摘要:
A user selection of one or more of a plurality of content is received. The selected content is encrypted by a first encryption key that is remote and unknown to the distribution server. Payment information associated with the user selection is also received and verified. The selected content from is retrieved from a remote database. The first encryption key corresponding to the selected content to decrypt the encrypted content corresponding to the user selection is obtained. Decryption is performed by a hardware-based engine of the distribution server that is isolated from a host processor of the distribution server. The content corresponding to the user selection is encrypted according to a second encryption key that is known to the distribution server.
摘要:
An information recording medium includes a lead-in area and a data area for storing contents information. The lead-in area includes a first lead-in information area and a second lead-in information area. The first lead-in information area corresponds to a first playback mode. The second lead-in information area corresponds to a second playback mode different from the first playback mode. The first lead-in information area has a first depth and is designed for storing lead-in information related to the contents information stored in the data area. The second lead-in information area includes pre-pits having a second depth greater than the first depth. The pre-pits represent predetermined information, such as information of copyright protection, related to the contents information stored in the data area.
摘要:
The invention relates to a method of receiving and securely recording digital data comprising a step for recording said digital data on a secured disk by a recorder/receiver belonging to a determined secured domain comprising several equipment items and defined by an identifier, a step for recording on the secured disk the identifier of the domain of the recorder/receiver to define this domain as the only domain in which the reproduction/copying of the multimedia content is authorized, wherein it comprises a prior step for recovering a disk key from the secured disk, and in that the domain identifier is encrypted by said disk key and the digital data is scrambled by title keys, said title keys being encrypted by said disk key. The invention also relates to a method of securely distributing digital data, an access device and a recorder/receiver.
摘要:
Content information (CI) is recorded, and then control information including an encryption key is recorded. The area in which the content information (CI) is written is shifted with respect to the user area (UIA) in a playback-only disc. The control information (SI) is written with an identical shift. As a result of the shift, content information (CI) or dummy data (DD) is written in the area (SIA) in which control information is recorded in a playback-only disc. Information indicating the value of the shift is selected randomly and deleted when the disc is removed from the recording apparatus. When encrypted content is downloaded and recorded on a recordable optical disc, the complete content can be recorded on the disc correctly just once.
摘要:
Provided are a method and apparatus for effectively fixing scrambled content. The method includes checking fixing information for a program map table (PMT) packet of packets constituting the content, the fixing information being used to fix a transformed part of the content; extracting location information of a next PMT packet containing fixing data for fixing the transformed part of the content from the fixing information of the PMT packet; and fixing the transformed part of the content by using the fixing data in the next PMT packet indicated by the extracted location information. Accordingly, it is possible to easily detect a location of the content, which stores the fixing information, thereby expediting fixing of the transformed content.
摘要:
A new-type recordable DVD medium has medium characteristics not defined in the DVD-R standards and has compatibility with the DVD-ROM standards. Since information on the new-type recordable DVD medium can be played back by an existing player, even when content data protected by CSS (Content Scrambling System) is recorded on the new-type recordable DVD medium, the recordable DVD medium can be used for content distribution service using a kiosk terminal.
摘要:
An information recording medium and a recording and/or reproducing apparatus and method used to guarantee reproduction compatibility in consideration of the fact that content distribution may be performed according to various business models includes a management information zone in which management information is recorded, wherein the management information indicates an intended type of use of the information recording medium.
摘要:
An authentication method for use in sending/receiving data between a coded data output apparatus for outputting coded data having a water mark, and a recording apparatus for recording data onto a recording medium, the method including: deciding a type of the recording medium used by the recording apparatus; based on a result of the deciding, selecting, from a plurality of authentication methods, an authentication method corresponding to the type of the recording medium, and conducting authentication between the coded data output apparatus and the recording apparatus, using the authentication method; sending/receiving data between the coded data output apparatus and the recording apparatus after conducting the authentication; and in a case where the coded data has the water mark, detecting the water mark by the coded data output apparatus, wherein the data exchanged between the coded data output apparatus and the recording apparatus is scrambled by a scrambling method corresponding to the type the recording medium.
摘要:
Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies. If pirates compromise a player or title, future content can be mastered with security features that, for example, block the attack, revoke pirated media, or use native code to correct player vulnerabilities.
摘要:
Technologies to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disk (200) carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations (225), access secure non-volatile storage, submit data to CODECs for output (250), and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies. If pirates compromise a player or title, future content can be mastered with security features that, for example, block the attack, revoke pirated media, or use native code to correct player vulnerabilities.