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The substitution table or S-box is considered as the core of the block ciphers. The good design of the S-box can increase the cipher security and simplicity. The aim of this paper is to demonstrate the efficiency of the dynamic S-boxes based on one-dimensional chaotic maps compared to classic S-box and to evaluate the more suitable one dimensional map to construct a dynamic S-box used in the AES algorithm...
The front end electronic (PMF) of the future ATLAS luminometer is described here. It is composed by a MAPMT and a compact stack of three PCBs which deliver the high voltage, route and readout the output signals. The third board contains a FPGA and MAROC, a 64 channels ASIC which can correct the non uniformity of the MAPMT channels gain thanks to a variable gain preamplifier. Its main role is to shape...
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