Secure File Storage on Cloud Using Hybrid Cryptography

Abstract

This paper addresses the critical challenge of unau- thorized access to sensitive data stored on cloud platforms. As the volume of such data continues to grow, ensuring its confidentiality, integrity, and availability has become increasingly important. The research proposes a secure cloud storage solution that integrates advanced cryptographic techniques. Specifically, the study utilizes the Advanced Encryption Standard (AES- 256) for efficient data encryption and the RSA algorithm for secure key management, ensuring that only authorized users can access the data. To further enhance security, the Secure Hash Algorithm (SHA-256) is employed to verify data integrity by generating hash values before encryption and after decryption. The proposed solution demonstrates improved protection against unauthorized access and data tampering, providing a robust framework for cloud-based file storage. Through the integration of these methodologies, this research contributes to the ongoing efforts to secure sensitive data in cloud environments, highlighting the importance of adopting advanced cryptographic measures in the face of evolving cybersecurity threats.