Semiconductor memory card and data reading apparatus, and data reading/reproducing apparatus

摘要

A semiconductor memory card comprising a control IC 302 , a flash memory 303 , and a ROM 304 . The ROM 304 holds information such as a medium ID 341 unique to the semiconductor memory card. The flash memory 303 includes an authentication memory 332 and a non-authentication memory 331 . The authentication memory 332 can be accessed only by external devices which have been affirmatively authenticated. The non-authentication memory 331 can be accessed by external devices whether the external devices have been affirmatively authenticated or not. The control IC 302 includes control units 325 and 326 , an authentication unit 321 and the like. The control units 325 and 326 control accesses to the authentication memory 332 and the non-authentication memory 331 , respectively. The authentication unit 321 executes a mutual authentication with an external device.