Data security system and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Feb 22, 2000
Grant Date -
N/A
app pub date -
Jan 3, 1997
filing date -
Jan 3, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A data security system and method for providing a cryptographic process such as the Data Encryption Standard comprises a microprocessor having a programmable hardware element such as a field programmable gate array interfaced to the processor bus. The predetermined ordered sequence of operations which form the cryptographic process are parsed into hardware-centric operations such as bit manipulations, table look-ups and logic operations which are efficiently performed in hardware, and into software-centric operations such as data processing and state machine control. Hardware-centric operations are performed in the programmable hardware device, and overall control of the system is performed under microprocessor control.
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