A Hybrid Encryption Model for Secure and Real-Time Cloud Communication

Abstract

With the rapid adoption of cloud computing, security concerns related to data confidentiality, 
integrity, and key management have become critical. Traditional hybrid encryption models, such as AES + 
RSA, provide strong security but suffer from high computational costs and transmission delays. This paper 
proposes a new hybrid encryption model—AES + Diffie-Hellman (DH)—to enhance cloud security while 
reducing computational overhead. By leveraging AES for data encryption and DH for secure key exchange 
without direct transmission, this model improves scalability and efficiency in real-time cloud applications. 
Performance analysis demonstrates that AES + DH offers significant advantages over AES + RSA in terms 
of encryption speed, decryption speed, and latency, making it ideal for real-time communication, VPNs, 
and secure messaging services.