Secret Share Based Program Access Authorization Protocol for Smart Metering

Varieties of data security protection technologies have been developed in smart metering. However, there are almost no researches focusing on the security of smart meter parameters. In fact, smart meter parameters, such as the total/sharp/peak/flat/valley period time, can be written locally or remotely by power companies or users through sending programming commands. Modifying smart meter parameters arbitrarily may lead to the non-authenticity of users’ energy bills. This paper first considers the security of smart meter parameters and proposes a novel secret share based program access authorization protocol. The protocol introduces a program lock key which is used to lock the smart meter parameter modifying program. At least t participants (i.e. one user and t − 1 power companies) jointly can have the authorization to obtain the program lock key. We describe the security and efficiency analysis through theory and experiments.