专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08144869B2 Content protection system, key data generation apparatus, and terminal apparatus 有权
标题翻译：内容保护系统，密钥数据生成装置和终端装置
公开(公告)号：US08144869B2
公开(公告)日：2012-03-27
申请号：US12112670
申请日：2008-04-30
申请人： Toshihisa Nakano , Motoji Ohmori , Natsume Matsuzaki , Makoto Tatebayashi , Naoki Yamamoto , Hideshi Ishihara
发明人： Toshihisa Nakano , Motoji Ohmori , Natsume Matsuzaki , Makoto Tatebayashi , Naoki Yamamoto , Hideshi Ishihara
IPC分类号： H04N7/167
CPC分类号： H04L63/062 , G11B20/00086 , G11B20/0021 , H04L9/0822 , H04L9/0836 , H04L9/0891 , H04L63/0428 , H04L2209/60 , H04L2463/101
摘要： A content protection system prevents illegal key acquisition, without checking uniqueness of device keys. The content protection system includes a key data generation apparatus and a user terminal. The key data generation apparatus converts first key data, which is for using content, based on a predetermined conversion rule, thereby generating second key data, encrypts the second key data using a device key held by valid terminals, and outputs the encrypted key data. The user terminal obtains the encrypted key data, decrypts the encrypted key data using a device key held by the user terminal, thereby generating second key data, converts the second key data based on a re-conversion rule corresponding to the conversion rule, thereby generating the first key data, and uses the content with use of the generated first key data.
摘要翻译：内容保护系统防止非法密钥获取，而不会检查设备密钥的唯一性。内容保护系统包括密钥数据生成装置和用户终端。密钥数据生成装置基于预定的转换规则，对使用内容的第一密钥数据进行转换，从而生成第二密钥数据，使用由有效终端保持的装置密钥对第二密钥数据进行加密，并输出加密的密钥数据。用户终端获取加密的密钥数据，使用由用户终端保存的设备密钥解密加密的密钥数据，从而生成第二密钥数据，并根据与转换规则对应的重新转换规则转换第二密钥数据，从而生成第一密钥数据，并使用所生成的第一密钥数据的内容。

2. 发明授权

US07386126B2 Content protection system, key data generation apparatus, and terminal apparatus 有权
标题翻译：内容保护系统，密钥数据生成装置和终端装置
公开(公告)号：US07386126B2
公开(公告)日：2008-06-10
申请号：US10755327
申请日：2004-01-13
申请人： Toshihisa Nakano , Motoji Ohmori , Natsume Matsuzaki , Makoto Tatebayashi , Naoki Yamamoto , Hideshi Ishihara
发明人： Toshihisa Nakano , Motoji Ohmori , Natsume Matsuzaki , Makoto Tatebayashi , Naoki Yamamoto , Hideshi Ishihara
IPC分类号： H04N7/167 , H04N7/16 , G06F17/30 , G06F7/04 , G06K9/00 , H03M1/68 , H04K1/00 , H04L9/00 , H04L9/32
CPC分类号： H04L63/062 , G11B20/00086 , G11B20/0021 , H04L9/0822 , H04L9/0836 , H04L9/0891 , H04L63/0428 , H04L2209/60 , H04L2463/101
摘要： A content protection system prevents illegal key acquisition, without checking uniqueness of device keys. The content protection system includes a key data generation apparatus and a user terminal. The key data generation apparatus converts first key data, which is for using content, based on a predetermined conversion rule, thereby generating second key data, encrypts the second key data using a device key held by valid terminals, and outputs the encrypted key data. The user terminal obtains the encrypted key data, decrypts the encrypted key data using a device key held by the user terminal, thereby generating second key data, converts the second key data based on a re-conversion rule corresponding to the conversion rule, thereby generating the first key data, and uses the content with use of the generated first key data.
摘要翻译：内容保护系统防止非法密钥获取，而不会检查设备密钥的唯一性。内容保护系统包括密钥数据生成装置和用户终端。密钥数据生成装置基于预定的转换规则，对使用内容的第一密钥数据进行转换，从而生成第二密钥数据，使用由有效终端保持的装置密钥对第二密钥数据进行加密，并输出加密的密钥数据。用户终端获取加密的密钥数据，使用由用户终端保存的设备密钥解密加密的密钥数据，从而生成第二密钥数据，并根据与转换规则对应的重新转换规则转换第二密钥数据，从而生成第一密钥数据，并使用所生成的第一密钥数据的内容。

3. 发明授权

US07831831B2 Authentication communication system, authentication communication apparatus, and authentication communication method 有权
标题翻译：认证通信系统，认证通信装置和认证通信方法
公开(公告)号：US07831831B2
公开(公告)日：2010-11-09
申请号：US10431502
申请日：2003-05-08
申请人： Motoji Ohmori , Toshihisa Nakano , Takahiro Nagai , Hideshi Ishihara , Makoto Tatebayashi
发明人： Motoji Ohmori , Toshihisa Nakano , Takahiro Nagai , Hideshi Ishihara , Makoto Tatebayashi
IPC分类号： H04L9/32
CPC分类号： G11B20/0021 , G11B20/00086 , G11B20/00246 , G11B20/00253 , G11B20/0084
摘要： An authentication communication system is capable of storing information relating to revoked devices in less area than is conventionally required.A computer unit stores in advance revocation information that indicates at least one revoked apparatus, and when authenticating a driver unit judges, based on the revocation information, whether or not the driver unit is revoked. The computer unit prohibits communication with the driver unit when the driver unit is judged to be revoked, and communicates with the driver unit when the driver unit is judged not to be revoked.
摘要翻译：认证通信系统能够以比传统上所需的更少的区域存储与撤销设备有关的信息。计算机单元预先存储指示至少一个撤销设备的撤销信息，并且当驾驶员单元的认证基于撤销信息来判断驾驶员单元是否被撤销。当驾驶员单元被判断为被吊销时，计算机单元禁止与驾驶员单元的通信，并且当驾驶员单元被判定为不被吊销时，与驾驶员单元通信。

4. 发明授权

US07647646B2 Information input/output system, key management device, and user device 有权
标题翻译：信息输入/输出系统，密钥管理设备和用户设备
公开(公告)号：US07647646B2
公开(公告)日：2010-01-12
申请号：US10414002
申请日：2003-04-16
申请人： Toshihisa Nakano , Motoji Ohmori , Makoto Tatebayashi , Hideshi Ishihara
发明人： Toshihisa Nakano , Motoji Ohmori , Makoto Tatebayashi , Hideshi Ishihara
IPC分类号： H04L9/14
CPC分类号： H04L63/0428 , G06F21/10 , G06F21/78 , G11B20/00086 , G11B20/00094 , G11B20/00115 , G11B20/00188 , G11B20/00195 , G11B20/0021 , G11B20/00246 , G11B20/00253 , G11B20/00514 , G11B20/00536 , H04L63/0442 , H04L63/0485 , H04L63/12
摘要： In an information input/output system, a user device inputs and outputs information to and from external sources including a key management device. The system includes the key management device that securely outputs invalid-device information specifying an invalid device unit that has been made invalid for use, and the user device that includes an input/output unit and a host unit. Via the input/output unit, input and output of information is enabled between the host unit and the external sources. The host unit securely receives, via the input/output unit, the invalid-device information outputted by the key management device and judges whether or not the input/output unit is an invalid device unit by referring to the received invalid-device information. When judging, that the input/output unit is an invalid device, the host unit thereafter prohibits input and output via the input/output unit. Due to this construction, the host unit can correctly judge whether or not the input/output unit is an invalid device unit.
摘要翻译：在信息输入/输出系统中，用户设备向外部来源（包括密钥管理设备）输入和输出信息。系统包括密钥管理装置，其安全地输出指定使无效的无效装置单元的无效装置信息和包括输入/输出单元和主机单元的用户装置。通过输入/输出单元，可以在主机单元和外部源之间启用信息的输入和输出。主机通过输入/输出单元安全地接收由密钥管理装置输出的无效装置信息，并通过参考接收到的无效装置信息判断输入/输出装置是否是无效的装置单元。当判断输入/输出单元是无效装置时，主机单元此后禁止通过输入/输出单元的输入和输出。由于这种结构，主机单元可以正确地判断输入/输出单元是否是无效的设备单元。

5. 发明申请

US20050078825A1 Encryption apparatus, decryption apparatus, secret key generation apparatus, and copyright protection system 有权
标题翻译：加密装置，解密装置，密钥生成装置和版权保护系统
公开(公告)号：US20050078825A1
公开(公告)日：2005-04-14
申请号：US10958551
申请日：2004-10-06
申请人： Motoji Ohmori , Makoto Tatebayashi , Hideshi Ishihara , Toshihisa Nakano
发明人： Motoji Ohmori , Makoto Tatebayashi , Hideshi Ishihara , Toshihisa Nakano
IPC分类号： G11B20/00 , H04L9/32 , H04N7/167
CPC分类号： G11B20/00086 , G11B20/0021 , G11B20/00231 , G11B20/00246 , G11B20/00347 , G11B20/00492 , G11B20/00521 , G11B20/00855 , H04L9/3268 , H04L2209/603 , H04N21/25875 , H04N21/26613 , H04N21/4623 , H04N21/63345 , H04N21/835
摘要： An encryption apparatus 100a is comprised of the following: a CRL storage unit 111 that stores a CRL; a device key ring storage unit 112 that stores a device key KD_A specific to each copyright protection module 210a used by a decryption apparatus 200a; a content key storage unit 113 that stores a content key Kc that is a secret key for encrypting a content; a hashing function processing unit 114 that calculates a hash value of the CRL stored in the CRL storage unit 111 according to a hashing function; an Ex-OR unit 115 that obtains an exclusive OR value between the hash value and the device key KD_A; and an Enc unit 116 that encrypts the content key Kc using an output value from the Ex-OR unit, and stores the hash value, the encrypted content key and the encrypted content in a DVD2a.
摘要翻译：加密装置100a包括：存储CRL的CRL存储单元111; 存储由解密装置200a使用的每个版权保护模块210a专用的设备密钥KD_A的设备密钥环存储单元112; 内容密钥存储单元113，其存储作为用于加密内容的秘密密钥的内容密钥Kc; 散列函数处理单元114，其根据哈希函数计算存储在CRL存储单元111中的CRL的哈希值; 获取哈希值和设备密钥KD_A之间的异或值的异或单元115; 以及Enc单元116，其使用来自Ex-OR单元的输出值对内容密钥Kc进行加密，并将哈希值，加密内容密钥和加密内容存储在DVD2a中。

6. 发明授权

US07484090B2 Encryption apparatus, decryption apparatus, secret key generation apparatus, and copyright protection system 有权
标题翻译：加密装置，解密装置，密钥生成装置和版权保护系统
公开(公告)号：US07484090B2
公开(公告)日：2009-01-27
申请号：US10958551
申请日：2004-10-06
申请人： Motoji Ohmori , Makoto Tatebayashi , Hideshi Ishihara , Toshihisa Nakano
发明人： Motoji Ohmori , Makoto Tatebayashi , Hideshi Ishihara , Toshihisa Nakano
IPC分类号： H04L9/00
CPC分类号： G11B20/00086 , G11B20/0021 , G11B20/00231 , G11B20/00246 , G11B20/00347 , G11B20/00492 , G11B20/00521 , G11B20/00855 , H04L9/3268 , H04L2209/603 , H04N21/25875 , H04N21/26613 , H04N21/4623 , H04N21/63345 , H04N21/835
摘要： An encryption apparatus 100a including: a CRL storage unit 111 storing a CRL; a device key ring storage unit 112 storing a device key KD_A specific to each copyright protection module 210a used by a decryption apparatus 200a; a content key storage unit 113 storing a content key Kc that is a secret key for encrypting a content; a hashing function processing unit 114 calculating a hash value of the CRL stored in the CRL storage unit 111 according to a hashing function; and an Ex-OR unit 115 obtaining an exclusive OR value between the hash value and the device key KD_A. The encryption apparatus also includes an Enc unit 116 encrypting the content key Kc using an output value from the Ex-OR unit, and storing the hash value, the encrypted content key and the encrypted content in a DVD2a.
摘要翻译：一种加密装置100a，包括：存储CRL的CRL存储单元111; 存储由解密装置200a使用的每个版权保护模块210a专用的设备密钥KD_A的设备密钥环存储单元112; 存储作为用于加密内容的秘密密钥的内容密钥Kc的内容密钥存储单元113; 哈希函数处理单元114，根据散列函数计算存储在CRL存储单元111中的CRL的哈希值; 和异或单元115获得哈希值和设备密钥KD_A之间的异或值。加密装置还包括Enc单元116，其使用来自Ex-OR单元的输出值加密内容密钥Kc，并将散列值，加密内容密钥和加密内容存储在DVD2a中。

7. 发明授权

US07373503B2 Public key certificate revocation list generation apparatus, revocation judgement apparatus, and authentication system 有权
标题翻译：公钥证书撤销列表生成装置，撤销判定装置和认证系统
公开(公告)号：US07373503B2
公开(公告)日：2008-05-13
申请号：US10419251
申请日：2003-04-21
申请人： Toshihisa Nakano , Motoji Ohmori , Makoto Tatebayashi , Hideshi Ishihara
发明人： Toshihisa Nakano , Motoji Ohmori , Makoto Tatebayashi , Hideshi Ishihara
IPC分类号： H04L9/00
CPC分类号： G11B20/00086 , G11B20/0021 , H04L9/3268 , H04L2209/60
摘要： An authentication system is provided having a revocation list generation apparatus that constructs and stores a revocation list in a tree structure, the revocation list generation apparatus being used in combination with a revocation judgment apparatus. The authentication system improves upon conventional authentication systems because the memory capacity to store a Certificate Revocation List (CRL) in order to identify revoked certificates is reduced. The tree structure corresponds to public key certificate, which are identified by leaf identifies, and nodes from a leaf that corresponds to a revoked public key certificate.
摘要翻译：提供一种认证系统，具有构造并存储树形结构中的撤销列表的撤销列表生成装置，撤销列表生成装置与撤销判断装置结合使用。认证系统改进了常规认证系统，因为减少了用于存储证书吊销列表（CRL）以识别撤销证书的存储容量。树结构对应于由叶标识识别的公钥证书，以及对应于撤销的公钥证书的叶的节点。

8. 发明授权

US07620993B2 Copyright protection system, key generation apparatus, recording apparatus, reproduction apparatus, read-out apparatus, decryption apparatus, recording medium, recording method and program 有权
标题翻译：版权保护系统，密钥生成装置，记录装置，再现装置，读出装置，解密装置，记录介质，记录方法和程序
公开(公告)号：US07620993B2
公开(公告)日：2009-11-17
申请号：US10563797
申请日：2004-07-30
申请人： Naoki Yamamoto , Hideshi Ishihara , Makoto Tatebayashi , Toshihisa Nakano
发明人： Naoki Yamamoto , Hideshi Ishihara , Makoto Tatebayashi , Toshihisa Nakano
IPC分类号： H04N7/16
CPC分类号： H04N7/165 , G11B20/00086 , G11B20/0021 , G11B20/00246 , G11B20/00362 , G11B20/00492 , G11B20/00536 , G11B2220/2562 , H04N5/85 , H04N5/913 , H04N21/2585 , H04N21/26613 , H04N21/4334 , H04N21/4405 , H04N21/4408 , H04N21/4623 , H04N21/835 , H04N2005/91364
摘要： Apparatuses are classified into a plurality of categories, and based on a media key and device key data held by apparatuses belonging to the respective categories, revocation data intended for revoking the device key held by a specific apparatus of the respective categories is generated for the respective categories, and recorded on a recording medium.
摘要翻译：设备被分为多个类别，并且基于由属于各个类别的设备所保存的媒体密钥和设备密钥数据，生成用于撤销由各个类别的特定设备保存的设备密钥的撤销数据类别，并记录在记录介质上。

9. 发明申请

US20060168357A1 Information input/output system 审中-公开
标题翻译：信息输入/输出系统
公开(公告)号：US20060168357A1
公开(公告)日：2006-07-27
申请号：US10562816
申请日：2004-07-08
申请人： Toshihisa Nakano , Makoto Tatebayashi , Naoki Yamamoto , Hideshi Ishihara
发明人： Toshihisa Nakano , Makoto Tatebayashi , Naoki Yamamoto , Hideshi Ishihara
IPC分类号： G06F3/00
CPC分类号： G11B20/0021 , G06F2221/2129 , G11B20/00086 , G11B20/00188 , G11B20/00195 , G11B20/00246 , G11B20/00253 , G11B20/00521 , H04L9/3268 , H04L2209/60
摘要： An input/output (IO) system reduces the processing load involved in judging whether a device is valid or revoked. The system is constituted from an input/output (IO) device and an information usage device. The IO device outputs an identifier (ID) list to the information usage device, the ID list including one or more identifiers (IDs), arranged according to a predetermined rule, that each correspond to a different valid or revoked device. The information usage device uses the received ID list to specify a target range that includes a target ID stored by the information usage device, and outputs range information indicating the specified target range to the IO device, which uses the received range information in judging whether the information usage device is valid or revoked.
摘要翻译：输入/输出（IO）系统减少了判断设备是有效还是撤销时所涉及的处理负担。该系统由输入/输出（IO）设备和信息使用设备构成。 IO设备向信息使用设备输出标识符（ID）列表，ID列表包括根据预定规则排列的一个或多个标识符（ID），每个标识符（ID）每个对应于不同的有效或撤销的设备。信息使用装置使用接收到的ID列表来指定包括由信息使用装置存储的目标ID的目标范围，并且向IO设备输出指示指定目标范围的范围信息，该IO设备使用接收到的范围信息来判断是否信息使用设备有效或被撤销。

10. 发明授权

US08140675B2 Content reproduction apparatus 有权
标题翻译：内容再现装置
公开(公告)号：US08140675B2
公开(公告)日：2012-03-20
申请号：US10580178
申请日：2004-12-20
申请人： Kaoru Yokota , Motoji Ohmori , Koichi Morioka , Hideshi Ishihara , Makoto Tatebayashi
发明人： Kaoru Yokota , Motoji Ohmori , Koichi Morioka , Hideshi Ishihara , Makoto Tatebayashi
IPC分类号： G06F15/173
CPC分类号： G11B20/00086 , G11B20/10
摘要： A content reproduction apparatus (1) which reproduces digital contents, and includes a device key storage unit (110) holding a device key (110a) specific to the content reproduction apparatus (1) in a manner that does not allow access from outside the content reproduction apparatus (1). The content reproduction apparatus (1), also includes a device ID storage unit (19) holding device key index information (19a) that is in a one-to-one association with a device key (110a), an instruction code receiving unit (14a) receiving an instruction code to output index information, a device key index information obtainment processing unit (10a) outputting, to outside, the device key index information (19a) stored in the device ID storage unit (19) based on the instruction, and a device key index information output processing unit (11a).
摘要翻译：一种再现数字内容的内容再现装置（1），并且包括以不允许从内容外部访问的方式保存特定于内容再现装置（1）的设备密钥（110a）的设备密钥存储单元（110）再现装置（1）。内容再现装置（1）还包括与设备密钥（110a）一一对应的设备密钥索引信息（19a）的设备ID存储单元（19），指令代码接收单元接收用于输出索引信息的指令代码的设备密钥索引信息获取处理单元，基于该指令将存储在设备ID存储单元中的设备密钥索引信息（19a）输出到外部，和设备密钥索引信息输出处理单元（11a）。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式