Chung-E Wang

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This paper describes cryptographic methods for concealing information during data compression processes. These include novel approaches of adding pseudo random shuffles into the processes of dictionary coding (Lampel-Ziv compression), arithmetic coding, and Huffman coding. An immediate application of using these methods to provide multimedia security is(More)
The amount of data stored digitally continues to grow dramatically across many fields, along with the need for algorithms to efficiently compress this data for storage and transmission. In this paper, we describe an improvement of LZW data compression. We employ a dynamic dictionary, in which least recently used and aging algorithms are used to replace(More)
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