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The paper deals with the synchronization of a new statistically highly performant function firstly introduced by Lozi. The synchronization is reached via observers which reconstruct all the states of the original system, using only a partial information of it. The map has been rewritten as a piece-wise affine one, which allows to design two types of(More)
The paper presents a novel chaotic encryption algorithm which can be used to improve the communication security. An uncomplicated process of chaotic substitution permutation network (SPN) with variable control parameters is proposed to form a robust chaotic cryptosystem. A new chaotic generator, firstly proposed by Lozi, is used for this purpose. For the(More)
In this paper an improved chaotic switching algorithm based on modified Lozi system is applied. Generally speaking, the main advantage of the switched encrypted model is its robustness to the noise, while the main drawback is the slow processing speed. In this article we propose to gain model productivity by adjusting parameter in Lozi chaotic generator.(More)
The increasing number of e-transactions requires more secure and innovative schemes for secure information storage and transmission. Since the encryption should be unique for each transaction, there is a big necessity of new generators of very huge numbers of encryption keys, and chaotic random number generators seem to be perfectly suitable for this(More)
This paper deals with chaotic cryptosystem and observer-based chaotic synchronization of Lozi chaotic generator for secure information transmission. Increasing the size of the secret key has been achieved thanks to the G-interval parameter method for observability analysis of a Lozi chaotic generator.
The paper deals with the synchronization of two chaotic Sigma-Delta Modulators. The synchronization is reached via two modulators: one of the modulators is used to code the input information into a bitstream, while the second demodulator is used to decode the obtained bitstream into the original state of the applied input signal. In this way, the system(More)
In this paper, we design and implement under Matlab/Simulink some efficient digital chaotic generators for data encryption/decryption process. Some of these generators (logistic, PWLCM, Frey) are known, the others xcos(x), xexp[cos(x)], 2-D Tmap) are proposed. A number of designed generators contain cascaded layer to improve the statistical properties of(More)
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