| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a memory device that is advantageous to prevent unauthorized use of confidential information. <P>SOLUTION: A memory device comprises: a first area in which first key data and unique secret data are stored and reading from the first area is restricted; and a second area in which encrypted unique secret data generated by encrypting the unique secret data is stored and reading from the second area is possible. The first key data is read from the first area and AES encryption is performed using the first key data and first numerical data received from the outside to thereby generate second key data, AES encryption is performed using the second key data and second numerical data received from the outside to thereby generate session key data, and unidirectional conversion is performed using the session key data and the unique secret data read from the first area to thereby generate authentication information data. <P>COPYRIGHT: (C)2013,JPO&INPIT |
