Smart Grids are the efficient network for manage and distribute the electricity in the power grids. The smart grid is provided the two-way communication between customers and distributors. In this paper, double layer security technique is designed using steganography spatial domain and cryptography AES algorithm for smart grid database security. In the proposed technique, one time padding initialization vector (IV) is generated based on the edges information of cover image, which resolved the replay attack. The encryption of secret data is done using AES_IV algorithm. Further, the data embedding is done in smooth reason of the image using 2-bit LSB technique. At the receiver end, based on the edges information IV is determined and data extraction is done. The avalanche effect, Peak-signal-to-noise ratio, embedding capacity parameters are measured for performance analysis. The experimental results show that for different images, different IV is generated and quality of output image not degraded.

Steganography, Cryptography, Smart Grid, Avalanche Effect, Initialization Vector, One Time Padding

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