Abstract
Conference Title: 2015 12th International Multi-Conference on Systems, Signals & Devices (SSD) Conference Start Date: 2015, March 16 Conference End Date: 2015, March 19 Conference Location: Mahdia, Tunisia In this paper, a new approach for encryption system based on a block cipher algorithm and a logistic function is proposed. The main goal of the present work is to study the weaknesses of different operating modes in order to propose appropriate modifications. The experimental results show that the proposed modifications can be easily implemented and they do not need high level of consumption or hardware occupation. In addition, the security analysis proved the resistance of the new algorithms to statistical attacks, differential attacks and initial key sensibility.