Implementation of Lightweight Encryption for Real Time Multimedia System using Discrete Wavelet Transforms

Abstract

A discrete wavelet transform (DWT) is any wavelet transform for which the wavelets are discretely sampled. As with other wavelet transforms, a key advantage it has over Fourier transforms is temporal resolution as it captures both frequency and location information. DWT filter provides a high compression ratio and image reconstruction quality so as to serve the end user requirements. Some other desired features include low hardware cost, low power requirements and high throughput of the system. The purposed DWT 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 a free parameter in the design