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1. 发明申请

US20170207914A1 COMPUTER-READABLE RECORDING MEDIUM, SHARED KEY GENERATION METHOD, AND INFORMATION PROCESSING TERMINAL 有权
公开(公告)号：US20170207914A1
公开(公告)日：2017-07-20
申请号：US15385538
申请日：2016-12-20
申请人： FUJITSU LIMITED
发明人： Yumi Sakemi , Ikuya Morikawa , Masahiko TAKENAKA
IPC分类号： H04L9/08 , H04L9/30 , H04L9/14
摘要： An information processing terminal generates a shared key by a public key cryptosystem using an identifier. The information processing terminal calculates a first calculation value by using an algorithm that outputs an element on an extension field of a prime field from two points on an additive cyclic group on an elliptic curve that is defined by the prime field. The information processing terminal holds the first calculation value. The information processing terminal calculates a second calculation value from a variable using an identifier of a sharer that shares the shared key, a private key of the information processing terminal, and the algorithm. The information processing terminal generates the shared key by executing a final exponentiation to each of the exponentiation of the first calculation value and the second calculation value.

2. 发明授权

US10425227B2 Computer-readable recording medium, shared key generation method, and information processing terminal 有权
公开(公告)号：US10425227B2
公开(公告)日：2019-09-24
申请号：US15385538
申请日：2016-12-20
申请人： FUJITSU LIMITED
发明人： Yumi Sakemi , Ikuya Morikawa , Masahiko Takenaka
IPC分类号： H04L29/06 , H04L9/08 , H04L9/14 , H04L9/30
摘要： An information processing terminal generates a shared key by a public key cryptosystem using an identifier. The information processing terminal calculates a first calculation value by using an algorithm that outputs an element on an extension field of a prime field from two points on an additive cyclic group on an elliptic curve that is defined by the prime field. The information processing terminal holds the first calculation value. The information processing terminal calculates a second calculation value from a variable using an identifier of a sharer that shares the shared key, a private key of the information processing terminal, and the algorithm. The information processing terminal generates the shared key by executing a final exponentiation to each of the exponentiation of the first calculation value and the second calculation value.

3. 发明申请

US20170366525A1 APPARATUS AND METHOD FOR CONTROLLING PROFILE DATA DELIVERY 审中-公开
公开(公告)号：US20170366525A1
公开(公告)日：2017-12-21
申请号：US15591824
申请日：2017-05-10
申请人： FUJITSU LIMITED
发明人： Junji TAKAGI , Ikuya Morikawa , Takao Ogura , Dai YAMAMOTO , Yumi Sakemi , Naoya Torii
IPC分类号： H04L29/06 , H04L9/32
摘要： In a profile data delivery control apparatus, a storage unit stores therein a public key and a private key. A control unit obtains profile data including the identification information of a service provided using a server, and when the profile data satisfies a prescribed validity condition, attaches a signature to the profile data using the private key. The control unit embeds the public key to be used to verify the signature, in a client application that causes a client to perform an authentication process based on the profile data, and delivers the client application with the public key embedded.

4. 发明授权

US09760717B2 Communication device, system, and control method 有权
公开(公告)号：US09760717B2
公开(公告)日：2017-09-12
申请号：US14459387
申请日：2014-08-14
申请人： FUJITSU LIMITED
发明人： Yumi Sakemi , Tetsuya Izu , Yoshinobu Shimokawa , Tadashige Iwao
IPC分类号： G06F21/32 , G06F21/60 , G06F21/78 , G08B21/10 , G06F21/00 , H04W84/00 , G01V1/00
CPC分类号： G06F21/60 , G01V1/008 , G06F21/00 , G06F21/74 , G06F21/78 , G06F21/88 , G06F2221/2137 , G06F2221/2143 , G08B21/10 , H04W84/00
摘要： A communication device includes a memory and a processor coupled to the memory and configured to, when a first vibration is detected in the communication device, set a certain state that protects information stored in the memory, and cancel the certain state based on receiving from another communication device a notification indicating that the other communication device detected a second vibration.

5. 发明申请

US20170208062A1 MUTUAL AUTHENTICATION METHOD AND AUTHENTICATION APPARATUS 有权
公开(公告)号：US20170208062A1
公开(公告)日：2017-07-20
申请号：US15405830
申请日：2017-01-13
申请人： FUJITSU LIMITED
发明人： Ikuya Morikawa , Yumi Sakemi , Masahiko TAKENAKA
IPC分类号： H04L29/06 , H04L9/30 , H04W12/04 , H04L9/14 , H04L9/08 , H04W12/06
CPC分类号： H04L63/0869 , H04L9/0844 , H04L9/0847 , H04L9/0877 , H04L9/14 , H04L9/30 , H04L9/3073 , H04L9/3273 , H04L63/0428 , H04L63/06 , H04L63/061 , H04W12/04 , H04W12/06
摘要： A first device generates first encrypted data from a second public key corresponding to second ID regarding a second device and a first random number and transmits first ID regarding the first device, second ID, and first encrypted data. The second device generates second encrypted data from a first public key corresponding to the first ID and a second random number, generates second verification data by generating a second shared-key candidate from the second random number, the first encrypted data, and a second private key, and transmits the second encrypted data and second verification data. The first device generates first verification data by generating a first shared-key candidate from the first random number, the second encrypted data, and a first private key and transmits the first verification data. The first and second devices examine the second and first verification data by using the first and second shared-key candidates, respectively.

6. 发明申请

US20160204936A1 INFORMATION PROCESSING METHOD, COMPUTER-READABLE RECORDING MEDIUM, AND INFORMATION PROCESSING APPARATUS 有权
标题翻译：信息处理方法，计算机可读记录介质和信息处理装置
公开(公告)号：US20160204936A1
公开(公告)日：2016-07-14
申请号：US14969125
申请日：2015-12-15
申请人： FUJITSU LIMITED
发明人： Yumi Sakemi , Masahiko TAKENAKA , MASAYA YASUDA
IPC分类号： H04L9/08
CPC分类号： H04L9/0869 , G06F21/32 , H04L9/008 , H04L9/3093 , H04L9/3231 , H04L63/0861 , H04L2209/24 , H04L2209/34
摘要： A method according to an embodiment includes transforming registered data on a user, which is encrypted with an encryption algorithm that enables a calculation of a Hamming distance in an encrypted state, such that a calculation result of a Hamming distance between the registered data and verification data that is encrypted with the algorithm includes a Hamming distance between the verification data and the user and a Hamming distance between the verification data and a random vector generated from user's registered data; calculating a Hamming distance between the verification data and the registered data; and determining whether the input verification data is false based on a result of comparison of each of the Hamming distance between the verification data and the user and the Hamming distance between the verification data and the random vector included in the calculated Hamming distance with a threshold.
摘要翻译：根据实施例的方法包括：转换用户的注册数据，该用户使用能够计算加密状态的汉明距离的加密算法进行加密，使得登记数据与验证数据之间的汉明距离的计算结果使用算法加密的数据包括验证数据和用户之间的汉明距离以及验证数据与从用户的注册数据生成的随机向量之间的汉明距离; 计算验证数据和注册数据之间的汉明距离; 以及基于所述验证数据和所述用户之间的每个汉明距离与所述验证数据与包括在所计算的汉明距离中的随机向量之间的汉明距离与阈值的比较结果来确定输入验证数据是否为假。

7. 发明申请

US20140247786A1 NODE DEVICE AND COMMUNICATION CONTROL METHOD 有权
标题翻译：节点设备和通信控制方法
公开(公告)号：US20140247786A1
公开(公告)日：2014-09-04
申请号：US14275119
申请日：2014-05-12
申请人： FUJITSU LIMITED
发明人： Tetsuya IZU , Yumi Sakemi , Kazuyoshi Furukawa , Hisashi Kojima , Masahiko Takenaka
IPC分类号： H04W24/04 , H04L29/06 , H04L12/26
CPC分类号： H04W24/04 , H04L9/14 , H04L9/3242 , H04L29/0653 , H04L43/16 , H04L63/1466 , H04L2209/80 , H04W12/10 , H04W12/12 , H04W84/18
摘要： A node device includes: a processor configured to: receive a first packet that is transferred from a source to a destination via at least one node device including the node device, the first packet including a counter value regarding a number of transfers of the first packet, and first coding information according to a first key information and contents of the first packet, determine whether to conduct a verifying process on the first packet based on the counter value, verify the first coding information is same as a second coding information, the second coding information being generated according to the contents of the first packet and a second key information stored in the memory, change the counter value in the first packet to an initial value, and transmit the first packet including a changed counter value to the destination or any one of the plurality of node devices.
摘要翻译：节点设备包括：处理器，被配置为：经由包括节点设备的至少一个节点设备，接收从源传输到目的地的第一分组，所述第一分组包括关于第一分组的传输次数的计数器值根据第一密钥信息和第一分组的内容的第一编码信息，基于计数器值确定是否对第一分组进行验证处理，验证第一编码信息与第二编码信息相同，第二编码信息根据第一分组的内容生成的编码信息和存储在存储器中的第二密钥信息，将第一分组中的计数器值改变为初始值，并将包含改变的计数器值的第一分组发送到目的地或任何多个节点设备之一。

8. 发明授权

US09860060B2 Information processing method, computer-readable recording medium, and information processing apparatus 有权
公开(公告)号：US09860060B2
公开(公告)日：2018-01-02
申请号：US14969125
申请日：2015-12-15
申请人： FUJITSU LIMITED
发明人： Yumi Sakemi , Masahiko Takenaka , Masaya Yasuda
IPC分类号： H04L9/32 , H04L9/08 , G06F21/32 , H04L9/00 , H04L29/06 , H04L9/30
CPC分类号： H04L9/0869 , G06F21/32 , H04L9/008 , H04L9/3093 , H04L9/3231 , H04L63/0861 , H04L2209/24 , H04L2209/34
摘要： A method according to an embodiment includes transforming registered data on a user, which is encrypted with an encryption algorithm that enables a calculation of a Hamming distance in an encrypted state, such that a calculation result of a Hamming distance between the registered data and verification data that is encrypted with the algorithm includes a Hamming distance between the verification data and the user's registered data and a Hamming distance between the verification data and a random vector generated from the user's registered data; calculating a Hamming distance between the verification data and the registered data; and determining whether the input verification data is false based on a result of comparison of each of the Hamming distance between the verification data and the user's registered data and the Hamming distance between the verification data and the random vector included in the calculated Hamming distance with a threshold.

9. 发明授权

US09712499B2 Method and apparatus for cryptographic processing 有权
公开(公告)号：US09712499B2
公开(公告)日：2017-07-18
申请号：US14667832
申请日：2015-03-25
申请人： FUJITSU LIMITED
发明人： Yumi Sakemi , Tetsuya Izu , Masahiko Takenaka
IPC分类号： H04L29/06 , H04L9/32 , G06F21/00 , G06F21/32
CPC分类号： H04L63/0428 , G06F21/32 , H04L9/14 , H04L9/3226 , H04L9/3231 , H04L63/0478 , H04L63/061 , H04L63/0861
摘要： A cryptographic processing apparatus that holds a first key, and receives authentication object data upon authentication includes a communication unit and a computing unit. The communication unit communicates with a calculation apparatus and a determination apparatus. In the calculation apparatus, encrypted registration data obtained by encrypting registration data twice, once with the first key and once with a second key, is registered. The registration data is data against which the authentication object data is verified. The determination apparatus uses the second key upon the authentication. When registering the encrypted registration data in the calculation apparatus, the computing unit generates a key different from the first key, generates encrypted data by encrypting the registration data twice, once with the first key and once with the different key, transmits the different key to the determination apparatus, and the encrypted data to the calculation apparatus, through the communication unit.

10. 发明授权

US09614665B2 Encryption processing method, encryption processing device, and computer-readable recording medium storing program for encryption processing 有权
公开(公告)号：US09614665B2
公开(公告)日：2017-04-04
申请号：US14734259
申请日：2015-06-09
申请人： FUJITSU LIMITED
发明人： Masahiko Takenaka , Yumi Sakemi , Masaya Yasuda
IPC分类号： H04L29/06 , H04L9/00 , H04L9/30 , H04L9/32
CPC分类号： H04L9/008 , H04L9/3093 , H04L9/3231
摘要： An encryption processing method executed by a computer, the method includes converting a first vector using a first polynomial representation to acquire a first polynomial; converting an expression using a second polynomial representation to acquire a second polynomial, the expression being obtained based on a second vector and a random number corresponding to the first vector; converting the random number using at least one of the first polynomial representation and the second polynomial representation to acquire a random number polynomial; encrypting the first polynomial, the second polynomial, and the random polynomial using a homomorphic encryption scheme to acquire the encrypted first polynomial, the encrypted second polynomial, and the encrypted random polynomial; and collating the first vector and the second vector using the encrypted first polynomial, the encrypted second polynomial, and the encrypted random polynomial.

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