公开(公告)号：DE69618101D1

公开(公告)日：2002-01-31

申请号：DE69618101

申请日：1996-07-17

Applicant: SONY CORP

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

IPC: G06F1/00 ,  G11B20/00 ,  G11B27/10 ,  G11B27/32

Abstract: A signal reproducing apparatus, in which unauthorized decoding or copying is rendered difficult, reproduces enciphered data from a disk-shaped record medium (101) on which are recorded data enciphered by at least one encryption operation and key storage site information specifying an arraying site for at least one key information item used for deciphering the enciphered data. The apparatus includes a reproducing head device (212) for reading the enciphered data and the key storage site information from the record medium (101), a TOC decoder (219), a CPU (224) and a digital signal processing circuit (220) for decoding the enciphered data using the key information stored on the site designated in accordance with the key storage site information.

公开(公告)号：AU7458301A

公开(公告)日：2002-01-02

申请号：AU7458301

申请日：2001-06-21

Applicant: SONY CORP

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

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

Abstract: 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：NO20015908D0

公开(公告)日：2001-12-03

申请号：NO20015908

申请日：2001-12-03

Applicant: SONY CORP

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

IPC: G06F12/14 ,  G06F1/00 ,  G06F21/10 ,  G06F21/62 ,  G11B20/00 ,  H04L9/08 ,  H04L

Abstract: A content key, an authentication key, and a program data etc. are transmitted with an enabling key block (EKB) in an encrypted key constitution of a tree structure. The EKB has a constitution in which a device as a leaf of the tree holds a leaf key and a limited node key, and a specific enabling key block (EKB) is generated and distributed to a group specified by a specific node to limit devices that can be renewed. As the devices that do not belong to the group cannot perform decryption, the security for distributing keys etc. can be secured. Thus, distribution of various kinds of keys or data is executed in an encryption key constitution of a tree structure to realize an information processing system and method enabling to distribute data efficiently and safely.

公开(公告)号：AU4470901A

公开(公告)日：2001-10-23

申请号：AU4470901

申请日：2001-04-02

Applicant: SONY CORP

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

IPC: G06F12/14 ,  G06F1/00 ,  G06F21/10 ,  G06F21/62 ,  G11B20/00 ,  H04L9/08 ,  H04L9/00 ,  G06F17/60 ,  G11B20/10 ,  G11B20/12

Abstract: A content key, an authentication key, and a program data etc. are transmitted with an enabling key block (EKB) in an encrypted key constitution of a tree structure. The EKB has a constitution in which a device as a leaf of the tree holds a leaf key and a limited node key, and a specific enabling key block (EKB) is generated and distributed to a group specified by a specific node to limit devices that can be renewed. As the devices that do not belong to the group cannot perform decryption, the security for distributing keys etc. can be secured. Thus, distribution of various kinds of keys or data is executed in an encryption key constitution of a tree structure to realize an information processing system and method enabling to distribute data efficiently and safely.

公开(公告)号：CA2372545A1

公开(公告)日：2001-10-18

申请号：CA2372545

申请日：2001-04-05

Applicant: SONY CORP

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

IPC: G06F12/14 ,  G06F21/24 ,  G11B20/00 ,  G11B20/10 ,  H04L9/08 ,  H04N5/91 ,  H04L9/00 ,  G11B20/12

Abstract: Update of a master key and a media key is transmitted along with a key updat e block (KRB) through a key distribution system of tree structure. The KRB has a structure where devices constituting leaves of the tree have a leaf key and a limited node key and creates and distributes a specific key update block (KR B) to a group specified by a specific node, thereby limiting updateable devices . Any device not belonging to the group cannot decode the data, thus ensuring the safety of key distribution. Especially, in a system using a master key under generation control, an update master key is distributed by a KRB.

公开(公告)号：HK1022060A1

公开(公告)日：2000-07-21

申请号：HK99103133

申请日：1999-07-20

Applicant: SONY CORP

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

IPC: H04L9/08 ,  G06F1/00 ,  G06F21/00 ,  G09C1/00 ,  G11B20/00 ,  H04L

Abstract: An enciphering/deciphering apparatus and method are provided by which illegal copying can be prevented with a greater degree of certainty. Data enciphered by a 1394 interface (26) of a DVD player (1) is transmitted to a personal computer (2) and a magneto-optical disk apparatus (3) through a 1394 bus (11). In the magneto-optical disk apparatus (3) with which a change to a function is not open to a user, the received data is deciphered by a 1394 interface (36). In contrast, in the personal computer (2) with which a change to a function is open to a user, the enciphered data is deciphered using a time variable key (50) by a 1394 interface (49), and a result of the decipherment is further deciphered using a session key by an application section.

公开(公告)号：AU6123199A

公开(公告)日：2000-05-01

申请号：AU6123199

申请日：1999-10-14

Applicant: SONY CORP

Inventor： MATSUYAMA SHINAKO ,  ISHIBASHI YOSHIHITO ,  KITAHARA JUN ,  ASANO TOMOYUKI ,  KITAMURA IZURU ,  OSAWA YOSHITOMO ,  OISHI TATEO

IPC: G06F21/10 ,  G06F21/44 ,  G06Q30/00 ,  G06F15/00 ,  G06F17/60 ,  H04L9/08

Abstract: An accounting module 72 generates information indicating the use permission condition of information. A decoding/encryption module 74 generates authentication information of the information indicating the permission condition. A storage module 73 stores the authentication information.

公开(公告)号：ID20227A

公开(公告)日：1998-10-29

申请号：ID980592

申请日：1998-04-20

Applicant: SONY CORP

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

IPC: H04L9/08 ,  G06F1/00 ,  G06F21/00 ,  G09C1/00 ,  G11B20/00

Abstract: An enciphering/deciphering apparatus and method are provided by which illegal copying can be prevented with a greater degree of certainty. Data enciphered by a 1394 interface (26) of a DVD player (1) is transmitted to a personal computer (2) and a magneto-optical disk apparatus (3) through a 1394 bus (11). In the magneto-optical disk apparatus (3) with which a change to a function is not open to a user, the received data is deciphered by a 1394 interface (36). In contrast, in the personal computer (2) with which a change to a function is open to a user, the enciphered data is deciphered using a time variable key (50) by a 1394 interface (49), and a result of the decipherment is further deciphered using a session key by an application section.

公开(公告)号：JP2013138435A

公开(公告)日：2013-07-11

申请号：JP2013001772

申请日：2013-01-09

Applicant: Sony Corp ,  ソニー株式会社

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

IPC: H04L9/08 ,  G06F1/00 ,  G06F21/10 ,  G06F21/62 ,  G06Q20/38 ,  G11B7/00 ,  G11B7/004 ,  G11B20/00 ,  G11B20/10 ,  H04L9/32

CPC classification number: G06F21/10 ,  G06F2211/007 ,  G06F2221/0704 ,  G06Q20/3829 ,  G11B20/00086 ,  G11B20/00094 ,  G11B20/00115 ,  G11B20/00144 ,  G11B20/00152 ,  G11B20/00188 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00224 ,  G11B20/00246 ,  G11B20/00304 ,  G11B20/00318 ,  G11B20/00347 ,  G11B20/00492 ,  G11B20/00514

Abstract: PROBLEM TO BE SOLVED: To provide an information providing device capable of improving the security in transmission of key information from an information providing side to a user side and surely specifying the user.SOLUTION: An information providing device 200 side distributes an information medium 301 having encrypted information to a user terminal 400 side, the information providing device 200 is connected to the user terminal 400 through a communication network 300, and the information providing device 200 and the user terminal 400 transmit and receive information through the communication network 300. The information providing device 200 uses a user ID and a password belonging to the user terminal 400 to encrypt the key information required to decrypt the encrypted information of the information medium 301, and the user terminal 400 uses the user ID, the password, and a reader ID to decrypt the encrypted key information transmitted from the information providing device 200. In addition, the user terminal 400 uses the key information to decrypt the encrypted information read from the information medium 301.

Abstract translation: 要解决的问题：提供一种信息提供装置，其能够提高从信息提供侧到用户侧的密钥信息的传输的安全性，并且确定地指定用户。解决方案：信息提供装置200侧分发具有 加密信息到用户终端400侧，信息提供装置200通过通信网络300连接到用户终端400，信息提供装置200和用户终端400通过通信网络300发送和接收信息。信息 提供装置200使用属于用户终端400的用户ID和密码来加密解密信息媒体301的加密信息所需的密钥信息，并且用户终端400使用用户ID，密码和读取器ID 解密从信息提供装置200发送的加密密钥信息 用户终端400使用密钥信息来解密从信息媒体301读取的加密信息。

公开(公告)号：JP2010259085A

公开(公告)日：2010-11-11

申请号：JP2010140643

申请日：2010-06-21

Applicant: Sony Corp ,  ソニー株式会社

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

IPC: H04L9/08 ,  G06F1/00 ,  G06F21/10 ,  G06F21/62 ,  G06Q20/38 ,  G11B7/00 ,  G11B7/004 ,  G11B20/00 ,  G11B20/10

CPC classification number: G06F21/10 ,  G06F2211/007 ,  G06F2221/0704 ,  G06Q20/3829 ,  G11B20/00086 ,  G11B20/00094 ,  G11B20/00115 ,  G11B20/00144 ,  G11B20/00152 ,  G11B20/00188 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00224 ,  G11B20/00246 ,  G11B20/00304 ,  G11B20/00318 ,  G11B20/00347 ,  G11B20/00492 ,  G11B20/00514

Abstract: PROBLEM TO BE SOLVED: To enhance the security in transmission of key information from an information providing side to a user side, and to reliably specify the user.
SOLUTION: An information providing device 200 side distributes an information medium having encrypted information to a user terminal 400 side, the information providing device 200 is connected to the user terminal 400 through a communication network, and the information providing device 200 and the user terminal 400 transmit and receive information through the communication network. The information providing device 200 uses a user ID and a password belonging to the user terminal 400 to encrypt the key information required to decrypt encrypted information of the information medium, and the user terminal 400 uses the user ID, the password and a reader ID to decrypt the encrypted key information transmitted from the information providing device 200. In addition, the user terminal 400 uses the key information to decrypt encrypted information read from the information medium.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提高从信息提供侧到用户侧的密钥信息的传输的安全性，并且可靠地指定用户。 解决方案：信息提供装置200侧将具有加密信息的信息介质分配给用户终端400侧，信息提供装置200通过通信网络与用户终端400连接，信息提供装置200和 用户终端400通过通信网络发送和接收信息。 信息提供装置200使用属于用户终端400的用户ID和密码来加密解密信息介质的加密信息所需的密钥信息，并且用户终端400使用用户ID，密码和读取器ID 解密从信息提供装置200发送的加密密钥信息。此外，用户终端400使用密钥信息来解密从信息介质读取的加密信息。 版权所有（C）2011，JPO＆INPIT