Semiconductor memory card that records contents for trial and purchase, recording apparatus, reproducing apparatus, and sales method

摘要

A semiconductor memory card which allows consumers to access and purchase content while protecting the copyright of the content. The memory card has a unique media ID assigned thereto and includes a secure data area and a non-secure data area. The secure are is accessible by an apparatus whose authenticity is verified, and the non-secure area is accessible by the apparatus regardless of such verification. The secure area stores a first encrypted content which is generated by encrypting a first content key by using the media ID, and the non-secure data area stores trial data and purchase data which can be decrypted. The trial data includes a first content which is encrypted by using the first content key, and the purchase data includes a second content which is encrypted by using a second content key. The purchase data can be decrypted when fee processing is performed.