Authentication system, authentication method, authentication apparatus, and authentication method therefor
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United States of America Patent
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-
Apr 1, 2008
Grant Date -
Mar 14, 2002
app pub date -
Apr 30, 2001
filing date -
Apr 28, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An information holding medium stores the common key of the user used in the common-key encryption method. In response to a user authentication request sent from an information processing apparatus, the user is authenticated by the common-key encryption method by using the common key stored in the information holding medium of the user. Only when the user has been authenticated, predetermined processing for making the information processing apparatus authenticate the user by the public-key encryption method is performed.
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