A hybrid model to secure the exchange of DH keys

The Diffie-Hellmann(DH) algorithm is an algorithm that allows the exchange of secret keys, shared via a channel that is not necessarily secure to ensure communication between two users. When exchanging DH keys, none of the users have proof that they are communicating with the right interlocutor, because the shared keys can be detected by a “Man in the middle”. In this article, we propose a model called DRA which combines the three encryption algorithms DH, RSA (Rivest Shamir and Ademann) and AES (Advanced Encryption Standard), it aims to improve the security of DH key exchange especially with the evolution of computing power and computer speeds. The results obtained in this article show the efficiency of our model compared to the S-SEJAD model which itself has brought a real improvement compared to existing solutions such as S-WANE, New-Two-Pass, STS, HMQV.