INFORMATION RECORDING/PLAYBACK APPARATUS AND METHOD
    31.
    发明申请
    INFORMATION RECORDING/PLAYBACK APPARATUS AND METHOD 有权
    信息记录/播放装置和方法

    公开(公告)号:US20070116278A1

    公开(公告)日:2007-05-24

    申请号:US11626288

    申请日:2007-01-23

    IPC分类号: H04N7/167

    摘要: A block key to encrypt block data is generated using an ATS (arrival time stamp) appended to each of TS (transport stream) packets included in a transport stream correspondingly to the arrival time of the TS packet. The ATS is a random data depending upon an arrival time, and so a block-unique key can be generated, which enhances the protection against data cryptanalysis. A block key is generated from a combination of an ATS with a key unique to a device, recording medium or the like such as a master key, disc-unique key, title-unique key or the like. Since an ATS is used to generate a block key, any area for storage of an encryption key for each block may not be provided in a recording medium.

    摘要翻译: 使用与TS分组的到达时间相对应的附加到包括在传输流中的每个TS(传输流)分组的ATS(到达时间戳)来生成加密块数据的块密钥。 ATS是根据到达时间的随机数据,因此可以生成块唯一密钥,这增强了对数据密码分析的保护。 块密钥是从ATS与设备唯一的密钥,诸如主密钥,盘唯一密钥,标题 - 唯一密钥等的记录介质等的组合生成的。 由于使用ATS来生成块密钥,因此可能不会在记录介质中提供用于存储每个块的加密密钥的任何区域。

    Information processing system and method
    32.
    发明申请
    Information processing system and method 有权
    信息处理系统和方法

    公开(公告)号:US20060159272A1

    公开(公告)日:2006-07-20

    申请号:US11342162

    申请日:2006-01-27

    IPC分类号: H04L9/00

    摘要: An enabling key block (EKB) used in an encrypted key distributing tree structure is generated by forming a simplified 2-branch or multi-branch type tree with a terminal node or leaf which is capable of decrypting on the basis of a key corresponding to a node or a leaf of the simplified tree. Further, the EKB includes a tag for indicating a position of an encrypted key in the tree. The tag not only discriminates position but also stores data for judging the presence of encrypted key data within the EKB. As such, a considerable reduction in data quantity is realized, and the decrypting process in a device is also simplified.

    摘要翻译: 在加密的密钥分发树结构中使用的启用密钥块(EKB)通过形成具有终端节点或叶片的简化的2分支或多分支树型树生成,该终端节点或叶片能够基于对应于 节点或简化树的叶。 此外,EKB包括用于指示加密密钥在树中的位置的标签。 该标签不仅识别位置,还存储用于判断EKB内加密密钥数据的存在的数据。 因此,实现了数据量的显着减少,并且设备中的解密处理也被简化。

    Information recording device, information playback device, information recording method, information playback method, and information recording medium and program providing medium used therewith
    33.
    发明申请
    Information recording device, information playback device, information recording method, information playback method, and information recording medium and program providing medium used therewith 失效
    信息记录装置,信息重放装置,信息记录方法,信息重放方法以及与其一起使用的信息记录介质和程序提供介质

    公开(公告)号:US20060026444A1

    公开(公告)日:2006-02-02

    申请号:US11237220

    申请日:2005-09-28

    IPC分类号: G06F12/14

    摘要: An information recording/playback device stores beforehand, on a recording medium, secret information in which a writing/reading method thereof cannot be analyzed and which can be read only by a special reading method. The secret information is applied to a key for content encryption or decryption when performing recording or playback of contents on the recording medium, such as music data and image data. The secret information is, for example, a stamper ID. By using the stamper ID as secret information, and a master key and a media key which are distributed in a tree-structure key-distribution system, a content-cryptosystem key is generated. Accordingly, each content is allowed to be used in only an appropriate device in which the special reading method for the secret information can be executed and to which the key is distributed by the tree-structure key-distribution system.

    摘要翻译: 信息记录/重放装置预先在记录介质上存储其中不能分析其书写/读取方法的秘密信息,并且只能通过专门的读取方法来读取该秘密信息。 当在诸如音乐数据和图像数据的记录介质上执行内容的记录或回放时,秘密信息被应用于内容加密或解密的密钥。 秘密信息例如是压模ID。 通过使用压模ID作为秘密信息,以及分配在树结构密钥分发系统中的主密钥和媒体密钥,生成内容密码系统密钥。 因此,允许每个内容仅在可以执行用于秘密信息的特殊读取方法的适当的设备中使用,并且由树结构密钥分发系统将密钥分发给密钥。

    Information processing system and method
    34.
    发明申请
    Information processing system and method 失效
    信息处理系统和方法

    公开(公告)号:US20050228809A1

    公开(公告)日:2005-10-13

    申请号:US11132664

    申请日:2005-05-19

    摘要: An information processing system and method are disclosed in which information processing is performed in a highly efficient manner using an enabling key block (EKB) on the basis of a tree structure including category subtrees. A key tree is formed so as to include a plurality of subtrees serving as category trees categorized in accordance with categories and managed by category entities. An EKB includes data produced by selecting a path in a tree and encrypting a higher-level key in the selected path using a lower-level key in the selected path. The resultant EKB is provided to a device. Distribution of EKB's is managed on the basis of an EKB type definition list representing the correspondence between an EKB type identifier and one or more identification data identifying one or more category trees that can process an EKB of an EKB type specified by the EKB type identifier.

    摘要翻译: 公开了一种信息处理系统和方法,其中使用基于包括类别子树的树结构的启用密钥块(EKB)以高效的方式执行信息处理。 形成关键树,以便包括用作根据类别分类并由类别实体管理的类别树的多个子树。 EKB包括通过选择树中的路径并使用所选路径中的较低级别的密钥来加密所选路径中的较高级别的密钥而产生的数据。 所得到的EKB被提供给设备。 基于表示EKB类型标识符与识别可以处理由EKB类型标识符指定的EKB类型的EKB的一个或多个类别树的一个或多个标识数据之间的对应关系的EKB类型定义列表来管理EKB的分发。

    Contents processing system
    36.
    发明申请
    Contents processing system 有权
    内容处理系统

    公开(公告)号:US20050005148A1

    公开(公告)日:2005-01-06

    申请号:US10897684

    申请日:2004-07-23

    摘要: A first information processing unit 100 stores identification information into a storage module 152, stores an encrypted contents signal into a mass storage unit 180, and supplies the encrypted contents signal and identification information to a second information processing unit 200 through a communication section 110. In a receiving unit 170 of the first information processing unit 100, log information generated by a purchase processing module 153 is stored into the storage module 152 every time the contents key is decoded, and the log information is transmitted at predetermined timing to a key management center 30 through the transmission section 110. The second information processing unit 200 receives the encrypted contents signal and the identification information through a communication section 210, and causes a contents processing section 260 to decode the encrypted contents signal and to append the identification information thereto.

    摘要翻译: 第一信息处理单元100将识别信息存储到存储模块152中,将加密内容信号存储到大容量存储单元180中,并通过通信部110将加密的内容信号和识别信息提供给第二信息处理单元200.在 第一信息处理单元100的接收单元170,每当内容密钥被解码时,由购买处理模块153产生的日志信息被存储到存储模块152中,并且将日志信息以预定的定时发送到密钥管理中心 第二信息处理单元200通过通信部件210接收加密的内容信号和识别信息,并使内容处理部分260对加密的内容信号进行解码并附加识别信息。

    Information playing/reproducing apparatus and method
    40.
    发明授权
    Information playing/reproducing apparatus and method 有权
    信息播放/再现装置和方法

    公开(公告)号:US08112811B2

    公开(公告)日:2012-02-07

    申请号:US12613255

    申请日:2009-11-05

    IPC分类号: H04L9/00

    摘要: A block key to encrypt block data is generated using an ATS (arrival time stamp) appended to each of TS (transport stream) packets included in a transport stream correspondingly to the arrival time of the TS packet. The ATS is a random data depending upon an arrival time, and so a block-unique key can be generated, which enhances the protection against data cryptanalysis. A block key is generated from a combination of an ATS with a key unique to a device, recording medium or the like such as a master key, disc-unique key, title-unique key or the like. Since an ATS is used to generate a block key, any area for storage of an encryption key for each block may not be provided in a recording medium.

    摘要翻译: 使用与TS分组的到达时间相对应的附加到包括在传输流中的每个TS(传输流)分组的ATS(到达时间戳)来生成加密块数据的块密钥。 ATS是根据到达时间的随机数据,因此可以生成块唯一密钥,这增强了对数据密码分析的保护。 块密钥是从ATS与设备唯一的密钥,诸如主密钥,盘唯一密钥,标题 - 唯一密钥等的记录介质等的组合生成的。 由于使用ATS来生成块密钥,因此可能不会在记录介质中提供用于存储每个块的加密密钥的任何区域。