Software security for gaming devices
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United States of America Patent
Stats
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Jan 24, 2012
Grant Date -
Sep 17, 2009
app pub date -
May 22, 2009
filing date -
Mar 17, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A secure smart card or other secure modular memory device is plugged into (or otherwise connected to) a port of a game controller board internal to a gaming machine, where it is not accessible to a player. The smart card is programmed to detect an encrypted “challenge” message from the host CPU and output an encrypted “response.” If the host CPU determines that the response has the expected properties, then the host CPU verifies that the game program (an application program) is also is authentic, and the game can be played. The challenge/request exchange may be performed periodically to ensure the smart card is still installed. If the response is improper, then the host CPU will issue a halt command to halt play of the game.
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