A Critical Analysis of Multilevel Cryptographic Techniques for Enhancing Cloud Security

Abstract

Far and above, cloud computing has transformed the digital infrastructure through scalable and affordable solutions but on one hand, it has enhanced security issues and concerns, illegal access, information leakage, and denial of services. Conventional encryption systems, such as the AES, RSA, and ECC, are effective due in part to their allowance in providing solid security when used individually; however, they are weak in terms of guaranteeing viable security across the board with regards to performance metrics. In the present paper, a critical analysis of multilevel cryptography solutions aimed at providing security to cloud is provided by considering a hybrid AES-RSA model. The design proposal takes advantage of both AES that supports fast encryption of data and RSA to support robust encryption keys management, and effectively integrates the speed of symmetric encryption design with the strength of asymmetric cryptography. The simulation measures adopted in evaluating performance include the simulation measures like avalanche effect, throughput, time complexity, and CPU utilization. Findings show that the hybrid model is able to outperform in the avalanche effect (average 98.05 percent), balanced throughput, decreased time complexity, and the minor CPU burden in comparison with standalone algorithms. Such results are confirmatory of the scalability, efficiency, reliability of the proposed solution in cloud environments. Although it has restrictions like the mandatory use of certain types of hardware and the necessity to test the data of multimedia, the framework has a great potential that can be used in the future to use the quantum-resistant encryption and the enterprise cloud by connecting it to them.