A content reproduction system that allow the user to rent or purchase any
desired contents for reproduction without depending on a predetermined
type of information of the user. The content reproduction system
includes: a recording medium storing a license ticket including an
encrypted master key; and a reproduction apparatus that receives from the
user a request for a selected content and the information of the selected
content, acquires distribution content information corresponding to the
selected content, stores it in association with the license ticket into
the recording medium. When reproducing the content, the reproduction
apparatus generates a content using an encrypted content decryption key
and an encrypted content that are contained in the distribution content
information, and using a master decryption key information corresponding
to the distribution content information, and reproduces the generated
content.