International Research Journal of Education and Technology

Rapid distribution of Cloud Computing has brought it with several security problems, especially related to centralized larger management systems that offer individual points. This work offers a new solution to strengthen cloud protection through a combination of blockchain -based key control, AES -256 encryption and stagnographic methods. The system provides tamper -proof encryption in audio files, decentralized keys and secure data hidden in audio files through the minimum important bit (LSB) stagnography. By using the key exchange for integrity control and SHA-256 Elliptical Curve Cryptography (ECC), the proposed solution avoids threats from unauthorized access, internal formula attacks and data violations. Experimental results suggest that the system is possible to provide a scalable, transparent and irreversible cloud of cloud.

Keywords— Cloud Security, Blockchain, AES Algorithm, Key Management,  Data Encryption, Cryptography, Cloud Storage ,Blockchain Security