Abstract: To share data in a smart grid safely and efficiently, AEDS (Attribute-Based Encryption Secure Data Sharing) algorithm is proposed. In AEDS, we propose a practical attribute-based encryption scheme for securing data sharing and data access in smart grid architectures with the added advantage of obfuscating the access policy. This is aimed at preserving data privacy in the context of competing smart grid operators. We build our algorithm on linear secret sharing scheme for supporting any monotone access structures and thus enhancing the expressiveness of access policies. The performance analysis shows that the proposed AEDS algorithm effectively improves the access efficiency and enhances the security of access data.

Key words: smart grid, data sharing, attribute-based encryption, linear secret sharing, access policy