Vol 13 no.2
Titu Maiorescu University, Faculty of Informatics, Romania email@example.com, firstname.lastname@example.org
Chaotic cryptography has been widely studied in the last 20 years. A common feature in most of the proposed chaotic cryptosystems is the use of a single dynamical map in the encoding– decoding process, fact which leads to a low level security of its. In this paper we propose a new dynamical system based on transcendental equations suitable for secure encryption scheme. Its good cryptographic properties are proved using some specific tools from chaos theory, such as Lyapunov exponent, bifurcation diagram and attractor. In addition, we present a randomness test using the standard statistical test, the NIST battery.