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1. 发明申请

WO2005036811A3 DATA CONVERTER 审中-公开
公开(公告)号：WO2005036811A3
公开(公告)日：2005-04-21
申请号：PCT/JP2004/014570
申请日：2004-09-28
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , YAMAMICHI, Masami , YOKOTA, Kaoru , OHMORI, Motoji , TATEBAYASHI, Makoto , USUI, Makoto
发明人： YOKOTA, Kaoru , OHMORI, Motoji , TATEBAYASHI, Makoto , USUI, Makoto
IPC分类号： G06F7/72
摘要： A data converter (1) capable of reducing a size of the total implementation in a device is a processing apparatus that performs secret converting processing predetermined to input data with 64 bits, the data converter including a finite field polynomial cubing unit (10), data integrating units (11a) to (11d), (12) and (13), a first converter (14), a second converter (15), a data splitting unit (16), and a data integrating unit (17). The finite field polynomial cubing unit (10) performs cubing, on the 32 bits data, in the polynomial residue class ring with a value in the finite field GF (28) as a coefficient and respectively outputs data with 32 bits.

2. 发明申请

WO2005039100A1 ENCRYPTED COMMUNICATION SYSTEM AND COMMUNICATION DEVICE 审中-公开
标题翻译：加密通信系统和通信设备
公开(公告)号：WO2005039100A1
公开(公告)日：2005-04-28
申请号：PCT/JP2004/015752
申请日：2004-10-18
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , YAMAMICHI, Masami , FUTA, Yuichi , OHMORI, Motoji , TATEBAYASHI, Makoto
发明人： FUTA, Yuichi , OHMORI, Motoji , TATEBAYASHI, Makoto
IPC分类号： H04L9/08
CPC分类号： H04L9/0844 , H04L9/30 , H04L2209/605 , H04L2209/80
摘要： In an encrypted communication system that includes a first and a second device, the first device encrypts a 1st key using a public key of the second device to generate 1st encrypted data, which is then transmitted to the second device, receives 2nd encrypted data from the second device, which is then decrypted using a secret key of the first device to obtain a 2nd key, and generates, based on the 1st and 2nd keys, a 1st encryption key for use in communication with the second device. The second device encrypts a 3rd key using a public key of the first device to generate the 2nd encrypted data, which is then transmitted to the first device, receives the 1st encrypted data, which is then decrypted using a secret key of the second device to obtain a 4th key, and generates, based on the 3rd and 4th keys, a 2nd encryption key for use in communication with the first device. The first and second devices perform encrypted communication using the 1st and 2nd encryption keys.
摘要翻译：在包括第一和第二设备的加密通信系统中，第一设备使用第二设备的公开密钥对第一密钥进行加密，以生成第一加密数据，然后将其传送到第二设备，从第二设备接收第二加密数据第二设备，然后使用第一设备的秘密密钥解密以获得第二密钥，并且基于第一和第二密钥生成用于与第二设备通信的第一加密密钥。第二设备使用第一设备的公开密钥对第三密钥进行加密以产生第二加密数据，然后将其传送到第一设备，接收第一加密数据，然后使用第二设备的秘密密钥将其解密获得第四密钥，并且基于第三和第四密钥生成用于与第一设备通信的第二加密密钥。第一和第二设备使用第一和第二加密密钥执行加密通信。

3. 发明申请

WO2004112310A1 ENCRYPTION COMMUNICATION SYSTEM 审中-公开
标题翻译：加密通信系统
公开(公告)号：WO2004112310A1
公开(公告)日：2004-12-23
申请号：PCT/JP2004/008653
申请日：2004-06-14
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , YAMAMICHI, Masami , FUTA, Yuichi , OHMORI, Motoji , TATEBAYASHI, Makoto
发明人： FUTA, Yuichi , OHMORI, Motoji , TATEBAYASHI, Makoto
IPC分类号： H04L9/08
CPC分类号： H04L9/3236 , H04L9/3093 , H04L2209/60
摘要： An encroption transmission apparatus and an encryption reception apparatus avoid attack that takes advantage of re-transmission request. A server apparatus encrypts a content key five times, thereby generating five encrypted content keys, calculates a hash value of the content key, and transmits the five encrypted content keys and the hash value. An image playback apparatus receives the five encrypted content keys and the has value, decrypts the five encrypted content keys thereby generating five content keys, calculates hash values each corresponding to the generated content keys, and compares the calculated hash values with the received hash value respectively. If at least one of the five calculated hash values matches the received hash value, the corresponding content key is considered correct. Conversely, if none of the five calculated hash values matches the received hash value, it is considered a decryption error.
摘要翻译：侵扰传输装置和加密接收装置避免利用重传请求的攻击。服务器装置对内容密钥进行五次加密，从而生成五个加密的内容密钥，计算内容密钥的哈希值，并发送五个加密的内容密钥和哈希值。图像重放装置接收五个加密的内容密钥并具有值，对五个加密的内容密钥进行解密，从而生成五个内容密钥，计算与生成的内容密钥相对应的散列值，分别将所计算的散列值与接收到的散列值进行比较。如果五个计算的散列值中的至少一个与接收的散列值匹配，则认为相应的内容密钥是正确的。相反，如果五个计算的散列值中没有一个与接收到的散列值相匹配，则被认为是解密错误。

4. 发明申请

WO2005069294A1 CONTENT REPRODUCTION APPARATUS 审中-公开
标题翻译：内容再现设备
公开(公告)号：WO2005069294A1
公开(公告)日：2005-07-28
申请号：PCT/JP2004/019479
申请日：2004-12-20
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , YOKOTA, Kaoru , OHMORI, Motoji , MORIOKA, Koichi , ISHIHARA, Hideshi , TATEBAYASHI, Makoto
发明人： YOKOTA, Kaoru , OHMORI, Motoji , MORIOKA, Koichi , ISHIHARA, Hideshi , TATEBAYASHI, Makoto
IPC分类号： G11B20/00
CPC分类号： G11B20/00086 , G11B20/10
摘要： A content reproduction apparatus (1) which reproduces digital contents, including a device key storage unit (110) which holds a device key (110a) specific to the content reproduction apparatus (1) in a manner which does not allow access from outside the content reproduction apparatus (1), a device ID storage unit (19) which holds device key index information (19a) which is in a one-to-one association with a device key (110a), an instruction code receiving unit (14a) which receives an instruction code to output index information, a device key index information obtainment processing unit (10a) which outputs, to outside, the device key index information (19a) stored in the device ID storage unit (19) based on the instruction, and the 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），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），保存与设备密钥（110a）一一对应的设备密钥索引信息（19a）的设备ID存储单元（19），指示代码接收单元（14a）接收指示代码以输出索引信息;装置密钥索引信息获取处理单元，其根据所述指令将存储在所述设备ID存储单元中的设备密钥索引信息（19a）输出到外部;以及设备密钥索引信息输出处理单元（11a）。

5. 发明申请

WO2003024109A1 INDEX-INFORMATION GENERATING APPARATUS, CONTENT PRESENTING APPARATUS, AND CONTENT PRESENTING SYSTEM 审中-公开
标题翻译：指标信息生成装置，内容呈现装置和内容呈现系统
公开(公告)号：WO2003024109A1
公开(公告)日：2003-03-20
申请号：PCT/JP2002/008719
申请日：2002-08-29
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , YAMAMICHI, Masato , OHMORI, Motoji , TATEBAYASHI, Makoto
发明人： YAMAMICHI, Masato , OHMORI, Motoji , TATEBAYASHI, Makoto
IPC分类号： H04N7/173
CPC分类号： H04N21/4758 , G06Q30/02 , H04N7/162 , H04N7/17318 , H04N21/25435 , H04N21/2547 , H04N21/47202 , H04N21/4755 , H04N21/812 , H04N21/8352
摘要： To provide a broadcasting system in which a content user can select CMs that he or she wants. A sub-content index-information presenting unit presents sub-content index information. A user selects in advance sub-contents that he or she wants to view, by referring to the sub-content index information, and views only the selected sub-contents.
摘要翻译：为了提供其中内容用户可以选择他或她想要的CM的广播系统。子内容索引信息呈现单元呈现子内容索引信息。用户通过参考子内容索引信息预先选择他或她想要查看的子内容，并仅查看所选择的子内容。

6. 发明申请

WO2004064313A1 CONTENT PROTECTION SYSTEM, KEY DATA GENERATION APPARATUS, AND TERMINAL APPPARATUS 审中-公开
标题翻译：内容保护系统，关键数据生成装置和终端APPPARATUS
公开(公告)号：WO2004064313A1
公开(公告)日：2004-07-29
申请号：PCT/JP2004/000155
申请日：2004-01-13
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , NAKANO, Toshihisa , OHMORI, Motoji , MATSUZAKI, Natsume , TATEBAYASHI, Makoto , YAMAMOTO, Naoki , ISHIHARA, Hideshi
发明人： NAKANO, Toshihisa , OHMORI, Motoji , MATSUZAKI, Natsume , TATEBAYASHI, Makoto , YAMAMOTO, Naoki , ISHIHARA, Hideshi
IPC分类号： H04L9/08
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。

7. 发明申请

WO2002078419A2 DATA PROTECTION SYSTEM THAT PROTECTS DATA BY ENCRYPTING THE DATA 审中-公开
标题翻译：数据保护系统，通过加密数据来保护数据
公开(公告)号：WO2002078419A2
公开(公告)日：2002-10-10
申请号：PCT/JP2002/003055
申请日：2002-03-28
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , NAKANO, Toshihisa , OHMORI, Motoji , MATSUZAKI, Natsume , TATEBAYASHI, Makoto
发明人： NAKANO, Toshihisa , OHMORI, Motoji , MATSUZAKI, Natsume , TATEBAYASHI, Makoto
IPC分类号： G11B20/00 , G11B20/10 , H04L9/08 , H04L29/06 , H04N5/913
CPC分类号： H04L9/08 , G06F21/10 , G06F2221/2107 , G11B20/00086 , G11B20/0021 , H04L9/0822 , H04L9/0836 , H04L9/0891 , H04L63/064 , H04L63/065 , H04L2209/60 , H04L2209/80 , H04L2463/101 , H04N5/913 , H04N7/1675 , H04N21/2347 , H04N21/26606 , H04N21/4325 , H04N21/4405 , H04N2005/91364
摘要： The object of the present invention is to provide a data protection system that reduces to a degree the amount of encrypted data that is distributed to a multiplicity of terminals, and that has a structure in which a terminal whose decryption keys are exposed by a dishonest party is made unable to decrypte the data correctly, while other terminals are able to decrypt the data correctly. The present invention is a data protection system that includes a multiplicity of terminals, and an encryption device that encrypts distribution data that is distributed to each terminal. Each terminal is corresponded with one node on a lowest level of 4-ary tree structure or the like that has a plurality of hierarchies. The data protection system, for each node in the tree structure, excluding those on the lowest level, determines a plurality of combination patterns that include combinations of two or more of all four nodes that are reached one level below the node, decides an individual decryption key for each determined combination pattern, further decides an individual decryption key for each node on the lowest level, and has each terminal store all decryption keys decided for the nodes on the path from the node on the lowest level that corresponds to the terminal through to the node on the highest level. The data protection system prescribes nodes reached from the node on the lowest level that corresponds to the terminal through to the node on the highest level that correspond to a terminal that has been dishonestly analyzed as invalid nodes. For invalid nodes, other than invalid nodes on the lowest level, the data protection system designates an encryption key that corresponds to the decryption key decided in correspondence with the combination pattern that combines all nodes, excluding invalid nodes, of the four nodes that are reached one level below the node, and has the encryption device encrypt distribution data that uses each of the designated encryption keys.
摘要翻译：本发明是一种包括多个终端的数据保护系统，以及加密分发给每个终端的分发数据的加密装置。每个终端对应于具有多个层次结构的最低级别的4元树结构等上的一个节点。数据保护系统对树结构中的每个节点（不包括最低级别的节点）确定多个组合模式，其包括到达节点下方一级的所有四个节点中的两个或更多个的组合，决定个体解密对每个确定的组合模式的密钥进一步确定最低级别上的每个节点的个人解密密钥，并且每个终端存储从与终端相对应的最低级上的节点到路径上的节点所决定的所有解密密钥，节点在最高级别。

8. 发明申请

WO2005073037A2 DEVICE WHICH ONLY USERS HAVING A VALID LICENSE ARE ENABLED TO USE 审中-公开
标题翻译：只有具有有效许可证的用户才能使用的设备
公开(公告)号：WO2005073037A2
公开(公告)日：2005-08-11
申请号：PCT/JP2005/001646
申请日：2005-01-28
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , FUTA, Yuichi , OHMORI, Motoji , TATEBAYASHI, Makoto
发明人： FUTA, Yuichi , OHMORI, Motoji , TATEBAYASHI, Makoto
IPC分类号： B60R25/00
CPC分类号： B60R25/04 , B60R25/24
摘要： The invention relates to a device which only users having a valid license are enabled to use. The device comprises a reading unit operable to read license information indicating a license to use the device, the license information being stored in a memory card; an inquiry unit operable to inquire of a management apparatus via a network whether the license indicated by the license information is valid or invalid; and a control unit operable to, in a case where a result of the inquiry shows that the license is invalid, perform control so as to inhibit the device from operating.
摘要翻译：本发明涉及仅具有有效许可证的用户能够使用的设备。该设备包括读取单元，用于读取指示使用该设备的许可证的许可信息，许可证信息存储在存储卡中; 查询单元，其可操作以经由网络查询管理装置，所述许可信息所指示的许可证是有效还是无效; 以及控制单元，其可操作以在所述查询的结果表明所述许可证无效的情况下执行控制以禁止所述设备操作。

9. 发明申请

WO2003030447A3 AN ENCRYPTION DEVICE, A DECRYPTING DEVICE, A SECRET KEY GENERATION DEVICE,A COPYRIGHT PROTECTION SYSTEM AND A CIPHER COMMUNICATION DEVICE 审中-公开
公开(公告)号：WO2003030447A3
公开(公告)日：2003-04-10
申请号：PCT/JP2002/009245
申请日：2002-09-11
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , OHMORI, Motoji , TATEBAYASHI, Makoto , NAGAI, Takahiro , ISHIHARA, Hideshi
发明人： OHMORI, Motoji , TATEBAYASHI, Makoto , NAGAI, Takahiro , ISHIHARA, Hideshi
IPC分类号： H04L9/32
摘要： An encryption device, a decrypting device, a secret key generation device, a copyright protection system and a cipher communication device comprise: a CRL memory unit 111 that memorizes a CRL, a device key ring memory unit 112 that memorizes a peculiar device key KD A in every IC card 210a used in a decrypting device 200a, a content key memory unit 113 that memorizes a content key Kc which is a secret key for decrypting content, a hashing function processing unit 114 that calculates a hashing value of the CRL memorized in the CRL memory unit 111, an Ex-OR unit 115 that carries out an exclusive OR between the hashing value and the device key KD A memorized in the device key ring memory unit 112, and an Enc unit 116 that encrypts the content key Kc memorized in the content key memory unit 113 with an output value of an Ex-OR unit 115.

10. 发明申请

WO2003030447A2 AN ENCRYPTION DEVICE, A DECRYPTING DEVICE, A SECRET KEY GENERATION DEVICE,A COPYRIGHT PROTECTION SYSTEM AND A CIPHER COMMUNICATION DEVICE 审中-公开
标题翻译：加密设备，解密设备，秘密密钥生成设备，版权保护系统和密码通信设备
公开(公告)号：WO2003030447A2
公开(公告)日：2003-04-10
申请号：PCT/JP2002/009245
申请日：2002-09-11
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , OHMORI, Motoji , TATEBAYASHI, Makoto , NAGAI, Takahiro , ISHIHARA, Hideshi
发明人： OHMORI, Motoji , TATEBAYASHI, Makoto , NAGAI, Takahiro , ISHIHARA, Hideshi
IPC分类号： H04L9/32
CPC分类号： G11B20/00086 , H04L9/0891 , H04L9/3268 , H04L2209/603
摘要： An encryption device, a decrypting device, a secret key generation device, a copyright protection system and a cipher communication device comprise: a CRL memory unit 111 that memorizes a CRL, a device key ring memory unit 112 that memorizes a peculiar device key KD A in every IC card 210a used in a decrypting device 200a, a content key memory unit 113 that memorizes a content key Kc which is a secret key for decrypting content, a hashing function processing unit 114 that calculates a hashing value of the CRL memorized in the CRL memory unit 111, an Ex-OR unit 115 that carries out an exclusive OR between the hashing value and the device key KD A memorized in the device key ring memory unit 112, and an Enc unit 116 that encrypts the content key Kc memorized in the content key memory unit 113 with an output value of an Ex-OR unit 115.
摘要翻译：加密设备，解密设备，密钥生成设备，版权保护系统和密码通信设备包括：存储CRL的CRL存储单元111，设备密钥环存储单元112 其存储在解密装置200a中使用的每个IC卡210a中的特有装置密钥KD A，存储作为用于解密内容的秘密密钥的内容密钥Kc的内容密钥存储单元113，散列函数处理单元114，存储在CRL存储单元111中的CRL的哈希值，对存储在设备密钥环存储单元112中的哈希值和设备密钥KD A进行异或的异或单元115以及Enc单元116 它用Ex-OR单元115的输出值加密存储在内容密钥存储单元113中的内容密钥Kc。

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