Access Control in A Data Processing System Using Data Item Signatures
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United States of America Patent
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app pub date -
Jan 17, 2012
filing date -
Apr 11, 1995
priority date (Note) -
Abandoned
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Abstract
A device maintains multiple signatures, including at least one signature for each of a plurality of data items. At least corresponding signature for a data item is based at least in part on a given function of at least some of the contents of that data item. The device receives a particular sequence of bits and determines at least one signature for that particular sequence of bits, based at least in part on the given function of at least some of the particular sequence of bits. The device determines, based at least in part on the signature for the particular sequence of bits, and using the multiple signatures, whether the device may access the particular sequence of bits.
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