Secure File Storage in Cloud Computing Using a Modified Cryptography Algorithm
Manya Smriti, Shruti Varsha Venkatraman, A. Devesh Raj, Vaishnavi Shukla, Aswani Kumar Cherukuri · Advances in systems analysis, software engineering, and high performance computing book series · 2021
This chapter investigates the security issues identified with the file cloud storage to ensure the security of client information in cloud information server. The authors have proposed a modified RSA algorithm with multiple keys and CRT to ensure confidentiality of data coupled with hashing through SHA-512 to maintain integrity. This work has made a secure data exchange app where files are encrypted using the RSA-CRT algorithm and hashed later. On successfully implementing the work, they observed that the proposed technique is more secure than the original RSA algorithm and RSA-CRT. Furthermore, it enhanced the algorithm performance for decryption because it employed the CRT for decryption; thus, the proposed technique proved to be faster than RSA with multi keys.