| 摘要 |
A method is provided for accessing a memory device that stores a master key and at least one encrypted data file and that includes a data-key storage portion being encrypted using the master key and having at least one data key. In the method, a control unit is configured to receive a personal identification number (PIN), to determine whether the received PIN is authentic, to obtain the master key from the memory device upon determining that the PIN is authentic, to decrypt the encrypted data-key storage portion using the master key to obtain the at least one data key, and to decrypt the at least one encrypted data file using the data key to obtain a data file.
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