New Digital Image Encryption Scheme based on Elliptic Curve Isogenies

Samia Bouaziz, Ramzi Hadaji, Abdellatif Mtibaa

Elliptic curve, Encryption, Digital Image, Ramanujan graph.

Due to the complexity of modern technological exchanges, the need of the security of the image remains till now a challenging problems. In this paper, we present a new encryption scheme based on a non-classical aspect of the elliptic curve cryptography and the Ramanujan graph to encrypt JPEG compressed image. Our algorithm operates on the hardness to predict the exact walk of the Pizer graph formed by the elliptic curve isogenies. The proposed approach has been compared with classical protocols.