There are provided an information recording medium, an information
processing apparatus, an information processing method, and a computer
program, which can realize users' convenience for using content in
accordance with a license and copyright protection. An information
recording medium stores an encrypted content file including encrypted
content, usage right information of the encrypted content, and encryption
key information necessary for a decrypting process for the encrypted
content. Thus, a user can acquire a license (usage right information) and
key information necessary for decryption of the content, together with
the content, from the information recording medium, without acquiring the
license (usage rights) by connection to a license provider. Therefore, it
is no longer necessary to perform a process of acquiring the license
(usage rights) from the license provider when the content is to be used,
whereby user convenience is improved, and license-based content copyright
management can also be ensured.