公开(公告)号：US20100250936A1

公开(公告)日：2010-09-30

申请号：US12725134

申请日：2010-03-16

申请人： Masafumi Kusakawa ,  Yoshikazu Miyato

发明人： Masafumi Kusakawa ,  Yoshikazu Miyato

IPC分类号： H04L9/32 ,  G06F12/14

CPC分类号： H04L9/3278

摘要： There is provided an integrated circuit includes an arithmetic circuit having input/output characteristics determined by element-specific physical characteristics; a storage unit having cipher text obtained by performing encryption processing on predetermined secret information using an output value output from the arithmetic circuit with respect to input of a predetermined value and the predetermined value input into the arithmetic circuit stored therein; and a decryption unit that restores the predetermined secret information by inputting the predetermined value stored in the storage unit into the arithmetic circuit and decrypting the cipher text stored in the storage unit using the output value output from the arithmetic circuit when the predetermined secret information is used.

摘要翻译： 提供了一种集成电路，包括具有由元件特定物理特性确定的输入/输出特性的运算电路; 存储单元，其具有通过使用从运算电路输出的输出值对输入预定值的输入值和输入到存储在其中的运算电路的预定值对预定秘密信息进行加密处理而获得的密文; 以及解密单元，其通过将存储在存储单元中的预定值输入到运算电路中并且当使用预定的秘密信息时，使用从运算电路输出的输出值来解密存储单元中存储的密文来恢复预定的秘密信息 。

公开(公告)号：US20100054465A1

公开(公告)日：2010-03-04

申请号：US12515298

申请日：2007-10-03

申请人： Tomoyuki Asano ,  Masafumi Kusakawa

发明人： Tomoyuki Asano ,  Masafumi Kusakawa

IPC分类号： H04L9/26

CPC分类号： H04L9/0822 ,  H04L9/0836 ,  H04L9/0891 ,  H04L2209/60

摘要： It relates to an information processing unit, a terminal unit, an information processing method, a key generation method and a program that enable reduction of the number of keys to be held by users and aims at providing an information processing unit capable of generating a directed-graph representing an encryption key generation logic to derive a set-key for encrypting a content or a content-key. The technique relates to a scheme that divides a set of user terminals into some subsets, allocates a set-key and an intermediate-key to each subset, and upon input of an intermediate-key correlated with a subset, outputs the set-key corresponding to the subset and the intermediate-key of the subset associated by the directed-edge. Further, it relates to a technique of replacing the directed-edge in the directed-graph with a shorter directed-edge. The effect of reducing the number of intermediate-keys held by each user is expected from the technique.

摘要翻译： 本发明涉及能够减少用户要保持的密钥数量的信息处理单元，终端单元，信息处理方法，密钥生成方法和程序，并且旨在提供一种能够产生定向的信息处理单元 其代表加密密钥生成逻辑，以导出用于加密内容或内容密钥的设置密钥。 该技术涉及将一组用户终端划分成某些子集的方案，为每个子集分配一个集合密钥和一个中间密钥，并且在输入与子集相关的中间密钥时，输出对应的集合密钥 到由所述有向边相关联的所述子集的子集和所述中间密钥。 此外，它涉及以较短的有向边替换有向图中的有向边的技术。 从技术上预期减少每个用户持有的中间密钥的数量的效果。

公开(公告)号：US20090177888A1

公开(公告)日：2009-07-09

申请号：US12266692

申请日：2008-11-07

申请人： Tomoyuki ASANO ,  Masafumi Kusakawa

发明人： Tomoyuki ASANO ,  Masafumi Kusakawa

IPC分类号： H04L9/32 ,  G06F15/173

CPC分类号： H04L9/0836 ,  H04L9/3073 ,  H04L2209/601

摘要： There is provided an information processing device including an identifier setting unit for setting an identifier to a set of terminal devices corresponding to each node of a tree structure, and a key setting unit for setting a key distributed to the terminal device based on the identifier, wherein the identifier setting unit includes a first identifier indicating the set of terminal devices corresponding to each node, and sets the identifier so as to further include a second identifier showing a correspondence relation between plurality of subsets when the set includes a plurality of subsets.

摘要翻译： 提供了一种信息处理设备，包括：标识符设置单元，用于将标识符设置为与树结构的每个节点相对应的终端设备的集合;以及密钥设置单元，用于基于标识符设置分配给终端设备的密钥， 其中，所述标识符设置单元包括指示对应于每个节点的终端设备的集合的第一标识符，并且设置所述标识符，以便当所述集合包括多个子集时，还包括表示多个子集之间的对应关系的第二标识符。

公开(公告)号：US07269529B2

公开(公告)日：2007-09-11

申请号：US11289710

申请日：2005-11-30

申请人： Masanobu Okabe ,  Masafumi Kusakawa ,  Kyoji Shibutani ,  Sumio Morioka ,  Asami Yoshida ,  Muneki Shimada ,  Shiho Moriai

发明人： Masanobu Okabe ,  Masafumi Kusakawa ,  Kyoji Shibutani ,  Sumio Morioka ,  Asami Yoshida ,  Muneki Shimada ,  Shiho Moriai

IPC分类号： G06F21/00

CPC分类号： G01R31/31719

摘要： A data processing apparatus that tests whether a secure circuit is normal or not while maintaining confidentiality of the secured circuit is provided: wherein the secured circuit conducts a self-diagnostic test thereof in accordance with a self-diagnostic test start instruction signal from a CPU, and the secured circuit outputs a self-diagnostic test result signal indicating whether the secured circuit is normal or not to the CPU.

摘要翻译： 提供了一种在保护电路的机密性的同时检查安全电路是否正常的数据处理装置：其中，所述安全电路根据来自CPU的自诊断测试开始指示信号进行自诊断测试， 并且安全电路输出指示安全电路是否正常到CPU的自诊断测试结果信号。

公开(公告)号：US08213609B2

公开(公告)日：2012-07-03

申请号：US12329673

申请日：2008-12-08

申请人： Masafumi Kusakawa ,  Seiichi Matsuda ,  Tomoyuki Asano ,  Harunaga Hiwatari

发明人： Masafumi Kusakawa ,  Seiichi Matsuda ,  Tomoyuki Asano ,  Harunaga Hiwatari

IPC分类号： H04L9/00

CPC分类号： H04L9/3073 ,  H04L9/3247 ,  H04L2209/601

摘要： A key generating device according to an embodiment of the present invention includes: a parameter determining unit that randomly determines a plurality of parameters that are needed when generating a secret key and a public key; a bilinear group selecting unit that selects a plurality of bilinear groups and bilinear mapping on the basis of the plurality of parameters; and a key generating unit that generates the secret key and the public key on the basis of the parameters and the plurality of bilinear groups.

摘要翻译： 根据本发明实施例的密钥生成装置包括：参数确定单元，其随机地确定在生成秘密密钥和公开密钥时所需的多个参数; 双线性组选择单元，其基于所述多个参数选择多个双线性组和双线性映射; 以及密钥生成单元，其基于所述参数和所述多个双线性组来生成所述秘密密钥和所述公开密钥。

公开(公告)号：US07996335B2

公开(公告)日：2011-08-09

申请号：US10680381

申请日：2003-10-08

申请人： Taizo Shirai ,  Masafumi Kusakawa

发明人： Taizo Shirai ,  Masafumi Kusakawa

IPC分类号： G06F21/00

CPC分类号： G06F21/86 ,  G06F21/10 ,  G06F2221/2109 ,  G06F2221/2129 ,  G06F2221/2137 ,  Y10S705/901 ,  Y10S705/902 ,  Y10S705/903 ,  Y10S705/904 ,  Y10S705/908 ,  Y10S705/911

摘要： Usage rights information indicating a license which is usage rights corresponding to contents is stored in a license storage device, and at the time of using the contents, the rights information is output from the license storage device to a contents using device and further transmitted to a contents distribution server, and legitimacy verification of the rights information is executed at the contents distribution server, such that contents corresponding to the rights information are transmitted to the contents using device. Thus, a device and method is realized whereby distribution of contents over a network and use thereof is enabled without detracting from safety and user convenience.

摘要翻译： 指示与内容对应的使用权的许可证的使用权信息存储在许可证存储装置中，在使用内容时，将权利信息从许可证存储装置输出到使用内容的装置，并进一步发送给 内容分发服务器和权限信息的合法性验证在内容分发服务器处执行，使得与权限信息相对应的内容被发送到使用设备的内容。 因此，实现了一种通过网络分发内容并且使用其而不会降低安全性和用户便利性的设备和方法。

公开(公告)号：US20100119058A1

公开(公告)日：2010-05-13

申请号：US12615421

申请日：2009-11-10

申请人： Seiichi Matsuda ,  Tomoyuki Asano ,  Masafumi Kusakawa ,  Harunaga Hiwatari

发明人： Seiichi Matsuda ,  Tomoyuki Asano ,  Masafumi Kusakawa ,  Harunaga Hiwatari

IPC分类号： H04L9/30

CPC分类号： H04L9/3073 ,  H04L2209/60

摘要： There is provided an information processing apparatus according to the invention including a bilinear map selection unit for selecting a bilinear map used for a predetermined operation, a group selection unit for selecting at least two types of groups G1 and G2 used in performing the operation, a determination parameter calculation unit for calculating a determination parameter including at least either one of a computation amount required for the predetermined operation and an information amount for the predetermined operation based on each of the selected at least two types of the groups, and a group decision unit for deciding a group used in performing the operation based on the determination parameter. The group decision unit exchanges contents of the groups G1 and G2 when the computation or information amount for the group G2 is more than that for the group G1.

摘要翻译： 提供了根据本发明的信息处理装置，其包括用于选择用于预定操作的双线性映射的双线性映射选择单元，用于选择执行操作中使用的组G1和G2中的至少两种类型的组选择单元， 确定参数计算单元，用于基于所选择的至少两种类型的组中的每一种来计算包括预定操作所需的计算量和预定操作的信息量中的至少一个的确定参数，以及组决策单元 用于基于确定参数来决定用于执行操作的组。 当组G2的计算或信息量大于组G1的组数量时，组决定单元交换组G1和G2的内容。

公开(公告)号：US20100077201A1

公开(公告)日：2010-03-25

申请号：US12515235

申请日：2007-10-03

申请人： Tomoyuki Asano ,  Masafumi Kusakawa

发明人： Tomoyuki Asano ,  Masafumi Kusakawa

IPC分类号： H04L9/32 ,  G06F17/30 ,  G06F12/14 ,  H04L9/00

CPC分类号： H04L9/0833 ,  H04L9/0822 ,  H04L2209/60

摘要： There is provided an information processing unit enabling reduction of the number of keys to be held by a terminal unit and the amount of calculations necessary for decryption of encrypted data. The information processing unit configures an entire binary tree made up of n-number of leaf nodes, a root node and a plurality of intermediate nodes different from the root node and the leaf nodes and divides the entire tree into a plurality of base subtrees including n1/y number of leaf nodes to form a y-level (y is a divisor of log(n)) hierarchical structure, such that root nodes of the base subtrees at a lower level coincide with leaf nodes of the base subtree at an upper level. Further, it assigns subsets of the terminal units to nodes of the respective base subtrees and generates directed graphs where directed edges connecting coordinate points on a coordinate axis are set.

摘要翻译： 提供了一种信息处理单元，其能够减少由终端单元保持的密钥的数量和解密加密数据所需的计算量。 信息处理单元配置由n个叶节点，根节点和不同于根节点和叶节点的多个中间节点组成的整个二叉树，并将整个树分为多个基本子树，包括n1 / y叶节点数以形成y级（y是log（n）的除数）分层结构，使得较低级别的基本子树的根节点与上层的基本子树的叶节点一致 。 此外，它将终端单元的子集分配给各个基本子树的节点，并生成连接坐标轴上的坐标点的有向边被设置的有向图。

公开(公告)号：US20100040235A1

公开(公告)日：2010-02-18

申请号：US12532076

申请日：2008-02-05

申请人： Masafumi Kusakawa ,  Tomoyuki Asano

发明人： Masafumi Kusakawa ,  Tomoyuki Asano

IPC分类号： H04L9/08 ,  H04L9/00

CPC分类号： H04L9/0822 ,  G06Q20/3829 ,  H04L9/0836 ,  H04L9/0861 ,  H04L2209/60

摘要： A terminal device improved with a digraph generation method in a key distribution method of various types of broadcast encryption systems is provided. The terminal device includes an acquiring unit for acquiring information related to a set, which is selected from a plurality of sets representing a combination of a plurality of terminal devices, and which represents some or all of the plurality of terminal devices; an extracting unit for extracting the set contained in the information and to which it belongs; and a digraph generation unit for generating a directional branch for generating a key corresponding to the extracted set in a predetermined digraph formed by a plurality of directional branches.

摘要翻译： 提供了一种在各种广播加密系统的密钥分发方法中利用图生成方法改进的终端设备。 终端装置包括：获取单元，用于获取与表示多个终端装置的组合的多个集合中选择的表示与多个终端装置的部分或全部的集合有关的信息; 提取单元，用于提取包含在信息中并且它所属的信息集合的集合; 以及图形生成单元，用于生成用于在由多个有向分支形成的预定有向图中生成与所提取的集合相对应的密钥的有向分支。

公开(公告)号：US08416949B2

公开(公告)日：2013-04-09

申请号：US12927515

申请日：2010-11-17

申请人： Tomoyuki Asano ,  Masafumi Kusakawa ,  Imsung Choi

发明人： Tomoyuki Asano ,  Masafumi Kusakawa ,  Imsung Choi

IPC分类号： H04L9/28 ,  H04L9/32 ,  H04L9/08

CPC分类号： H04L63/06 ,  H04L9/0866 ,  H04L9/0891 ,  H04L9/3236 ,  H04L9/3273 ,  H04L63/08 ,  H04L2209/38 ,  H04L2209/805

摘要： An actor node according to the present invention includes a dynamic change unit for temporarily changing a coverage block in which data are obtained from a sensor node and temporarily causing another actor node to obtain, on behalf of the actor node, data from the sensor node arranged in a partial region of at least a portion of the coverage blocks. The dynamic change unit obtains identification information unique to the another actor node from the another actor node. The dynamic change unit notifies, to the sensor node arranged in the partial region, the obtained identification information. The dynamic change unit notifies, to the another actor node, a portion of the hash chain and a temporary key generated using the obtained identification information and the key used for communication with the sensor node arranged in the partial region.

摘要翻译： 根据本发明的演员节点包括：动态改变单元，用于临时改变从传感器节点获得数据的覆盖块，并暂时使另一个运动员节点代表运动员节点从布置的传感器节点获得数据 在覆盖块的至少一部分的部分区域中。 动态变化单元从另一个actor节点获得另一个actor节点唯一的标识信息。 动态改变单元向布置在部分区域中的传感器节点通知获得的识别信息。 动态改变单元向另一个运动节点通知使用所获得的识别信息和用于与布置在部分区域中的传感器节点进行通信的密钥生成的哈希链的一部分和临时密钥。