Multiauthority Traceable Ring Signature Scheme for Smart Grid Based on Blockchain

Abstract

As the next-generation power grid system, the smart grid can realize the balance of supply and demand and help in communication security and privacy protection. However, real-time power consumption data collection might expose the users’ privacy information, such as their living habits and economic conditions. In addition, during the process of data transmission, it may lead to data inconsistency between the user side and the storage side. Blockchain provides tamper-resistant and traceable characteristics for solving these problems, and ring signature schemes provide an anonymous authentication mechanism. Therefore, in this work, we consider the applications of ring signature scheme in smart grid based on blockchain. We introduce the notion of multi-authority traceable ring signature (MA-TRS) scheme for distributed setting. In our scheme, there is an auditing node that can distinguish the identity of the real signer from the ring without any secret information. Last but not least, we prove that the proposed scheme is unforgeable, anonymous, and traceable.

Privacy protection and data coordination mechanism of supply chain based on blockchain

“…Zhou et al [6] built a new logistics service data sharing model, and compared and analyzed the two models on the basis of innovation. Blockchain also has many applications in authentication, rights management, etc [7][8] . Through the above research and analysis, it is necessary to optimize the supply chain module because the problems involved in the supply chain system are complex and changeable.…”

Auditable anonymous authentication scheme for cross-chain data transmission

“…We compare our scheme to the four authentication schemes [3], [8], [14], [15] for blockchain-based with respect to signing cost, verification cost. The results are listed in Table 1: According to the table, we can easily observe that ours pseudo-identity anonymous authentication scheme based on TEE has lower computation costs compared to the other anonymous authentication schemes.…”

Efficient Linkable Ring Signature Scheme over NTRU Lattice with Unconditional Anonymity

“…For example, in the system of blockchain [6], if some user signs the same amount of money twice, LRS will help the veri er detect it and the veri er will deny the second signature, thus avoiding the so-called "double spending" problem. In smart grid systems [7], the electricity consumption data of users are automatically collected by the smart meter, and speci c electricity consumption information is fed back to the service provider. us, malicious attackers can infer the life and rest rules of the user from the large amount of electricity consumption data recorded by the smart meter.…”

“…It is not difficult to design a RS scheme with unconditional anonymity. In fact, most traditional RS schemes can satisfy unconditional anonymity [1,[9][10][11][12][13][14][15][16]. However, it is not an easy work to construct a UALRS scheme.…”