公开(公告)号：US20090254988A1

公开(公告)日：2009-10-08

申请号：US11995787

申请日：2006-07-24

申请人： Masao Nonaka ,  Kaoru Yokota ,  Natsume Matsuzaki

发明人： Masao Nonaka ,  Kaoru Yokota ,  Natsume Matsuzaki

IPC分类号： G06F21/00

CPC分类号： G06Q10/10

摘要： In a system for transmitting/receiving information, each of users of terminals subjectively determines a direct evaluation value of a party that the user knows personally and so on. Since the direct evaluation value determined in this way changes depending on the subjective evaluation criterion, the direct evaluation value is not generated based on the single evaluation criterion. In view of this, a terminal device 100A according to the present invention prestores therein content evaluation values respectively corresponding to pieces of content data that are stored therein. When transmitting a piece of content data to a terminal device, the terminal device 100A generates an entity evaluation value of the terminal device that is a transmission destination based on a content evaluation value of the transmitted piece of content data.

摘要翻译： 在用于发送/接收信息的系统中，终端用户主观地确定用户亲自认识的一方的直接评估值。 由于以这种方式确定的直接评估值根据主观评价标准而变化，所以直接评价值不是基于单个评价标准生成的。 鉴于此，根据本发明的终端装置100A在其中预先存储分别对应于存储在其中的内容数据的内容评估值。 当终端设备发送一条内容数据时，终端设备100A基于发送的内容数据的内容评估值，生成作为发送目的地的终端设备的实体评估值。

公开(公告)号：US20090074179A1

公开(公告)日：2009-03-19

申请号：US11912112

申请日：2006-04-25

申请人： Yuichi Futa ,  Natsume Matsuzaki

发明人： Yuichi Futa ,  Natsume Matsuzaki

IPC分类号： H04L9/28

CPC分类号： G06F7/725 ,  G06F2207/7261 ,  H04L9/003 ,  H04L9/3066 ,  H04L9/3252 ,  H04L2209/12 ,  H04L2209/56 ,  H04L2209/60

摘要： Resistance against simple power analysis is maintained while a smaller table is used. An IC card 100 decrypts encrypted information using elliptic curve calculation for calculating a point k*C by multiplying a point C on the elliptic curve E with a coefficient k that is a positive integer less that a prime p. The calculation of the point k*C is performed by adding a multiplication result obtained by multiplying a digit position (window) value w of the acquired coefficient k with the point C in a position corresponding to the digit position, and is performed with respect to all digit positions. When a non-negative integer exists that fulfills a condition that the acquired digit value w can be divided by 2t and cannot be divided by 2t+1, the multiplication includes adding a point obtained by multiplying a point Q with w/2t.

摘要翻译： 在使用较小的桌子的同时保持对简单功率分析的抵抗力。 IC卡100使用用于通过将椭圆曲线E上的点C乘以小于素数p的正整数的系数k来计算点k * C的椭圆曲线计算来解密加密信息。 通过将获取的系数k的数字位置（窗口）值w与点数C相对应的数位位置（窗口值）w相乘而获得的相乘结果相加，执行点k * C的计算，并且相对于 全数位置 当存在满足获取的数字值w可以除以2t并且不能被除以2t + 1的条件的非负整数时，乘法包括将通过将点Q与w / 2t相乘获得的点相加。

公开(公告)号：US20090013193A1

公开(公告)日：2009-01-08

申请号：US11886712

申请日：2006-04-07

申请人： Natsume Matsuzaki ,  Toshihisa Nakano ,  Shinichi Marui

发明人： Natsume Matsuzaki ,  Toshihisa Nakano ,  Shinichi Marui

IPC分类号： H04L9/06

CPC分类号： H04L9/0891 ,  H04L2209/60

摘要： The present invention provides an apparatus for securely acquiring a circuit configuration information set corresponding to a new cryptosystem without increasing the number of reconfigurable circuits. A content playback apparatus 100 includes an FPGA 122 that is reconfigurable. The content playback apparatus 100 stores a decryption circuit program that shows the structure of a decryption circuit that executes decryption in accordance with a prescribed cryptosystem. The FPGA is reconfigured in accordance with the program to configure the decryption circuit. The playback apparatus 100 acquires, from outside, an encrypted file that has been generated by encrypting a file including a decryption circuit program corresponding to the new cryptosystem in accordance with the prescribed cryptosystem, and decrypts the encrypted file by the decryption circuit.

摘要翻译： 本发明提供一种用于安全地获取与新密码系统对应的电路配置信息集的装置，而不增加可重构电路的数量。 内容播放装置100包括可重新配置的FPGA 122。 内容再现装置100存储解密电路程序，其显示根据规定的密码系统执行解密的解密电路的结构。 根据程序重新配置FPGA以配置解密电路。 回放装置100从外部获取通过根据规定的密码系统加密包含与新密码系统对应的解密电路程序的文件而生成的加密文件，并且通过解密电路对加密文件进行解密。

公开(公告)号：US20080235517A1

公开(公告)日：2008-09-25

申请号：US10592762

申请日：2005-03-08

申请人： Motoji Ohmori ,  Natsume Matsuzaki ,  Toshihisa Nakano

发明人： Motoji Ohmori ,  Natsume Matsuzaki ,  Toshihisa Nakano

IPC分类号： H04L9/14 ,  G06F15/177 ,  G06F12/14

CPC分类号： H04L9/0891 ,  H04L2209/12 ,  H04L2209/601

摘要： There is a demand for a device handling information with the use of encryption technology to safely and simply update the encryption schemes. The present invention offers an information security device having a plurality of encryption schemes and handling information safely and reliably, characterized by selecting one of the plurality of encryption schemes as an application encryption scheme and installing a different encryption scheme from the plurality of encryption schemes based on the application encryption scheme.

摘要翻译： 需要使用加密技术处理信息的设备来安全且简单地更新加密方案。 本发明提供一种具有多个加密方案和安全可靠地处理信息的信息安全装置，其特征在于，选择多个加密方案中的一个作为应用加密方案，并且基于多个加密方案从基于 应用加密方案。

公开(公告)号：US07296147B2

公开(公告)日：2007-11-13

申请号：US10454531

申请日：2003-06-05

申请人： Natsume Matsuzaki ,  Makoto Tatebayashi ,  Kaoru Yokota ,  Yuichi Futa ,  Motoji Ohmori ,  Hirohito Kitatora

发明人： Natsume Matsuzaki ,  Makoto Tatebayashi ,  Kaoru Yokota ,  Yuichi Futa ,  Motoji Ohmori ,  Hirohito Kitatora

IPC分类号： H04L9/00 ,  H04K1/00 ,  G06K9/00

CPC分类号： H04L9/321 ,  G06Q20/388 ,  H04L9/0822 ,  H04L9/0866 ,  H04L9/0891 ,  H04L9/0897 ,  H04L9/3273 ,  H04L12/2803 ,  H04L63/062 ,  H04L63/0853 ,  H04L63/0876 ,  H04L2209/60

摘要： In an authentication system, a key registration apparatus receives input of an identifier unique to a second device, generates first key data from the identifier according to a predetermined key generation algorithm, and transmits the generated first key data to a first device, which receives and stores the first key data, and authenticates the second device with use of the first key data. The second device stores in advance second key data generated from the identifier according to the predetermined key generation algorithm, and is authenticated by the first device with use of the second key data. Accordingly, the first and second devices cannot be registered without using the key registration apparatus, thereby preventing communication with unregistered devices. This enables usage of content to be limited to individual usage in the home of a user, and can be realized even with devices that are not connected outside the home.

摘要翻译： 在认证系统中，密钥注册装置接收对第二装置唯一的标识符的输入，根据预定的密钥生成算法从标识符生成第一密钥数据，并将生成的第一密钥数据发送到第一装置， 存储第一密钥数据，并使用第一密钥数据认证第二设备。 第二设备预先存储根据预定密钥生成算法从标识符生成的第二密钥数据，并且通过第二密钥数据由第一设备认证。 因此，在不使用密钥登记装置的情况下，不能登记第一和第二装置，从而防止与未登记装置的通信。 这使得内容的使用被限制在用户的家庭中的个人使用，并且即使使用不在家外的设备也可以实现。

公开(公告)号：US20070239615A1

公开(公告)日：2007-10-11

申请号：US11578787

申请日：2005-04-22

申请人： Natsume Matsuzaki ,  Kaoru Yokota ,  Masao Nonaka ,  Mitsuhiro Inoue ,  Tohru Nakahara ,  Akio Higashi

发明人： Natsume Matsuzaki ,  Kaoru Yokota ,  Masao Nonaka ,  Mitsuhiro Inoue ,  Tohru Nakahara ,  Akio Higashi

IPC分类号： G06Q99/00

CPC分类号： H04L9/0897 ,  G06K19/07749 ,  H04L9/085 ,  H04L2209/60 ,  H04L2209/80

摘要： A personal information management device aims to save troubles of inputting passwords and deleting personal information, to prevent others from viewing the personal information, and to maintain confidentiality of the personal information even when a mobile device is lost. Personal information storage unit 201 holds encrypted personal information, key distribution unit 204 distributes a decryption key used for decrypting the encrypted personal information into a first and a second distributed keys based on a secret sharing scheme, distributed key storage unit 205 stores thereon the first distributed key, stores the second distributed key on home device 30, and deletes the decryption key. Upon decryption, link judgment unit 210 judges link establishment. Key recovery unit 207 acquires the second distributed key from home device 30, and recovers the decryption key using the first and the second distributed keys. Decryption unit 208 decrypts the encrypted personal information using the decryption key.

摘要翻译： 个人信息管理装置旨在节省输入密码和删除个人信息的麻烦，防止其他人查看个人信息，并且即使当移动设备丢失时也保持个人信息的机密性。 个人信息存储单元201保存加密的个人信息，密钥分发单元204基于秘密共享方案将用于解密加密的个人信息的解密密钥分发到第一和第二分发密钥中，分发密钥存储单元205在其上存储第一分布式 密钥，将第二分发密钥存储在家庭设备30上，并删除解密密钥。 解密后，链接判断部210判断链路建立。 密钥恢复单元207从家庭设备30获取第二分发密钥，并且使用第一和第二分布密钥来恢复解密密钥。 解密单元208使用解密密钥解密加密的个人信息。

公开(公告)号：US07272229B2

公开(公告)日：2007-09-18

申请号：US10278082

申请日：2002-10-23

申请人： Toshihisa Nakano ,  Natsume Matsuzaki ,  Makoto Tatebayashi

发明人： Toshihisa Nakano ,  Natsume Matsuzaki ,  Makoto Tatebayashi

IPC分类号： H04L9/00

CPC分类号： G06F21/10 ,  G11B20/00086 ,  G11B20/00094 ,  G11B20/00137 ,  G11B20/00188 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00253 ,  G11B20/00333 ,  H04L9/0822 ,  H04L9/0836 ,  H04L9/0891 ,  H04L2209/605

摘要： In a system composed of a recording apparatus that records digitized content such as a movie, or a reproduction apparatus that reproduces the digitized content, and a recording medium, a media key for use in recording or reproduction is encrypted by a plurality of device keys and recorded on the recording medium. Here, the recording apparatus or the reproduction apparatus specifies the encrypted media key that it is to decrypt, from amongst the plurality of encrypted media keys. A key management apparatus records node revocation patterns assigned to nodes in a tree structure to the recording medium in a particular order, as header information of key information, together with the encrypted media keys. The recording apparatus or the reproduction apparatus specifies the encrypted media key to be decrypted, by analyzing the node revocation patterns sequentially.

摘要翻译： 在记录诸如电影的数字化内容的记录装置或再现数字化内容的再现装置以及记录介质的系统中，用于记录或再现的媒体密钥由多个设备密钥加密， 记录在记录介质上。 这里，记录装置或再现装置从多个加密媒体密钥中指定要解密的加密媒体密钥。 密钥管理装置将分配给树结构中的节点的节点撤销模式以特定顺序记录到记录介质上，作为密钥信息的头信息以及加​​密的媒体密钥。 记录装置或再现装置通过依次分析节点撤销模式来指定要解密的加密媒体密钥。

公开(公告)号：US07167559B2

公开(公告)日：2007-01-23

申请号：US10105480

申请日：2002-03-25

申请人： Takatoshi Ono ,  Natsume Matsuzaki ,  Toshihisa Nakano

发明人： Takatoshi Ono ,  Natsume Matsuzaki ,  Toshihisa Nakano

IPC分类号： H04K1/00

CPC分类号： G06F7/723 ,  G06F7/725 ,  G06F2207/7285

摘要： In an exponentiation device, a relatively large table is generated outside of a coprocessor so as to enable high-speed exponentiation to be performed using the small window method. The selection of data from the table and transfer of data to the coprocessor are conducted in parallel with a multiple-length arithmetic operation performed in the coprocessor. So as to avoid bottlenecks occurring in the data transfer between a CPU and the coprocessor, two data banks are provided in the coprocessor for storing the data to be used in the arithmetic operation. By providing two banks in the coprocessor, it is possible to use one for transferring data while data stored in the other is being used in the arithmetic operation. When the operation using the stored data has been completed, the banks are switched, and the arithmetic operation is then repeated using the newly transferred data while at the same time conducting data transfer in readiness for the following operation.

摘要翻译： 在求幂装置中，在协处理器之外产生相对大的表，以便能够使用小窗口方法执行高速乘法运算。 从协议处理器中执行的多长度算术运算并行地进行从表中选择数据并将数据传送到协处理器。 为了避免在CPU和协处理器之间的数据传输中出现瓶颈，在协处理器中提供两个数据组，用于存储要在算术运算中使用的数据。 通过在协处理器中提供两个存储体，可以使用一个用于传送数据，而另一个存储的数据正在算术运算中使用。 当使用存储的数据的操作已经完成时，这些存储体被切换，然后使用新传送的数据重复算术运算，同时进行数据传送以备以下操作。

公开(公告)号：US20050157872A1

公开(公告)日：2005-07-21

申请号：US10984665

申请日：2004-11-09

申请人： Takatoshi Ono ,  Natsume Matsuzaki ,  Yuichi Futa

发明人： Takatoshi Ono ,  Natsume Matsuzaki ,  Yuichi Futa

IPC分类号： H04L9/30 ,  H04L9/32 ,  H04L9/00

CPC分类号： H04L9/3249 ,  H04L9/302 ,  H04L2209/56

摘要： An RSA decryption apparatus that is used in an IC card or the like counters a differential fault attack. The RSA decryption apparatus computes at high speed a public key used in data verification, without having to obtain the public key from an external source. The RSA decryption apparatus includes a remainder computation unit 412 that calculates dp=d mod (p−1), and an inverse computation unit 414 that finds an inverse of dp over a residue field with p−1 as a modulus. The RSA decryption apparatus verifies a decipher text with use of the inverse of dp as the public key. The reduced bit count in inverse computation compared to if the inverse of d is found as the public key increases computing speed.

摘要翻译： 在IC卡等中使用的RSA解密装置反映差分故障攻击。 RSA解密装置高速计算用于数据验证的公开密钥，而不必从外部源获得公共密钥。 RSA解密装置包括：计算d≠p mod（p-1）的余数计算单元412，以及求出d∧ 在p-1作为模量的残留场上。 RSA解密装置使用公开密钥d D的倒数验证解密文本。 与如果将d的倒数作为公开密钥发现的逆计算相比，减少的比特数增加了计算速度。

公开(公告)号：US6028937A

公开(公告)日：2000-02-22

申请号：US728151

申请日：1996-10-09

申请人： Makoto Tatebayashi ,  Natsume Matsuzaki ,  Syunji Harada ,  Motoji Omori ,  Masayuki Kozuka ,  Kazuhiko Yamauchi

发明人： Makoto Tatebayashi ,  Natsume Matsuzaki ,  Syunji Harada ,  Motoji Omori ,  Masayuki Kozuka ,  Kazuhiko Yamauchi

IPC分类号： G06F12/00 ,  G09C1/00 ,  H04L9/10 ,  H04L9/32 ,  H04L9/00

CPC分类号： H04L9/3273 ,  G06Q20/3674 ,  H04L2209/043 ,  H04L2209/12

摘要： A supplier device 70 which supplies title data is equipped with a encryption module 74 for performing an encryption which is substitutive in nature and the user device 90 which uses the title data is equipped with a decryption module 93 for performing a decryption which corresponds to the encryption. The supplier device 70 uses this encryption module 74 to prove its own authorization and authenticate other devices. Similarly, the user device 90 uses this decryption module 93 to prove its own authorization and authenticate other devices.

摘要翻译： 提供标题数据的供应商装置70配备有用于执行本质上是替代性的加密的加密模块74，并且使用标题数据的用户装置90配备有解密模块93，用于执行与加密相对应的解密 。 供应商设备70使用该加密模块74来证明其自己的授权并认证其他设备。 类似地，用户设备90使用该解密模块93来证明其自己的授权并认证其他设备。