Abstract
In this paper, we propose an independent efficient compression and encryption techniques for an image in multimedia applications. In order to reduce the volume of multimedia data over wireless channels, data compression techniques are widely used. Discrete cosine transform (DCT) is one of the major compression Scheme. In this paper, we present Dynamic bit-width adaptation scheme in discrete cosine transform (DCT) as an efficient compression technique. We select the appropriate operand bit widths that achieve significant reduction of power consumption. It is essential to protect the confidential image data from unauthorized access for multimedia applications. Hence, in this paper, we present a modification to the Advanced Encryption Standard (MAES) to reflect a high level security and better image encryption. The modification is done by adjusting the Shift Row Transformation.
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