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Abstract

An authentication process for a memory device that stores a host identification key and a host constant, includes generating a first key based on the host constant, decrypting encrypted secret identification information read from the external device using information generated with the host identification key to generate a secret identification information, generating a random number, generating a session key using the first key and the random number, generating a first authentication information by processing the secret identification information with the session key in a one-way function operation, and authenticating access to the memory device based on whether or not there is a match between the first authentication information and a second authentication information that is generated by the external device with the host constant transmitted to the external device.

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First Claim