Super Scalar Architecture for Multimedia Hardware Encryption Using DWT
G. S. Syamala Rao, Dr.H.M. Mahesh, Ch V V S Srinivas, K. Rajasekhar · 2011
This paper introduces a zero-overhead encryption and authentication scheme for real-time embedded multimedia systems. The parameterized construction of the Discrete Wavelet Transform (DWT) compression block is used to introduce an free parameter in the design. It allows building a key space for lightweight multimedia encryption. The parameterization yields rational coefficients leading to an efficient fixed point hardware implementation. A clock speed of over 240 MHz was achieved on a Xilinx Vertex 5 FPGA. Comparison with existing approaches was performed to indicate the high throughput and low hardware overhead in adding the security feature to the DWT architecture. Index terms: Parameterization, Discrete Wavelet, Transform, Multimedia, encryption, Watermarking.