Data Confidentiality and Security Enhancement for Cloud Storage utilizing OB-MECC Encryption

Abstract

Cloud computing is a developing technology which gets more attention from both the industries and academia. Once the data is sent to the cloud, the cloud service provider (CSP) alone is responsible for the data. The fear of seeing the stored and used sensitive raw data is the major barrier in the adoption of cloud services. So data security and privacy are the major issues which act as an obstacle in the adoption of cloud computing. More techniques are available to ensure the protection of data confidentiality. But they do not completely serve the purpose of protecting data. To overcome these drawbacks, this paper introduces the Obfuscation (OB) based Modified Elliptical Curve Cryptography (MECC) algorithm for protecting data from malicious attacks, which is termed as OB-MECC. First, the proposed method obfuscates the data before they are uploaded into the cloud. The proposed technique uses different methods like substitution cipher, Ceaser cipher, position update, binary conversion, 8-bit binary conversion, two complex() decimal(), and ASCII() to obfuscate the original data. After that, the obfuscated data is encrypted using the MECC algorithm. After encryption, the data is retrieved from the cloud and decrypted by reversing the encryption and obfuscation process to get the original data.