公开(公告)号：JPH0997216A

公开(公告)日：1997-04-08

申请号：JP9895096

申请日：1996-04-19

Applicant: SONY CORP

Inventor： OSAWA YOSHITOMO ,  SAKO YOICHIRO ,  KURIHARA AKIRA ,  KAWASHIMA ISAO

IPC: G06F12/14 ,  G06F21/24 ,  G09C1/00 ,  G10K15/02 ,  G11B20/10 ,  G11B20/12 ,  H04L9/08

Abstract: PROBLEM TO BE SOLVED: To make it difficult to perform illegal decode or illegal copy. SOLUTION: This signal reproducing device reproduces enciphered data from a digital recording medium 101 recording the enciphered data, to which one enciphering processing has been performed at least, and key storage place information instructing for the place to arrange one piece of key information for deciphering at least, and this device is provided with a reproducing head device 212 for reading the enciphered data and key storage place information from the recording medium 101, TOC decoder 219, CPU 224 or the like and a digital signal processing circuit 220 for deciphering the enciphered data by using the key information of the place designated based on the key storage place information.

公开(公告)号：JPH0993226A

公开(公告)日：1997-04-04

申请号：JP10557096

申请日：1996-04-25

Applicant: SONY CORP

Inventor： SAKO YOICHIRO ,  OSAWA YOSHITOMO ,  KURIHARA AKIRA ,  KAWASHIMA ISAO

IPC: G06F12/14 ,  G06F21/24 ,  G09C1/00 ,  G11B20/10 ,  H03M13/00 ,  H04L1/00 ,  H04L9/18

Abstract: PROBLEM TO BE SOLVED: To conduct ciphering whose decoding is difficult and to enhance security of key information with a simple configuration. SOLUTION: An input conversion circuit 14 in an error correction coding processing section 13 converts data by applying logic arithmetic operation to information data from an interface circuit 12 in response to key data, converted information data are fed to an encoder 15, in which parity data are generated. The parity data and the information data before data conversion are mixed by a mixer circuit 16 and the result is outputted. Data from the error correction coding processing section 13 are modulated by a modulation circuit 17 and the modulated data are recorded on a recording disk medium 20.

公开(公告)号：JPH0955731A

公开(公告)日：1997-02-25

申请号：JP20635195

申请日：1995-08-11

Applicant: SONY CORP

Inventor： SAKO YOICHIRO ,  OSAWA YOSHITOMO ,  KURIHARA AKIRA ,  KAWASHIMA ISAO ,  YONEYAMA SHIGEYUKI

IPC: G06F12/14 ,  G06F21/24 ,  G09C1/00 ,  G11B19/12 ,  G11B20/00 ,  G11B20/10 ,  H04L9/18

Abstract: PROBLEM TO BE SOLVED: To prevent illegal use and illegal copying by preventing reproduction form information such as copy administration information and charging information to be altered or modified. SOLUTION: A reproduction form information adding circuit 14 in a header adding circuit 13 performs data conversion for ciphering for the reproduction form information such as copy administration information and charging information from a terminal 15 according to key information from a terminal 15K, and adds the converted information to data and transmits them. On a reproduction side, a reproduction form information detecting circuit 25 in a header separating circuit 25 performs data conversion deciphering for the ciphered reproduction format information by using key information from a terminal 27K and the original reproduction format information is taken out of a terminal 27P.

公开(公告)号：JPH0955730A

公开(公告)日：1997-02-25

申请号：JP20608495

申请日：1995-08-11

Applicant: SONY CORP

Inventor： SAKO YOICHIRO ,  OSAWA YOSHITOMO ,  KURIHARA AKIRA ,  KAWASHIMA ISAO

IPC: G06F12/14 ,  G06F21/24 ,  G09C1/00 ,  G11B20/10 ,  H04L9/18

Abstract: PROBLEM TO BE SOLVED: To make it difficult to decipher a code making it easy to handle key information by performing a ciphering processing by using 1st key information and performing a ciphering processing by using 2nd key information obtained from the information through data conversion. SOLUTION: Input digital data supplied to an input terminal 1 is sent to an output terminal 4 through signal processing circuits 2 and 3. The 1st key information KE1 from a key information supply part 5 is sent to a data converting circuit 6 and converted into the 2nd key information KE2 . Further, one of the 1st and 2nd pieces KE1 and KE2 of key information are sent to a 1st signal processing circuit 2 and the other is sent to a 2nd signal processing circuit 3. Then the respective signal processing circuits 2 and 3 performs data conversion corresponding to the pieces KE1 and KE2 of key information for ciphering what are supplied for input and other signal processings are performed when necessary before output. Further, a signal led out of an output terminal 4 is recorded on and reproduced from a recording medium and sent and received through a communication medium.

公开(公告)号：JP2013017225A

公开(公告)日：2013-01-24

申请号：JP2012204833

申请日：2012-09-18

Applicant: Sony Corp ,  ソニー株式会社

Inventor： ISHIGURO RYUJI ,  OSAWA YOSHITOMO ,  OSAKABE YOSHIO ,  SATO MAKOTO ,  SHIMA HISATO ,  ASANO TOMOYUKI

IPC: H04L9/08 ,  H04L9/32

Abstract: PROBLEM TO BE SOLVED: To surely prevent unauthorized copying.SOLUTION: Data encrypted by a 1394 interface 26 of a DVD player 1 is transmitted to a personal computer 2 and a magneto-optical disk device 3 via a 1394 bus 11. In the magneto-optical disk device 3 in which function modification is not released to users, a 1394 interface 36 decrypts the received data. On the other hand, in the personal computer 2 in which function modification is released to users, a 1394 interface 49 decrypts the encrypted data by using time-varying key i, and an application unit 61 decrypts again the decrypted result by using a session key S.

Abstract translation: 要解决的问题：确保防止未经授权的复制。 解决方案：通过1394总线11将由DVD播放器1的1394接口26加密的数据发送到个人计算机2和磁光盘装置3.在其中功能修改的磁光盘装置3中， 1394接口36不被释放给用户，对接收到的数据进行解密。 另一方面，在向用户释放功能修改的个人计算机2中，1394接口49通过使用时变密钥i解密加密数据，并且应用单元61通过使用会话密钥再次解密解密结果 （C）2013，JPO＆INPIT

公开(公告)号：JP2012070430A

公开(公告)日：2012-04-05

申请号：JP2011267555

申请日：2011-12-07

Applicant: Sony Corp ,  ソニー株式会社

Inventor： ISHIGURO RYUJI ,  OSAWA YOSHITOMO ,  OSAKABE YOSHIO ,  SATO MAKOTO ,  SHIMA HISATO ,  ASANO TOMOYUKI

IPC: H04L9/16 ,  H04L9/08

Abstract: PROBLEM TO BE SOLVED: To securely prevent illegal copying.SOLUTION: The decoder transmits data encoded on a 1394 interface 26 of a DVD player 1 to a personal computer 2 and an optical magnetic disk device 3 via a 1394 bus 11. In the optical magnetic disk device 3 for which users are not allowed to modify its functions, the received data is decoded on a 1394 interface 36. On the other hand, in the personal computer 2 for which user are allowed to modify its functions, encoded data is decoded on a 1394 interface 49 by using a time-variant key i and the decoded output is further decoded on an application unit 61 by using a session key S.

Abstract translation: 要解决的问题：安全防止非法复制。 解码器：解码器通过1394总线11将在DVD播放器1的1394接口26上编码的数据发送到个人计算机2和光盘装置3.在用户不是的光盘装置3中 允许修改其功能，接收的数据在1394接口36上解码。另一方面，在允许用户修改其功能的个人计算机2中，编码数据在1394接口49上通过使用时间 变形键i和解码输出通过使用会话密钥S在应用单元61上进一步解码。版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2007025913A

公开(公告)日：2007-02-01

申请号：JP2005204946

申请日：2005-07-13

Applicant: Sony Corp ,  ソニー株式会社

Inventor： UEDA KENJIRO ,  OISHI TAKEO ,  OSAWA YOSHITOMO ,  MURAMATSU KATSUMI ,  TAKASHIMA YOSHIKAZU

IPC: G06F21/24 ,  G11B20/10

CPC classification number: G11B20/00086 ,  G11B20/0021

Abstract: PROBLEM TO BE SOLVED: To attain strict use control in content use which involves data transfer between a drive and a host. SOLUTION: When the reproduction of an information storage medium-stored content is executed through the drive, the host applies a drive revocation list in mutual authentication between the host and the driver to confirm the revoke state of the drive, and executes data verification based on alteration verification data generated based on data containing the drive revocation list and control information related to the reproduction object content stored in the information storage medium, for example, data based on an MAC value. By this structure, an illicit content use such as the illicit establishment of authentication by applying a revocation list of an old version can be prevented, and the strict use control of contents can be performed. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了在内容使用中实现严格的使用控制，涉及驱动器和主机之间的数据传输。 解决方案：当通过驱动器执行信息存储介质存储内容的再现时，主机在主机和驱动器之间的相互认证中应用驱动器撤销列表以确认驱动器的撤销状态，并且执行数据 基于基于包含驱动器撤销列表的数据生成的改变验证数据和与存储在信息存储介质中的再现对象内容有关的控制信息的验证，例如基于MAC值的数据。 通过这种结构，可以防止诸如通过应用旧版本的撤销列表来非法建立认证的非法内容使用，并且可以执行内容的严格使用控制。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2004102789A

公开(公告)日：2004-04-02

申请号：JP2002265418

申请日：2002-09-11

Applicant: Sony Corp ,  Sony Miyuujitsuku Entertainment:Kk ,  ソニー株式会社 ,  株式会社ソニー・ミュージックエンタテインメント

Inventor： NAGAI KIKO ,  KURIHARA AKIRA ,  KITATANI YOSHIMICHI ,  OSAWA YOSHITOMO ,  GO NAOMI ,  MORITA MASAO ,  FUKUI TOSHIHARU

IPC: G06F21/00 ,  G06F15/00 ,  G06F21/10 ,  G06F21/33 ,  G06F21/62 ,  G06Q30/06 ,  G06Q50/00 ,  G06Q50/10 ,  G11B20/00 ,  G11B20/10 ,  H04K1/00 ,  H04L9/00 ,  H04N7/167 ,  H04N21/21 ,  H04N21/2543 ,  H04N21/258 ,  H04N21/462 ,  G06F17/60

CPC classification number: G06F21/10 ,  G06F2221/2135 ,  G11B20/00086 ,  G11B20/00253 ,  G11B20/00847

Abstract: PROBLEM TO BE SOLVED: To provide an information recording medium, an information processor and a method which permit content use, complying with copyright protection in both of a CD player and an information processor of PC or the like. SOLUTION: A licensing condition for a client is set dynamically, based on the content use status of the client. For instance, the license price is reduced or free for a client who uses the content many times. This device is constituted such that after receiving a medium ID stored in a CD or the like and product IDs as identifiers for titles, album units or the like from the client, on the basis of these pieces of identification data, content use status data are confirmed, thus furnishing license to the client under assured content use management. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2002215465A

公开(公告)日：2002-08-02

申请号：JP2001007238

申请日：2001-01-16

Applicant: SONY CORP

Inventor： TAKI RYUTA ,  ASANO TOMOYUKI ,  OISHI TAKEO ,  OSAWA YOSHITOMO

IPC: G06F12/14 ,  G06F21/00 ,  G06F21/24 ,  G09C1/00 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  H04L9/08 ,  H04L9/32

Abstract: PROBLEM TO BE SOLVED: To realize a system and a method for realizing legal contents utilization by preventing an illegal utilization of contents by right data rewriting. SOLUTION: The right data composed of contents utilization limitation information and DRM(digital rights management) data composed of a right data and an encipherment contents key, etc., are recorded on a digital data recording medium (media), and an interpolation check value(ICV) for the DRM data is stored in an area (protected area) where the interpolation check value(ICV) can be recorded/reproduced only through a dedicated IC different from a normal data recording and reproduction system. A key for generating a key for ICV generation verification is performed by an EKB distribution that distributes the key by a key distribution configuration of a tree (tree) structure. By this configuration, it is possible to prevent the contents from being illegally utilized due to right data rewriting.

公开(公告)号：JP2002198953A

公开(公告)日：2002-07-12

申请号：JP2000396099

申请日：2000-12-26

Applicant: SONY CORP

Inventor： ASANO TOMOYUKI ,  OSAWA YOSHITOMO ,  OISHI TAKEO ,  ISHIGURO RYUJI ,  TAKI RYUTA

IPC: G06F12/00 ,  H04L9/08

Abstract: PROBLEM TO BE SOLVED: To realize a system and a method for processing information, which can execute an effective processing using an effective key block(EKB) using a categorized key structure. SOLUTION: This system comprises a configuration, which provides a device with an EKB that is generated from encrypted data of an upper key by a lower key of a key tree which has a plurality of sub trees categorized and managed by category entity, where a synthesized EKB of sub EKBs capable of decryption is configured at each sub tree set as a part tree of the key tree, so as to hold a key array in each of sub effective key blocks(sub EKBs) stored in the synthesized EKB and to add a data length of a sub EKB storage area and a sub EKB identifying data to each of the sub EKBs. Thus decryption can be executed at each device even if the sub EKBs are synthesized by any of various algorithms.