As the promising next generation power system, smart grid can collect and analyze the grid information in real time, which greatly improves the reliability and efficiency of the grid. However, as smart grid coverage expands, more and more data is being collected. To store and manage the massive amount of smart grid data, the data owners choose to upload the grid data to the cloud for storage and regularly check the integrity of their data. However, traditional public auditing schemes are mostly based on Public Key Infrastructure (PKI) or Identity Based Cryptography (IBC) system, which will lead to complicated certificate management and inherent key escrow problems. We propose a certificateless public auditing scheme for cloud-based smart grid data, which can avoid the above two problems. In order to prevent the disclosure of the private data collected by the smart grid during the phase of auditing, we use the random masking technology to protect data privacy. The security analysis and the performance evaluation show that the proposed scheme is secure and efficient.
Octahedron ceria crystals were fabricated by one-step hydrothermal synthesis without using any hard-template, with Ce(NO 3 ) 3 ·6H 2 O being raw materials and polyvinylpyrrolidone (PVP) being surfactant. The content of ethanol plays an important role in the morphology evolution of as-obtained CeO 2 . At 200 • C, with the addition of ethanol into the water and by adjusting the ratio between ethanol and water from 1:3 to 3:1, the morphology of the as-obtained CeO 2 changed from solid octahedron to hollow irregular particles. When the ratio between ethanol and water is 1:1, prolonging the reaction time from initial 6 h to 12 h and ultimate 48 h, the morphology of the as-obtained CeO 2 growing from solid quasi-octahedron to regular octahedron, and then to hollow irregular particles. The electrochemical behavior of carbon paste electrode (CPE) modified by graphene/CeO 2 /CHIT nanocomposite membrane in 2.0 × 10-5 mol/L methylene blue (MB) containing 0.02 mol/L NaCl, and glassy carbon electrode (GCE) modified by MWNTs/CeO 2 /CHIT nanocomposite membrane in 1.0 mmol/L K 3 Fe(CN) 6 /K 4 Fe(CN) 6 (1:1) containing 0.5 mol/L KCl as the supporting electrolyte were measured respectively. The electrochemical measurements were carried out by cyclic voltammetric (CV) and differential pulse voltammetry (DPV). The synergistic effects of as-synthesized micro/nano CeO 2 and new carbon materials (MWNTs, graphene) on enhancing electrochemical signal were demonstrated, and a bright prospect of micro/nano octahedron CeO 2 on electrochemical application can be seen from this paper.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.