Key exchange based on Diffie-Hellman protocol and image registration

Rachid Rimani (1- University of Sciences and Technology of Oran Mohamed Boudiaf, LACOSI Laboratory, USTOMB, ALGERIA 2- University Mustapha Stambouli of Mascara, ALGERIA)
Naima Hadj Said (University of Sciences and Technology of Oran Mohamed Boudiaf,, USTOMB, ALGERIA)
Adda Ali Pacha (University of Sciences and Technology of Oran Mohamed Boudiaf, LACOSI Laboratory, USTOMB, ALGERIA)
Ozen Ozer (Kırklareli University)

Indonesian Journal of Electrical Engineering and Computer Science
Vol 21, No 3: March 2021

Nowadays, with the advences in ICT and rapid development of mobile internet; media information shared on the various communication networks requires the existence of adequate security measures. Cryptography becoming an effective way to meet these requirements and for maintain the confidentiality. However, communicating with encrypted messages requires secret key exchange, which is a part of a complex protocol. In this paper, we propose a new method for exchanging key based on Diffie-Hellman protocol and image registration with fast fourier transform, the principle of this method consists to concealing the key in a set of transformed images. Therefore, image registration allows finding transformations between images, which become a tool for recovering the key by the receiver.