Authenticator, authenticatee and authentication method
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United States of America Patent
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Jan 10, 2017
Grant Date -
Sep 25, 2014
app pub date -
Feb 17, 2012
filing date -
Jun 17, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
According to one embodiment, an authentication method between an authenticatee which stores key information having a data structure composed of a key transition record, secret information XY of a matrix form, and secret information XYE which is created by encrypting the secret information XY, and an authenticator which authenticates the authenticatee, includes selecting, by the authenticator, a record corresponding to a device index of the authenticator from the key information which is received from the authenticatee, and decrypting the record by a device key, thereby taking out a key transition, and executing, by the authenticator, a decryption process on the secret information XYE, which is received from the authenticatee, by using the corresponding key transition, and sharing the secret information XY.
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