Implementing Secure Data Sharing and User Authentication in Mobile Cloud Computing via SHA-3 and ECC

The digital life of today's connected, always-on consumer means it is more critical than ever to offer secure data transmission and user authentication with the increase use in mobile services and cloud computing. High resource bounds for encryption techniques such as RSA are ineffective on mobile devices. To counter this, SHA-3 and Elliptic Curve Cryptography (ECC) provide more secure and efficient alternatives as well. Mobile cloud computing is the advanced computing platform in the future which point most of the work will be done by smart mobile devices. ECC For Encryption + Sha-3 for hashing will increase security and speed, maintaining data integrity and reducing computational complexity on mobile devices. This suggestion is a mix of ECC (for encryption user data) and SHA-3 (to generate secure hash value), pretty solid without needing too big keys that not so good for mobile environment. The system was evaluated with respect to encryption/decryption time, collision resistance that affected the size of secure digest and performance efficiency. As the performance tests show it had 93% efficiency in comparative with normal encryption and hashing techniques that are used these days (Example ECC + SHA-3 worked better compared to other mentioned ways). The method is used in several high-throughput and production applications (including DynamoDB) as its low latency with 99.9999999% collision resistance makes it especially well-suited for use within mobile cloud services. It also improved security. The proposed technique is integrated with SHA-3 and ECC therefore, it serves as a better solution for the efficient user authentication security along data sharing in mobile cloud computing. Advantages: Like QKD, it is secure from all vulnerabilities of the usual cryptographic methods and has excellent trade-offs between security vs performance especially on limited resources i.e., mobile devices.