Data encrypting/decrypting conversion methods and apparatuses and data communication system adopting the same
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United States of America Patent
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Aug 12, 2003
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N/A
app pub date -
Aug 4, 1998
filing date -
Aug 7, 1997
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Abstract
Encrypting/decrypting conversion method and apparatus capable of controlling dynamically cyclic shift independent of data to undergo encrypting/decrypting conversion includes two or more different fixed circulating shift processing means for shifting cyclically the data by a fixed bit number leftward or rightward, a cyclic shift processing selecting means for selecting fixed cyclic shift processing means. The selecting sequence determined by the cyclic shift processing means is determined on the basis of data for determining the shift number selecting sequence.
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