Abstract
We propose a new signal security system and its VLSI architecture for real-time multimedia data transmission applications. We first define two bit-circulation functions for one-dimensional binary array transformation. Then, we exploit a chaotic system in generating a binary sequence to control the bit-circulation functions defined for performing the successive transformation on the input data. Each eight 8-bit data elements is regarded as a set and is fed into an 8 × 8 binary matrix being transformed on each row and each column of the matrix by these two bit-circulation functions such that the signal can be transformed into completely disordered data. The features of the proposed design include low computational complexity, regular operations suitable for low-cost VLSI implementation, high data security, and high feasibility for easy integration with commercial multimedia storage and transmission applications. We have performed Matlab simulation to verify the functional correctness of the proposed system. In implementing the system, a low-cost VLSI architecture has been designed, verified, and physically realized based on a 0.35 µm CMOS technology. The implementation results show that the proposed signal security system can achieve 117 Mbytes/s data throughput rate that is fast enough for real-time data protection in multimedia transmission applications.
Highlights
With the great demand in digital signal transmission[1, 2] and the big losses from illegal data access, data security has become a critical and imperative issue in the multimedia data transmission applications
We propose a new signal security system and its VLSI architecture for real-time multimedia data transmission applications
In implementing the proposed system, we present a low-cost VLSI architecture that has been designed, verified, and physically realized by using Verilog hardware description language (HDL), Synopsys logic synthesis tool design compiler (DC), and Avanti layout tools (Apollo) based on a 0.35 μm CMOS technology
Summary
With the great demand in digital signal transmission[1, 2] and the big losses from illegal data access, data security has become a critical and imperative issue in the multimedia data transmission applications. The position permutation algorithms scramble the original data according to some predefined schemes It is simple but usually has low data security. The combination form performs both position permutation and value transformation. It has the potential of high data security. We propose a new signal security system and its VLSI architecture for real-time multimedia data transmission applications. We exploit a chaotic system in generating a binary sequence to control the bit-circulation functions for performing the successive data transformation on the input data. The implementation results show that the proposed signal security system can achieve 117 Mbytes/s data throughput rate at the cost of silicon area of 3.59 mm2 This data-processing rate is fast enough for realtime data protection in multimedia data transmission applications.
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