| 摘要 |
An information processing apparatus capable of management of copyright in the SDMI and management of copyright of a content transferred via the Internet. A content encrypted by a content key (Kc) into data (Enc (Kc, Content)) is recorded. Simultaneously with this, a header (Header), a certificate (Cert), data Enc (KR, Kc) created by encrypting the content key (Kc) by a root key (KR), and an enabling key block (EKB) are recorded. The header contains a content ID (CID), a license ID (LID), an URL, and a watermark (WM). Furthermore, a header signature (Sig (Header)) is added. This invention can be applied to an apparatus providing a content. |
