Ciphertext comparable method based on BCP
Shaoxiong Xie, Jun Ye · Procedia Computer Science · 2024
With the rapid development of science and technology, data has been called a very important factor of production. And in the process of data utilisation, the comparative computation of data needs to be used in many cases, and data security needs to be guaranteed. Therefore, it is necessary to study the schemes that support ciphertext comparison computation. At the same time, since the current schemes require the participation of trusted parties and online execution by users, they do not meet the needs of applications. In this paper, we study the problem of offline execution of ciphertext comparison, and propose a ciphertext comparison scheme that can be executed offline, while removing the participation of trusted parties. The security analysis proves the security of this scheme, and also shows the usability of this scheme in the comparison of other schemes.