Methods and apparatus for multi-level dynamic security system
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United States of America Patent
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Jan 4, 2011
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app pub date -
Oct 1, 2007
filing date -
Apr 9, 2003
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Abstract
Methods and apparatus for converting original data into a plurality of sub-bands using wavelet decomposition; encrypting at least one of the sub-bands using a key to produce encrypted sub-band data; and transmitting the encrypted sub-band data to a recipient separately from the other sub-bands.
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