Storage apparatus and authentication method

A storage apparatus comprising:

• a drive part to which a recording medium that is an access target is loaded, and from which the recording medium is unloaded;
• an enciphering key control part configured to judge and confirm a validity of a data access from a request source apparatus based on authorization information that is received from the request source apparatus and authorization information that is created from an enciphering key included in enciphering key information received from an enciphering key management apparatus according to an arbitrary algorithm;
• and
• a control part configured to make the data access with respect to the recording medium that is loaded into the drive part using the enciphering key in response to an access request from the request source apparatus, if the validity of the data access is confirmed by the enciphering key control part,
• wherein the authorization information received from the request source apparatus includes a unique code that is created from the enciphering key according to the arbitrary algorithm if an authentication is successful in the enciphering key management apparatus in response to an authentication request from the request source apparatus.