Ariel M. Sison

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This paper is directed towards the development of an improved DES to secure the data using smart cards. An improved Data Encryption Standard has been developed by incorporating an ODD/EVEN bit conversion to the existing DES algorithm. The proposed algorithm is expected to provide greater security to further protect the data in Smart Cards. The data is(More)
The Lempel-Ziv-Welch (LZW) algorithm has provided attractive data compression for storage medium with limited space. This study is motivated to improve database performance by compressing some of its attributes using LZW compression algorithm. Simulation results show that LZW is useful for practical purposes. Data compression will speed up data transmittal(More)