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Data Integrity Assurance Using Fully Homomorphic Encryption based FHESIK Scheme in Cloud Storage


S. Hariharasitaraman and S.P. Balakannan
Abstract

Cloud storage empowers the users to access the data from anywhere at all the times over the internet. Storing data in cloud-based infrastructure enables the clients to deal with and preserve the data on the self-reliant platform. For integrity verification and checking the correctness of stored data on a cloud setting, probabilistic query, and verifiable computation techniques are used. For verifying the data integrity, Homomorphic Encryption schemes play a very crucial role, because the user wants to employ the cloud storage for storing client storage need, which is not necessary for any cloud provider when the original data will be accessed by the user. The Homomorphic scheme supports arithmetic operations like sum and product of the data encryption. We propose a Fully Homomorphic Encryption Scheme using Integers with Smaller key length (FHESIK), with advanced encryption standard (AES) on the cloud auditor setting. This AES mechanism is the symmetric block cipher which protects classified information. It has the ability to protect the sensitive information well into the next level. The significant characteristic of the proposed scheme is that this one can be executed as a random computation on the ciphertext, without decrypting the data. Thus, any public auditor can work on the outsourced data for integrity checking purpose without the need for decryption keys so that the original data cannot be altered. Any third-party audit can use the proposed scheme to validate the integrity of stored information without retrieving the whole file thereby the computational cost is reduced. In the proposed experimental setup, the proposed scheme is evaluated using the AES circuit provides a better verification result with lesser computational cost.

Volume 11 | 01-Special Issue

Pages: 639-651