公开(公告)号：US20090208005A1

公开(公告)日：2009-08-20

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： H04L9/06 ,  H04L9/30 ,  H04L9/32

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：US08600052B2

公开(公告)日：2013-12-03

申请号：US12447872

申请日：2007-08-17

申请人： Masafumi Kusakawa ,  Tomoyuki Asano

发明人： Masafumi Kusakawa ,  Tomoyuki Asano

IPC分类号： H04L9/08

CPC分类号： H04L9/0836 ,  H04L2209/60 ,  H04N7/165 ,  H04N7/1675 ,  H04N21/25816 ,  H04N21/25875 ,  H04N21/26613 ,  H04N21/63345 ,  H04N21/8355

摘要： A key generation device according to the present invention hierarchically constructs a Y-ary tree structure where n reception devices are assigned to leaves, and forms subgroups where individual intermediate nodes existing between the leaves and a root of the Y-ary tree structure are defined as parent nodes. By providing new parameters to the individual intermediate parameters, the subgroups can be formed flexibly. In a case where no excluded customer exists or the number of excluded customers is small, the size of a header to be delivered and the calculation amount of an operation that a customer needs to perform can be reduced.

摘要翻译： 根据本发明的密钥生成装置分级地构造其中n个接收设备被分配为离开的Y元树结构，并且形成子类，其中存在于叶子之间的单个中间节点和Y元树结构的根被定义为 父节点。 通过为各个中间参数提供新参数，可以灵活地形成子组。 在没有排除的客户存在或被排除的客户的数量小的情况下，可以减少要交付的报头的大小和客户需要执行的操作的计算量。

公开(公告)号：US08150040B2

公开(公告)日：2012-04-03

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

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中的一些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：US20100262830A1

公开(公告)日：2010-10-14

申请号：US12751838

申请日：2010-03-31

申请人： Masafumi KUSAKAWA ,  Yoshikazu MIYATO

发明人： Masafumi KUSAKAWA ,  Yoshikazu MIYATO

IPC分类号： H04L9/32

CPC分类号： G06F21/77

摘要： Provided is an authentication device which includes a register in which a first-bit or a second-bit different from the first-bit is stored, m first determination units for determining whether input information and authentication information match, and for storing the first-bit in the register if a result of the determination is TRUE and for storing the second-bit in the register if FALSE, (N−m) second determination units for determining whether input information and authentication information do not match, and for storing the first-bit in the register if a result of the determination is TRUE and for storing the second-bit in the register if FALSE, and an authentication determination unit for determining that an authentication is established, in case the first-bit is stored in the register by a determination process by every first determination unit and the second-bit is stored in the register by a determination process by every second determination unit.

摘要翻译： 提供了一种认证装置，其包括其中存储与第一比特不同的第一比特或第二比特的寄存器，m个用于确定输入信息和认证信息是否匹配的第一确定单元，以及用于存储第一比特 在所述寄存器中，如果所述确定的结果为真，并且如果用于确定输入信息和认证信息不匹配的FALSE，（N-m）个第二确定单元，并且用于存储所述第一位， 如果确定的结果为真，并且如果FALSE存储在寄存器中的第二位，则存储在寄存器中，以及用于确定认证被建立的认证确定单元，在第一位被存储在寄存器中的情况下 每个第一确定单元和第二位的确定处理通过每个第二确定单元的确定处理被存储在寄存器中。

公开(公告)号：US07797532B2

公开(公告)日：2010-09-14

申请号：US10569731

申请日：2004-08-30

申请人： Takayuki Miura ,  Jouji Abe ,  Taizo Shirai ,  Masafumi Kusakawa

发明人： Takayuki Miura ,  Jouji Abe ,  Taizo Shirai ,  Masafumi Kusakawa

IPC分类号： H04L9/00

CPC分类号： H04L63/0869 ,  G06F21/445 ,  G06F2221/2129 ,  H04L63/061 ,  H04L63/0807

摘要： Disclosed herein is a device authentication system capable of authenticating devices efficiently using the common key system. When a CE device requests service offerings from a service server, the service server in turn requests the CE device to be authenticated by a device authentication server. Given the request, the CE device causes the device authentication server to perform device authentication on that device and transmits the result of the device authentication to the service server. Upon receipt of the device authentication result from the CE device, the service server causes the device authentication server to check that the authentication has been performed correctly and then starts offering services to the CE device. The CE device and device authentication server share a pass phrase, and each of the two parties checks that the other party indeed retains the pass phrase for mutual authentication.

摘要翻译： 这里公开了能够使用公共密钥系统有效地认证设备的设备认证系统。 当CE设备从服务服务器请求服务时，服务服务器又要求设备认证服务器认证CE设备。 根据请求，CE设备使设备认证服务器对该设备进行设备认证，并将设备认证的结果发送给业务服务器。 在从CE设备接收到设备认证结果后，服务服务器使设备认证服务器检查认证是否已正确执行，然后开始向CE设备提供服务。 CE设备和设备认证服务器共享密码，双方中的每一方检查对方确实保留用于相互认证的密码。

公开(公告)号：US20100086133A1

公开(公告)日：2010-04-08

申请号：US12532091

申请日：2008-02-04

申请人： Tomoyuki Asano ,  Masafumi Kusakawa

发明人： Tomoyuki Asano ,  Masafumi Kusakawa

IPC分类号： H04L9/08

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

摘要： A key providing apparatus for providing a key used for encryption or decryption of data to a predetermined terminal device is provided. The key providing apparatus includes an acquiring unit for acquiring a digraph formed by arranging at least one directional branch connecting the coordinate points on a coordinate axis having a plurality of coordinate points each corresponded with a subset representing a combination of a plurality of terminal devices, an extracting unit for extracting information of all the directional branches contained in the directional path connecting a starting point of the digraph and a predetermined coordinate point, and a key generation unit for generating a key corresponded to a subset to which a predetermined terminal deice belongs based on the digraph, where the information of the directional branch is provided to the predetermined terminal device.

摘要翻译： 提供了一种用于向预定终端设备提供用于加密或解密数据的密钥的密钥提供设备。 密钥提供装置包括获取单元，用于获取通过布置连接坐标轴的至少一个有向分支而形成的图，所述坐标点具有多个坐标点，每个坐标点各自对应于表示多个终端设备的组合的子集， 提取单元，用于提取包含在连接图的起始点和预定坐标点的方向路径中的所有方向分支的信息;以及密钥生成单元，用于生成与基于预定终端设备所属的子集相对应的密钥 有向图，其中有向分支的信息被提供给预定的终端设备。

公开(公告)号：US20100067702A1

公开(公告)日：2010-03-18

申请号：US12447872

申请日：2007-08-17

申请人： Masafumi Kusakawa ,  Tomoyuki Asano

发明人： Masafumi Kusakawa ,  Tomoyuki Asano

IPC分类号： H04L9/08 ,  H04L9/14 ,  G06F7/58

CPC分类号： H04L9/0836 ,  H04L2209/60 ,  H04N7/165 ,  H04N7/1675 ,  H04N21/25816 ,  H04N21/25875 ,  H04N21/26613 ,  H04N21/63345 ,  H04N21/8355

摘要： A key generation device according to the present invention hierarchically constructs a Y-ary tree structure where n reception devices are assigned to leaves, and forms subgroups where individual intermediate nodes existing between the leaves and a root of the Y-ary tree structure are defined as parent nodes. By providing new parameters to the individual intermediate parameters, the subgroups can be formed flexibly. In a case where no excluded customer exists or the number of excluded customers is small, the size of a header to be delivered and the calculation amount of an operation that a customer needs to perform can be reduced.

摘要翻译： 根据本发明的密钥生成装置分级地构造其中n个接收设备被分配为离开的Y元树结构，并且形成子类，其中存在于叶子之间的单个中间节点和Y元树结构的根被定义为 父节点。 通过为各个中间参数提供新参数，可以灵活地形成子组。 在没有排除的客户存在或排除的客户的数量小的情况下，可以减少要交付的报头的大小和客户需要执行的操作的计算量。

公开(公告)号：US20080256401A1

公开(公告)日：2008-10-16

申请号：US11791175

申请日：2005-11-15

申请人： Masafumi Kusakawa ,  Sumio Morioka ,  Muneki Shimada ,  Shiho Moriai ,  Dai Sasaki

发明人： Masafumi Kusakawa ,  Sumio Morioka ,  Muneki Shimada ,  Shiho Moriai ,  Dai Sasaki

IPC分类号： G06F11/07

CPC分类号： H04L1/1607

摘要： The present invention is directed to an information processing system composed of plural information processing units adapted for mutually executing data communication, and for executing data processing in which communication data has been applied. The first entity A transmits error notification data on the basis of error detection to execute initial state return processing on the condition that data reception after error notification data has been transmitted is made, and the second entity B transmits error notification data on the basis of error detection to execute initial state return processing on the condition that transmit processing of error notification data is executed. Thus, the both entities A and B can return to the initial state in a manner synchronous with each other. As a result, it becomes possible to perform reliable error recovery and data processing restart.

摘要翻译： 本发明涉及一种信息处理系统，其由适于相互执行数据通信的多个信息处理单元组成，并且用于执行其中应用了通信数据的数据处理。 第一实体A基于错误检测发送错误通知数据，以便在发送错误通知数据之后的数据接收的条件下执行初始状态返回处理，并且第二实体B基于错误发送错误通知数据 在执行错误通知数据的发送处理的条件下执行初始状态返回处理的检测。 因此，两个实体A和B可以以彼此同步的方式返回到初始状态。 结果，可以进行可靠的错误恢复和重新开始数据处理。

公开(公告)号：US20060122802A1

公开(公告)日：2006-06-08

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： G06F19/00

CPC分类号： G01R31/31719

摘要： A data processing apparatus capable of testing 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： 提供一种能够在保护电路的保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：US08300816B2

公开(公告)日：2012-10-30

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： H04L9/00

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，并且在与子集相关的中间密钥的输入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。