Open AccessDiffie-Hellman Key Exchange through Steganographied Images
Author(s) -
Amine Khaldi
Publication year - 2018
Publication title -
revista de direito, estado e telecomunicações
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.188
H-Index - 3
eISSN - 1984-9729
pISSN - 1984-8161
DOI - 10.26512/lstr.v10i1.21504
Subject(s) - key exchange , key (lock) , computer science , computer security , authenticated key exchange , digital signature , bitmap , steganography , diffie–hellman key exchange , data exchange , secure channel , public key cryptography , channel (broadcasting) , encryption , computer network , image (mathematics) , world wide web , artificial intelligence , hash function
Purpose – In a private key system, the major problem is the exchange of the key between the two parties. Diffie and Hellman have set up a way to share the key. However, this technique is not protected against a man-in-the-middle attack as the settings are not authenticated. The Diffie-Hellman key exchange requires the use of digital signature or creating a secure channel for data exchanging to avoid the man-in-the-middle attack.
Methodology/approach/design – We present a Diffie-Hellman key exchange implementation using steganographied images. Using steganography made invisible the data exchange to a potential attacker. So, we will not need a digital signature or creating a secure channel to do our key exchange since only the two concerned parts are aware of this exchange.
Findings – We generate a symmetric 128-bit key between two users without use of digital signature or secure channel. However, it works only on bitmap images, heavy images and sensitive to compression.