Data exchange processing apparatus and data exchange processing method
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United States of America Patent
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Dec 17, 2013
Grant Date -
Jun 16, 2011
app pub date -
Jun 23, 2010
filing date -
Jun 30, 2009
priority date (Note) -
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Abstract
The data exchange processing apparatus pertaining to the present invention includes a cryptographic engine unit performing cryptographic processing and verification processing, a stream control unit outputting content while performing cryptographic processing of the content using the cryptographic engine unit, an unauthorized device list update unit verifying an unauthorized device list using the cryptographic engine unit, and a state management unit outputting a permission notification to the unauthorized device list update unit when detecting a low load section of the content according to metadata of the content and processing position of the stream control unit, the low load section being a section in which processing load on the cryptographic engine unit is lower than in other sections. The unauthorized device list update unit, when receiving the permission notification from the state management unit, causes the cryptographic engine unit to execute verification processing of the unauthorized device list.
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