method is to back up the key repeatedly and store it in different places, but it still cannot fundamentally ensure the security and confidentiality of information. Using secret sharing technology can solve the above problems. The so-called secret sharing system means that the secret S is provided to all members of a participant set for separate storage. Only when all members of an authorized subset in set P show their secret sharing, the shared secret S can be recovered, and any member of the unauthorized subset cannot get any information secret. This paper first introduces the architecture and technology of CPS and analyzes the security threats of CPS. After studying the typical secret sharing scheme, this paper analyzes the security of the secret sharing scheme and the prevention measures of sharing fraud in detail.