可公开验证的属性基数据可恢复性证明方案 postprint

Abstract: When the user stores the data on an dishonest server, the integrity of the data needs to be verified, so the proof-of-retrievability (POR) system is proposed. Aiming at the problem of identity-based cryptosystem used in most of the existing solutions, a more intuitive and flexible attribute-based cryptosystem is adopted to design an attribute-based data recoverability proof scheme. This paper firstly proposed definition and model of an attribute-based proof of retrievability with public verifiability, then, constructed an attribute-based proof of retrievability with public verifiability, finally, proved its correctness and security.