公开(公告)号：US07167564B2

公开(公告)日：2007-01-23

申请号：US10204775

申请日：2001-12-21

申请人： Tomoyuki Asano ,  Yoshitomo Osawa ,  Tateo Oishi ,  Ryuji Ishiguro ,  Ryuta Taki

发明人： Tomoyuki Asano ,  Yoshitomo Osawa ,  Tateo Oishi ,  Ryuji Ishiguro ,  Ryuta Taki

IPC分类号： H04L9/16

CPC分类号： H04L63/0428 ,  G06F21/10 ,  G06F2221/0753 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00855 ,  H04L9/0836 ,  H04L9/0891 ,  H04L63/062 ,  H04L63/0869 ,  H04L63/104 ,  H04L2209/60

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 produced so as to include a plurality of subtrees that are grouped in accordance with categories and managed by category entities. An EKB is produced so as to include data produced by selecting a path in the key tree and encrypting an upper-level key in the selected path using a lower-level key in the selected path. The resultant EKB is provided to a device. If a change occurs in state of a category tree capable of processing an EKB identified in the EKB type definition list, a notification of the change in state is sent to an entity that uses the EKB thereby making it possible for an EKB requester to perform processing in accordance with a newest EKB.

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。 生成密钥树，以便包括根据类别分组并由类别实体管理的多个子树。 产生EKB，以包括通过选择密钥树中的路径并使用所选路径中的下级密钥加密所选路径中的上级密钥而产生的数据。 所得到的EKB被提供给设备。 如果在能够处理在EKB类型定义列表中识别的EKB的类别树的状态发生变化，则向使用EKB的实体发送状态改变的通知，从而使得EKB请求者能够执行处理 按照最新的EKB。

公开(公告)号：US20060140402A1

公开(公告)日：2006-06-29

申请号：US11359928

申请日：2006-02-22

申请人： Ryuji Ishiguro ,  Yoshitomo Osawa ,  Yoshio Osakabe ,  Makoto Sato ,  Hisato Shima ,  Tomoyuki Asano

发明人： Ryuji Ishiguro ,  Yoshitomo Osawa ,  Yoshio Osakabe ,  Makoto Sato ,  Hisato Shima ,  Tomoyuki Asano

IPC分类号： H04L9/00

CPC分类号： H04L9/0891 ,  G06F21/10 ,  G06F21/445 ,  G06F21/6209 ,  G06F21/725 ,  G06F21/73 ,  G06F21/85 ,  G06F2211/007 ,  G06F2221/2107 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00492 ,  G11B20/00521 ,  G11B2220/2525 ,  G11B2220/2562 ,  H04L9/008 ,  H04L9/0861 ,  H04L9/0869 ,  H04L2209/603

摘要： The invention provides an enciphering apparatus and method, a deciphering apparatus and method and an information processing apparatus and method by which illegal copying can be prevented with certainty. Data enciphered by a 1394 interface of a DVD player is transmitted to a personal computer and a magneto-optical disk apparatus through a 1394 bus. In the magneto-optical disk apparatus with which a change to a function is open to a user, the received data is deciphered by a 1394 interface. In contrast, in the personal computer with which a change to a function is open to a user, the enciphered data is deciphered using a time variable key by a 1394 interface, and a result of the decipherment is further deciphered using a session key by an application section.

公开(公告)号：US06728379B1

公开(公告)日：2004-04-27

申请号：US09340900

申请日：1999-06-28

申请人： Yoshihito Ishibashi ,  Yoshitomo Osawa ,  Tateo Oishi ,  Tomoyuki Asano

发明人： Yoshihito Ishibashi ,  Yoshitomo Osawa ,  Tateo Oishi ,  Tomoyuki Asano

IPC分类号： H04N7167

CPC分类号： H04L63/0428 ,  H04L63/062 ,  H04L2463/101 ,  H04N7/1675 ,  H04N21/2347 ,  H04N21/26606 ,  H04N21/4405 ,  H04N21/4623 ,  H04N21/4627 ,  H04N21/63345 ,  H04N21/8355

摘要： An information processor receives at a communication section thereof an encrypted content decryption key generated by encrypting, by a distribution encryption key, a content decryption key for decryption of a content encrypted by a content encryption key. The received encrypted content decryption key is sent to a content key decryption section where it is decrypted. The decrypted content decryption key and copy control code are sent to a content key encryption section where they are encrypted by an encryption key which can be decrypted at an external information processor, namely, a session key, to send an encrypted content decryption key with a copy control code to the external information processor via a communication section.

摘要翻译： 信息处理器在其通信部分处接收通过分发加密密钥对由内容加密密钥加密的内容进行解密的内容解密密钥进行加密而生成的加密内容解密密钥。 接收到的加密内容解密密钥被发送到解密密钥的内容密​​钥解密部分。 解密的内容解密密钥和复制控制码被发送到内容密钥加密部分，在那里它们被加密密钥加密，该加密密钥可以在外部信息处理器（即会话密钥）处被解密，以发送加密的内容解密密钥 通过通信部将复制控制代码复制到外部信息处理器。

公开(公告)号：US06526146B1

公开(公告)日：2003-02-25

申请号：US09250983

申请日：1999-02-16

申请人： Megumu Hashimoto ,  Yoshitomo Osawa ,  Tomoyuki Asano

发明人： Megumu Hashimoto ,  Yoshitomo Osawa ,  Tomoyuki Asano

IPC分类号： G06F1214

CPC分类号： H04L12/40058 ,  G11B20/00086 ,  G11B20/00768 ,  G11B20/00775 ,  H04L12/40071 ,  H04L12/40117 ,  H04N5/765 ,  H04N5/775 ,  H04N5/85 ,  H04N5/913 ,  H04N21/4135 ,  H04N21/43632 ,  H04N21/8355 ,  H04N2005/91328 ,  H04N2005/91364

摘要： An optical disc recorder/reproducer, a personal computer, a television receiver, an IRD and so forth are connected mutually via a 1394 serial bus. When data transmitted from the personal computer to the optical disc recorder/reproducer via the 1394 serial bus are to be recorded, an isochronous packet is sent to the recorder/reproducer inclusive of the data to indicate whether the personal computer is a device capable of cognizing copy control information. And depending on whether the source of the transmitted data is a copy control information cognizant device or not, the optical disc recorder/reproducer updates the copy control information with reference to a selected table, and then the updated copy control information is recorded on the optical disc. This system can distinguish between a prerecorded disc and a user-recorded disc, hence achieving exact management of copy control information.

摘要翻译： 光盘记录器/再现器，个人计算机，电视接收机，IRD等通过1394串行总线相互连接。 当从个人计算机经由1394串行总线传送到光盘记录器/再现器的数据将被记录时，同步数据包被发送到包括数据的记录器/再现器，以指示个人计算机是否能够识别 复制控制信息。 并且，根据所发送的数据的来源是否是复制控制信息识别装置，光盘记录器/再现器参考所选择的表更新复制控制信息，然后更新的复制控制信息被记录在光学 光盘。 该系统可以区分预先记录的光盘和用户记录的光盘，从而实现复制控制信息的精确管理。

公开(公告)号：US06256391B1

公开(公告)日：2001-07-03

申请号：US09059776

申请日：1998-04-14

申请人： Ryuji Ishiguro ,  Yoshitomo Osawa ,  Yoshio Osakabe ,  Makoto Sato ,  Hisato Shima ,  Tomoyuki Asano

发明人： Ryuji Ishiguro ,  Yoshitomo Osawa ,  Yoshio Osakabe ,  Makoto Sato ,  Hisato Shima ,  Tomoyuki Asano

IPC分类号： H04N7167

CPC分类号： H04L9/0891 ,  G06F21/10 ,  G06F21/445 ,  G06F21/6209 ,  G06F21/725 ,  G06F21/73 ,  G06F21/85 ,  G06F2211/007 ,  G06F2221/2107 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00492 ,  G11B20/00521 ,  G11B2220/2525 ,  G11B2220/2562 ,  H04L9/008 ,  H04L9/0861 ,  H04L9/0869 ,  H04L2209/603

摘要： The invention provides an enciphering apparatus and method, a deciphering apparatus and method and an information processing apparatus and method by which illegal copying can be prevented with certainty. Data enciphered by a 1394 interface of a DVD player is transmitted to a personal computer and a magneto-optical disk apparatus through a 1394 bus. In the magneto-optical disk apparatus with which a change to a function is not open to a user, the received data is deciphered by a 1394 interface. In contrast, in the personal computer with which a change to a function is open to a user, the enciphered data is deciphered using a time variable key by a 1394 interface, and a result of the decipherment is further deciphered using a session key by an application section.

摘要翻译： 本发明提供了可以确定地防止非法复制的加密装置和方法，解密装置和方法以及信息处理装置和方法。 通过DVD播放器的1394接口加密的数据通过1394总线传送到个人计算机和磁光盘装置。 在功能变化对用户不开放的磁光盘装置中，接收到的数据被1394接口解密。 相反，在对用户进行功能改变的个人计算机中，使用1394接口的时间变量键解密加密数据，并且使用会话密钥进一步解密解密结果 申请部分。

公开(公告)号：US08458458B2

公开(公告)日：2013-06-04

申请号：US12794568

申请日：2010-06-04

申请人： Tomoyuki Asano ,  Yoshitomo Osawa

发明人： Tomoyuki Asano ,  Yoshitomo Osawa

IPC分类号： H04L29/06 ,  H04L9/32 ,  G06F7/04 ,  G06F17/30 ,  G06F15/16 ,  G06F15/173

CPC分类号： G06F21/445 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00876

摘要： A security module is provided in a data recording medium, data to be written to the data recording medium is encrypted with an content key different from one data to another, and the content key is safely stored in the security module. Also, the security module makes a mutual authentication using the public-key encryption technology with a drive unit to check that the counterpart is an authorized (licensed) unit, and then gives the content key to the counterpart, thereby preventing data from being leaked to any illegal (unlicensed) unit. Thus, it is possible to prevent copyrighted data such as movie, music, etc. from being copied illegally (against the wish of the copyrighter of the data).

摘要翻译： 在数据记录介质中提供安全模块，用不同于一个数据的内容密钥对要写入数据记录介质的数据进行加密，并将内容密钥安全地存储在安全模块中。 此外，安全模块使用具有驱动单元的公共密钥加密技术进行相互认证，以检查对方是授权（许可）单元，然后向对方发送内容密钥，从而防止数据泄漏到 任何非法（无牌）单位。 因此，可以防止诸如电影，音乐等的受版权保护的数据被非法复制（相对于数据的复制者的愿望）。

公开(公告)号：US08127148B2

公开(公告)日：2012-02-28

申请号：US11237220

申请日：2005-09-28

申请人： Tomoyuki Asano ,  Yoshitomo Osawa

发明人： Tomoyuki Asano ,  Yoshitomo Osawa

IPC分类号： H04L9/14 ,  G06F12/14

CPC分类号： G11B20/0021 ,  G11B20/00086 ,  G11B20/00876 ,  G11B20/1217 ,  H04N5/781 ,  H04N5/85 ,  H04N5/907 ,  H04N5/913 ,  H04N9/7921 ,  H04N9/8042 ,  H04N2005/91364

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。

公开(公告)号：US07739495B2

公开(公告)日：2010-06-15

申请号：US11797600

申请日：2007-05-04

申请人： Tomoyuki Asano ,  Yoshitomo Osawa

发明人： Tomoyuki Asano ,  Yoshitomo Osawa

IPC分类号： H04L29/06 ,  H04L9/32 ,  G06F7/04 ,  G06F17/30 ,  G06F15/16 ,  G06F15/173

CPC分类号： G06F21/445 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00876

摘要： A security module is provided in a data recording medium, data to be written to the data recording medium is encrypted with an content key different from one data to another, and the content key is safely stored in the security module. Also, the security module makes a mutual authentication using the public-key encryption technology with a drive unit to check that the counterpart is an authorized (licensed) unit, and then gives the content key to the counterpart, thereby preventing data from being leaked to any illegal (unlicensed) unit. Thus, it is possible to prevent copyrighted data such as movie, music, etc. from being copied illegally (against the wish of the copyrighter of the data).

摘要翻译： 在数据记录介质中提供安全模块，用不同于一个数据的内容密钥对要写入数据记录介质的数据进行加密，并将内容密钥安全地存储在安全模块中。 此外，安全模块使用具有驱动单元的公共密钥加密技术进行相互认证，以检查对方是授权（许可）单元，然后向对方发送内容密钥，从而防止数据泄漏到 任何非法（无牌）单位。 因此，可以防止诸如电影，音乐等的受版权保护的数据被非法复制（相对于数据的复制者的愿望）。

公开(公告)号：US07505599B2

公开(公告)日：2009-03-17

申请号：US09980952

申请日：2001-04-04

申请人： Ryuji Ishiguro ,  Yoshitomo Osawa ,  Tateo Oishi ,  Tomoyuki Asano ,  Atsushi Mitsuzawa

发明人： Ryuji Ishiguro ,  Yoshitomo Osawa ,  Tateo Oishi ,  Tomoyuki Asano ,  Atsushi Mitsuzawa

IPC分类号： H04L9/00

CPC分类号： H04L9/0836 ,  G06F21/10 ,  G06F2221/0797 ,  G06F2221/2107 ,  G06F2221/2109 ,  G11B20/00086 ,  G11B20/0021 ,  H04L9/0822 ,  H04L2209/60

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。

公开(公告)号：US07401231B2

公开(公告)日：2008-07-15

申请号：US10221302

申请日：2002-01-11

申请人： Ryuta Taki ,  Tomoyuki Asano ,  Tateo Oishi ,  Yoshitomo Osawa

发明人： Ryuta Taki ,  Tomoyuki Asano ,  Tateo Oishi ,  Yoshitomo Osawa

IPC分类号： G06F11/30 ,  G06F12/14 ,  H04L9/32

CPC分类号： G11B20/00086 ,  G06F21/10 ,  G06F21/78 ,  G11B20/00166 ,  G11B20/0021 ,  G11B20/00253 ,  G11B20/00731 ,  H04L9/0822 ,  H04L9/0836 ,  H04L9/0891 ,  H04L2209/603

摘要： A system and method are realized which enables valid use of content by preventing unauthorized use of content which is caused by rewriting rights data. A structure is employed in which rights data including use-restriction information on content and DRM data including an encrypted content key are recorded in a digital data recording medium (media), and in which an integrity check value (ICV) for the DRM data can be stored in a recordable/playable area (protected area) by using only a dedicated IC. EKB distribution is used to execute the tree-structure key distribution to distribute keys for generating ICV-generation verifying keys. In this structure, unauthorized use of content by rewriting of the rights data is prevented.

摘要翻译： 实现了通过防止由重写权限数据引起的内容的未经授权的使用来有效地使用内容的系统和方法。 使用包括关于内容的使用限制信息和包括加密的内容密钥的DRM数据的权利数据记录在数字数据记录介质（媒体）中的结构，并且其中DRM数据的完整性检查值（ICV）可以 通过仅使用专用IC存储在可记录/可播放区域（保护区域）中。 EKB分配用于执行树结构密钥分发，以分发用于生成ICV生成验证密钥的密钥。 在这种结构中，防止通过重写权利数据来未经授权地使用内容。