Authentication Entity Device, Verification Device and Authentication Request Device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
N/A
app pub date -
May 19, 2014
filing date -
Jul 7, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A verification device transmits challenge information to a first entity device, and for each authentication context received in return, verifies that challenge information identical to the challenge information transmitted in advance is described, to thereby confirm that the authentication context is the current one. As a result, a repetitive attack in which the past authentication context is repeatedly used is prevented and the security against repetitive attacks is improved.
First Claim
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