公开(公告)号：EP1538529A4

公开(公告)日：2009-05-20

申请号：EP03795392

申请日：2003-09-11

申请人： SONY CORP

发明人： NAGAI NORIHIRO ,  KURIHARA AKIRA ,  KITAYA YOSHIMICHI ,  OSAWA YOSHITOMO ,  URANO NAOMI ,  MORITA MASAO ,  FUKUI TOSHIHARU

IPC分类号： G06F12/14 ,  G11B20/00 ,  G06F21/24 ,  H04L9/08 ,  H04N5/85

CPC分类号： G11B20/1262 ,  G11B20/00086 ,  G11B20/00094 ,  G11B20/00202 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00253 ,  G11B20/00492 ,  G11B20/00659 ,  G11B20/00847

摘要： There are provided an information recording medium, an information processing device, and an information processing method capable of using a content while protecting the copyright in both of a CD player and an information processing device such as a PC. The information recording medium has a first data storage region which has been subjected to the copy prevention processing and a second data storage region containing an encrypted content file including an encrypted content and encrypted key data which has been obtained by encrypting key data applied for decoding and can be decrypted only by a device having a license. Reproduction of the content recorded in the first data recording field can be performed in a reproduction device such as a CD player and decryption/reproduction of the encrypted content in the second data recording field can be performed in an information processing device such as a PC if a license can be acquired.

公开(公告)号：EP1221782A4

公开(公告)日：2003-06-04

申请号：EP01941164

申请日：2001-06-21

申请人： SONY CORP

发明人： ASANO TOMOYUKI ,  OSAWA YOSHITOMO ,  ISHIGURO RYUJI ,  MITSUZAWA ATSUSHI ,  OISHI TATEO

IPC分类号： G06F21/10 ,  G11B20/00 ,  H04L9/08 ,  H04L29/06 ,  H04L9/00 ,  G06F12/14 ,  G10K15/02 ,  G11B20/10 ,  H04N7/167

CPC分类号： H04L9/0836 ,  G06F21/10 ,  G06F2221/2107 ,  G11B20/00086 ,  G11B20/00115 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00253 ,  G11B20/00507 ,  G11B20/00528 ,  G11B20/00855 ,  H04L9/0822 ,  H04L9/0891 ,  H04L63/0428 ,  H04L63/064 ,  H04L63/12 ,  H04L2209/60

摘要： An information recording/reproducing device for executing a key distribution by a KRB distribution involving a tree-structure key distribution configuration. The device transmits, by using a key-structure key distribution configuration, a key such as a master key, a media key or a content key along with a key update block (KRB). The recording/reproducing device, after calculating and acquiring the key of a certain recording medium based on a reception KRB, encrypts the acquired key using an encryption key specific to the device, for example, a leaf key, and stores it in a recording medium or memory of the device. Therefore, the recording/reproducing device can calculate a key by merely decoding the encrypting key one time when next using the recording medium or contents, and can reduce computational complexity such as KRB decoding required when the device accesses a recording medium or uses contents, thereby making efficient processing on the KRB receiving side.

公开(公告)号：EP0794496A4

公开(公告)日：1999-05-12

申请号：EP96917719

申请日：1996-06-18

申请人： SONY CORP

发明人： SAKO YOICHIRO ,  KAWASHIMA ISAO ,  KURIHARA AKIRA ,  OSAWA YOSHITOMO ,  OWA HIDEO

IPC分类号： G06F12/00 ,  G06F1/00 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B27/10 ,  G11B27/30 ,  G11B27/32 ,  H04N5/85 ,  H04N5/913 ,  G06F12/14 ,  G06F3/06

CPC分类号： G11B20/0021 ,  G06F2211/007 ,  G11B20/00086 ,  G11B20/00115 ,  G11B20/00195 ,  G11B20/00253 ,  G11B20/00318 ,  G11B20/00333 ,  G11B20/00347 ,  G11B20/00507 ,  G11B20/00557 ,  G11B20/00637 ,  G11B20/0071 ,  G11B20/00768 ,  G11B20/1217 ,  G11B20/1833 ,  G11B20/1866 ,  G11B27/105 ,  G11B27/3027 ,  G11B27/329 ,  G11B2220/20 ,  G11B2220/235 ,  H04N5/85 ,  H04N5/913 ,  H04N2005/91364

摘要： The input is enciphered by means of at least one of a sectoring circuit (13) used for processing the input data to generate recording signals, a scramble processing circuit (14), a header adding circuit (15), an error correcting/encoding circuit (16), a modulation circuit (17), and a synchronism adding circuit (18), and the enciphered signal is outputted. In addition to the key of the enciphering itself in the circuit, which circuit performs the processing, is also an enciphering key. Therefore, data are enciphered with a simple circuit structure and ciphered data are hardly deciphered.

摘要翻译： 输入在形成电路13，加扰电路14，首标附加电路15，纠错编码电路16，调制电路18和同步附加电路18的扇区中的至少一个被加密，用于处理输入数据。 形成记录信号。 不仅键在电路加密本身，而是这样的电路已经被用于加密的信息，以成为用于加密的密钥。 这实现了加密难以通过简单的结构进行解码。

公开(公告)号：EP1185020A4

公开(公告)日：2008-09-03

申请号：EP01919776

申请日：2001-04-04

申请人： SONY CORP

发明人： ASANO TOMOYUKI ,  OSAWA YOSHITOMO ,  KATO MOTOKI

IPC分类号： H04N5/91 ,  G06F12/14 ,  G06F21/10 ,  G06F21/62 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  H04L9/16 ,  H04N5/92 ,  H04L9/00

CPC分类号： G11B20/00086 ,  G11B20/00094 ,  G11B20/00115 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00253 ,  G11B20/00507 ,  G11B20/00528 ,  G11B20/00536 ,  G11B20/00775

摘要： A block key for ciphering block data by using ATS added depending on the arrival time of a transport packet constituting a transport stream is created. Since the ATS is random data depending on the time, a unique key different with block can be created, thereby enhancing the strength against cipher analysis. The block key is created by combining the ATS and keys unique to the device and the recording medium such as the master key, disk unique key, and title unique key. Since the block key is created using the ATS, no areas on the recording medium for storage of a ciphering key for each block is required.

公开(公告)号：EP1143655A4

公开(公告)日：2006-08-30

申请号：EP00969864

申请日：2000-10-18

申请人： SONY CORP

发明人： OSAWA YOSHITOMO ,  ASANO TOMOYUKI

IPC分类号： G06F1/00 ,  G06F21/72 ,  G11B20/00 ,  H04L9/08 ,  G06F12/14 ,  G11B20/10

CPC分类号： G06F21/72 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00253 ,  G11B20/00543

摘要： An encrypting/decrypting LSI incorporates an LSI key common to other devices, and a ROM holds a device key unique to the device. The encrypting/decrypting LSI reads out the device key stored in the ROM, generates a data key unique to the device from the device key and the incorporated LSI key, and encrypts/decrypts data utilizing that data key. Unauthorized copy of data can be prevented while avoiding a cost increase of an information processor if possible.

公开(公告)号：EP1185021A4

公开(公告)日：2003-05-07

申请号：EP01919777

申请日：2001-04-04

申请人： SONY CORP

发明人： ISHIGURO RYUJI ,  OSAWA YOSHITOMO ,  OISHI TATEO ,  ASANO TOMOYUKI ,  MITSUZAWA ATSUSHI

IPC分类号： H04L9/08 ,  G06F1/00 ,  G06F21/00 ,  G11B20/00 ,  H04L9/32 ,  H04N7/16

CPC分类号： G11B20/00086 ,  G06F21/10 ,  G06F2221/0797 ,  G06F2221/2109 ,  G11B20/0021 ,  H04L9/0836 ,  H04L9/0891

摘要： An effective key block (EKB) used for key distribution structure of tree structure is re-structured to a simplified two-branch or multi-branch tree in which a decodable end node or leaf is at the lowest layer so as to create a re-structured layered tree according to only a key corresponding to the node or leaf of the re-structured layered tree. A tag as identification data about the tree position of an encryption key stored in the EKB is stored. In the tag, not only the position identification but data for judging if encryption key data is present in the EKB is stored. The amount of data in the EKB is greatly reduced and the decoding by a device is simplified. Thus, providing an information processing system and method enabling reduction of the amount of data in an Effective key block (EKB) used for an encryption key structure of tree structure.

公开(公告)号：EP1204236A4

公开(公告)日：2008-03-05

申请号：EP01938704

申请日：2001-06-15

申请人： SONY CORP

发明人： KITAYA YOSHIMICHI ,  ISHIGURO RYUJI ,  OSAWA YOSHITOMO ,  ASANO TOMOYUKI

IPC分类号： G11B20/00 ,  H04L9/08 ,  H04L9/00

CPC分类号： H04L9/0836 ,  G11B20/00086 ,  G11B20/0021 ,  H04L9/0891 ,  H04L2209/60

摘要： Sub-trees separated according to the data processing capability of a device are defined in a key tree in which keys are assigned to the roots, nodes, and leaves which are devices of a tree. A management entity of each sub-tree creates a sub make-effective key block effective in the entity. A key issuing center creates a make-effective key block decodable only by an entity having common capability according to the capability information on the entity. Each entity manages the partia trees (sub-trees) of the key tree, creates a sub make-effective key block according to only the nodes of the sub-trees or the keys corresponding to the leaves, and creates a make-effective key block decodable only by the selected entity by using the sub make-effective key block. Thus, a make-effective key block can be created in accordance with the data processing capability of a device and distributed, and the key tree hierarchical structure can be dividedly managed.

公开(公告)号：EP1265396A4

公开(公告)日：2006-08-16

申请号：EP02729546

申请日：2002-01-11

申请人： SONY CORP

发明人： TAKI RYUTA ,  ASANO TOMOYUKI ,  OISHI TATEO ,  OSAWA YOSHITOMO

IPC分类号： G06F12/14 ,  G11B20/00 ,  G06F1/00 ,  G06F21/00 ,  G06F21/24 ,  G09C1/00 ,  G11B20/10 ,  G11B20/12 ,  H04L9/08 ,  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 a method for realizing authorized use of a content while preventing false use of a content by rewriting right data. Right data including information on the content use limitation and DRM data including data on an encryption content key are recorded on a digital data recording medium. An integrity check value (ICV) for the DRM data is stored in a recordable / reproducible area (protected area) through a dedicated IC of a data recording/reproducing method different for an ordinary data recording/reproducing method. A key used for creating a key for ICV creation verification is created by EKB distribution by key distribution configuration of tree structure. Consequently, false use of a content by alteration of right data is prevented.

公开(公告)号：EP1253739A4

公开(公告)日：2005-02-02

申请号：EP01272281

申请日：2001-12-21

申请人： SONY CORP

发明人： ASANO TOMOYUKI ,  OSAWA YOSHITOMO ,  OISHI TATEO ,  ISHIGURO RYUJI ,  TAKI RYUTA

IPC分类号： G06F12/14 ,  G06F21/00 ,  G06F21/10 ,  G06F21/62 ,  G06Q30/06 ,  G06Q50/00 ,  G06Q50/10 ,  G11B20/00 ,  H04L9/08 ,  H04L29/06 ,  H04N7/167 ,  H04L9/00 ,  G10K15/02 ,  G11B20/10

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 for realizing an efficient processing by using an enabling key block (EKB) of a categorized tree structure. A path constituting a key tree having sub-trees sorted by category and managed by a category entity is selected, and an EKB composed of encrypted data on an upper-level key encrypted by a lower-level key on the selected path is created and provided to a device. A state change due to, e.g., a revocation in a category tree where an EKB defined in an EKB type definition list is processable is reported to an EKB use entity. An EKB requester can always carry out a processing on the basis of the latest EKB.

公开(公告)号：EP1089488A4

公开(公告)日：2002-07-10

申请号：EP00915488

申请日：2000-04-11

申请人： SONY CORP

发明人： ASANO TOMOYUKI ,  OSAWA YOSHITOMO

IPC分类号： G06F21/44 ,  G06F21/60 ,  H04H20/00 ,  H04L12/40 ,  H04L12/64 ,  H04N7/167 ,  H04N7/173 ,  H04L9/08 ,  H04H1/00 ,  H04L9/14 ,  H04L9/32 ,  H04L12/28 ,  H04L29/06

CPC分类号： G06F21/445 ,  G06F21/606 ,  H04L12/40104 ,  H04N7/1675 ,  H04N7/173 ,  H04N21/25816 ,  H04N21/43632 ,  H04N21/84

摘要： Protocol for mutual authentication and for sharing a plurality of encryption keys is practiced between a CPU (12) on a data transmitter (10) side and a CPU (22) on a data receiver (20) side prior to data transmission. The data transmitter (10) encrypts data which requires assurance of a transmission band with a first encryption key by the CPU (12) and transmits it through an input/output interface (16) in a first transmission mode. The data transmitter (10) further encrypts related data concerning the above mentioned data with a second encryption key through the input/output interface (16) in a second transmission mode. The data receiver (20) decrypts the data which requires the assurance of the transmission band and is received through an input/output interface (24) in the first transmission mode with the first code key and decrypts the related data which are received through the input/output interface (24) in the second transmission mode with the second code key.