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    • 2. 发明申请
    • INFORMATION SECURITY APPARATUS
    • 信息安全设备
    • US20100031065A1
    • 2010-02-04
    • US12443736
    • 2007-11-02
    • Yuichi FutaKaoru YokotaMasao NonakaManabu MaedaNatsume Matsuzaki
    • Yuichi FutaKaoru YokotaMasao NonakaManabu MaedaNatsume Matsuzaki
    • G06F12/14G06F11/07
    • H04L9/3242H03K3/0315H04L9/0866
    • Provided is an information security apparatus (1100) that has enhanced stability and confidentiality of a hash key. The information security apparatus (1100) includes an information generating PUF unit (1104) that has tamper resistance set, using physical characteristics, so as to output a preset hash key, a partial error-correction information storage unit (1107) that stores partial error-correction information, an error correcting PUF unit (1106) that has tamper-resistance set, using physical characteristics, so as to output error-correcting PUF information, an error-correction information generating unit (1108) that generates error-correction information using partial correction information and the error-correcting PUF information, and an error correcting unit (1105) that corrects an error for the hash key outputted from the information generating PUF unit (1104) and outputs an error-corrected hash key.
    • 提供了具有增强的散列密钥的稳定性和机密性的信息安全装置(1100)。 信息安全装置(1100)包括使用物理特性设置了防篡改设置的信息生成PUF单元(1104),以便输出预设的散列密钥,存储部分错误的部分纠错信息存储单元(1107) 校正信息,使用物理特性设置了防篡改设置的纠错PUF单元(1106),以便输出纠错PUF信息;纠错信息生成单元(1108),其使用 部分校正信息和错误校正PUF信息,以及纠错单元(1105),其纠正从信息生成PUF单元(1104)输出的散列密钥的错误,并输出纠错散列密钥。
    • 3. 发明申请
    • GROUP SUBORDINATE TERMINAL, GROUP MANAGING TERMINAL, SERVER, KEY UPDATING SYSTEM, AND KEY UPDATING METHOD THEREFOR
    • 集团子终端,集团管理终端,服务器,主要更新系统及其主要更新方法
    • US20100014677A1
    • 2010-01-21
    • US12147126
    • 2008-06-26
    • Taichi SatoKaoru YokotaNatsume MatsuzakiYuichi FutaTetsuya InoueMasao Nonaka
    • Taichi SatoKaoru YokotaNatsume MatsuzakiYuichi FutaTetsuya InoueMasao Nonaka
    • H04L9/08
    • H04L9/0833H04L9/0891H04L2209/60
    • Provided is a group subordinate terminal in a key updating system that includes a server and a group of terminals including: a group managing terminal; and group subordinate terminals including the group subordinate terminal, the group subordinate terminal comprising: a group withdrawal request processing unit which transmits a group withdrawal request to the group managing terminal in response to an instruction to update its apparatus-unique key, the group withdrawal request requesting for withdrawal of the group subordinate terminal from the group; an update apparatus-unique key requesting unit which requests for another apparatus-unique key by transmitting to the server a group withdrawal certificate indicating that the withdrawal of the group subordinate terminal from the group of terminals is completed through invalidation of its group key; and an update processing unit which updates the apparatus-unique key held in an apparatus-unique key holding unit to the another apparatus-unique key obtained from the server.
    • 提供了一种密钥更新系统中的组下属终端,其包括服务器和一组终端,包括:组管理终端; 组群下属终端包括:群组提取请求处理单元,响应于更新其装置唯一密钥的指令向组管理终端发送组提款请求,组提款请求 要求集团下属终端从集团撤出; 更新设备唯一密钥请求单元,其通过向服务器发送指示通过其组密钥的无效来完成组从属终端的撤销而完成的组取出证书来请求另一设备唯一密钥; 以及更新处理单元,其将从设备唯一密钥保存单元保存的设备唯一密钥更新为从服务器获得的另一设备唯一密钥。
    • 5. 发明授权
    • Authentication system, authentication device, terminal, and verifying device
    • 认证系统,认证设备,终端和验证设备
    • US08850210B2
    • 2014-09-30
    • US11916643
    • 2006-06-02
    • Kaoru YokotaNatsume MatsuzakiMasao Nonaka
    • Kaoru YokotaNatsume MatsuzakiMasao Nonaka
    • H04L9/32H04L29/06
    • H04L9/3247H04L63/0823H04L2209/60
    • An authentication system, including a service use device 1 which presents blurred information obtained by blurring certification information desired to be certified, service providing devices 3a to 3c which verify the validity of blurred information presented by the service use device 1, and an authentication device 2 which supports the service use device 1 to issue valid blurred information. The authentication device 2 adds a digital signature to information including certification information and blurred information, and generates authentication information including the obtained digital signature, certification information, and blurred information (S2). The service use device 1 generates, based on the authentication information generated in the authentication device 2, blurred authentication information including blurred information selected according to an instruction from a user, instruction information representing the instruction, and a digital signature (S4). The service providing devices 3a to 3c verify the validity of blurred information indicated by instruction information included in the blurred authentication information generated by the service use device 1, based on the digital signature included in the blurred authentication information (S6).
    • 一种验证系统,包括:服务使用装置1,其提供通过使期望认证的认证信息模糊而获得的模糊信息;验证服务使用装置1呈现的模糊信息的有效性的服务提供装置3a至3c;以及认证装置2 其支持服务使用装置1发出有效的模糊信息。 认证装置2将数字签名添加到包括认证信息和模糊信息的信息,并且生成包括所获得的数字签名,认证信息和模糊信息的认证信息(S2)。 服务使用装置1基于认证装置2中生成的认证信息,生成包含根据来自用户的指示而选择的模糊信息,表示指示的指示信息和数字签名的模糊认证信息(S4)。 服务提供装置3a〜3c基于包含在模糊认证信息中的数字签名(S6),验证包含在由服务使用装置1生成的模糊认证信息中的指示信息所表示的模糊信息的有效性。
    • 8. 发明授权
    • Authentication system, signature creating device, and signature verifying device
    • 认证系统,签名创建设备和签名验证设备
    • US08332649B2
    • 2012-12-11
    • US12092785
    • 2006-10-26
    • Kaoru YokotaNatsume MatsuzakiMasao Nonaka
    • Kaoru YokotaNatsume MatsuzakiMasao Nonaka
    • H04L9/32
    • H04L9/3255H04L2209/08H04L2209/16
    • A signature generating device generating digital signature data for certifying authenticity of information of a person, and obfuscating the information. The signature generating device includes a storage unit storing attribute information concerning the person and a private key corresponding to the attribute information, an obfuscated information generating unit selecting one or more pieces of dummy information in relation to the attribute information, and generating the obfuscated information including the attribute information and the dummy information; and a public key obtaining unit obtaining a public key corresponding to the attribute information and public keys respectively corresponding to the dummy information. The signature generating device also includes a signature generating unit generating digital signature data by performing a ring signature generation process to the obfuscated information, using the private key and the public key corresponding to the attribute information and using the public keys corresponding to dummy information.
    • 一种签名生成装置,用于生成用于验证人的信息的真实性的数字签名数据,以及模糊该信息。 签名产生装置包括:存储单元,存储关于该人的属性信息和与属性信息相对应的专用密钥;混淆信息生成单元,选择与该属性信息相关的一个或多个虚拟信息,以及生成混淆信息, 属性信息和虚拟信息; 以及公开密钥获取单元,获得与分别对应于虚拟信息的属性信息和公钥对应的公开密钥。 签名生成装置还包括签名生成部,其使用与属性信息对应的私钥和公开密钥,并使用与虚拟信息对应的公开密钥,对混淆信息执行环形签名生成处理来生成数字签名数据。
    • 9. 发明授权
    • Information security device
    • 信息安全设备
    • US08015614B2
    • 2011-09-06
    • US11916587
    • 2006-06-09
    • Natsume MatsuzakiKaoru YokotaMasao Nonaka
    • Natsume MatsuzakiKaoru YokotaMasao Nonaka
    • G06F7/04G06F17/30H04N7/16
    • G06F21/85G06F21/606
    • An information security device is provided that, when information is circulated through a chain, permits changing of a usage rule for the information or collection (deletion) of the information after the circulation.An information security device (200) includes: a receiving unit (201) that receives a content and a collection command; a content storing unit (202) that stores a content and its usage rule; a collection command confirmation unit (203) that checks the validity of a received collection command; a content deletion unit (204) that deletes a content; a chain information storage unit (205) that stores chain information containing sending and receiving information of a content; a destination list storage unit (206); a sending unit (207) that sends a content and a collection command; and a control unit (208) that controls the processing for a collection command. When a collection command is sent after content distribution, the content can be collected (deleted) in the destination of circulation.
    • 提供一种信息安全装置,当通过链路传送信息时,允许在流通之后更改信息的使用规则或收集(删除)信息。 信息安全装置(200)包括:接收单元(201),其接收内容和收集命令; 内容存储单元,其存储内容及其使用规则; 检查接收到的收集命令的有效性的收集命令确认单元(203) 内容删除单元,其删除内容; 连锁信息存储单元,其存储包含内容的发送和接收信息的链接信息; 目的地列表存储单元(206); 发送单元(207),发送内容和收集命令; 以及控制收集命令的处理的控制单元(208)。 内容分发后发送收集命令时,可以在流通目的地收集(删除)内容。
    • 10. 发明申请
    • DATA ENCRYPTION DEVICE
    • 数据加密设备
    • US20110022851A1
    • 2011-01-27
    • US12933437
    • 2009-03-25
    • Kaoru YokotaMasao NonakaYuichi FutaNatsume Matsuzaki
    • Kaoru YokotaMasao NonakaYuichi FutaNatsume Matsuzaki
    • G06F21/24H04L9/08
    • H04L9/0894A61B5/0002H04L2209/805
    • A portable data sensor tag (2), includes a memory (24), a data communication circuit (20) which receives a wireless activation signal from an external terminal, and, in an operation using electromotive force generated by the received activation signal, receives an encryption key from the external terminal and stores the received encryption key into the memory (24), a power source (23) which supplies power, an insulator (27) which switches a power supply from the power source (23) from off to on; and a sensor circuit (22) which reads the encryption key from the memory (24), encrypts measured data using the read encryption key, and stores the encrypted measurement data into the memory (24), the sensor circuit operating using the power supplied from the power source (23) after the power supply from the power source (23) is switched on.
    • 一种便携式数据传感器标签(2),包括存储器(24),从外部端子接收无线激活信号的数据通信电路(20),并且在使用由接收到的激活信号产生的电动势的操作中接收 来自外部终端的加密密钥,将接收到的加密密钥存储到存储器(24)中,提供电力的电源(23),将来自电源(23)的电源切换到关闭的绝缘体(27) 上; 以及从存储器(24)读取加密密钥的传感器电路(22),使用读取的加密密钥加密测量数据,并将加密的测量数据存储到存储器(24)中,传感器电路使用从 在从电源(23)供电之后的电源(23)接通。