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1. 发明申请

US20050157871A1 Encryption/signature method, apparatus, and program 审中-公开
标题翻译：加密/签名方法，装置和程序
公开(公告)号：US20050157871A1
公开(公告)日：2005-07-21
申请号：US10902815
申请日：2004-08-02
申请人： Yuichi Komano , Shinichi Kawamura , Atsushi Shimbo
发明人： Yuichi Komano , Shinichi Kawamura , Atsushi Shimbo
IPC分类号： H04L9/00 , H04L9/30 , H04L9/32
CPC分类号： H04L9/302 , H04L9/3247 , H04L2209/04 , H04L2209/08 , H04L2209/20
摘要： According to each embodiment of the present invention, random function operations less than three times and tight security can simultaneously be implemented. More specifically, a ciphertext y=c∥t or a signature σ=c′∥t is created as concatenated data of two data. The concatenated data is created by using a public key encryption scheme for only one (necessary part s) of the data. For this reason, tight security for the one-way characteristic of a trapdoor one-way function of the public key encryption scheme can be implemented. In addition, the output size of a first random function H′ is limited. Accordingly, a random function G for bit expansion in the conventional. OAEP++-ES scheme can be omitted. Hence, the number of times of use of random functions can be reduced to two.
摘要翻译：根据本发明的每个实施例，可以同时实现小于三次的随机功能操作和紧密的安全性。更具体地，将密文 y =c‖t或签名σ=c'‖t创建为两个数据的级联数据。连接数据是通过仅使用一个（必需的部分

2. 发明授权

US07496759B2 Multisignature method, apparatus, program, and system 失效
标题翻译：多重签名方法，设备，程序和系统
公开(公告)号：US07496759B2
公开(公告)日：2009-02-24
申请号：US11037089
申请日：2005-01-19
申请人： Yuichi Komano , Kazuo Ohta , Shinichi Kawamura , Atsushi Shimbo
发明人： Yuichi Komano , Kazuo Ohta , Shinichi Kawamura , Atsushi Shimbo
IPC分类号： H04L9/00
CPC分类号： H04L9/3255 , H04L9/3249
摘要： According to embodiments of the present invention, in a case where a ground for security is laid in difficulty in executing an inverse function operation of a trapdoor one-way function, represented by an RSA problem, even when a signature order advances, an increase of a size of a key can be inhibited. For example, when the first partial data σi−1,L exceeding (k0+k1) bits when concatenating a random number ri of k0 bits is excluded from an input of binary operation on an input side of a signature generation function. Accordingly, a size of an operation result si of the binary operation is set to be constant at (k0+k2) bits, and, as a result, an input size (key length k bits) of an RSA signature generation function is set to be constant.
摘要翻译：根据本发明的实施例，在由RSA问题所表示的陷阱单向功能的逆函数操作困难的情况下，即使在签名命令前进的情况下，增加可以禁止键的大小。例如，当从签名生成函数的输入侧的二进制操作的输入中排除连接k0个比特的随机数ri时超过（k0 + k1）比特的第一部分数据sigmai-1，L。因此，二进制运算的运算结果si的大小在（k0 + k2）位被设定为恒定，结果，将RSA签名生成函数的输入大小（密钥长度k位）设定为不变

3. 发明申请

US20050201561A1 Multisignature method, apparatus, program, and system 失效
标题翻译：多重签名方法，设备，程序和系统
公开(公告)号：US20050201561A1
公开(公告)日：2005-09-15
申请号：US11037089
申请日：2005-01-19
申请人： Yuichi Komano , Kazuo Ohta , Shinichi Kawamura , Atsushi Shimbo
发明人： Yuichi Komano , Kazuo Ohta , Shinichi Kawamura , Atsushi Shimbo
IPC分类号： H04L9/32 , H04K1/00
CPC分类号： H04L9/3255 , H04L9/3249
摘要： According to embodiments of the present invention, in a case where a ground for security is laid in difficulty in executing an inverse function operation of a trapdoor one-way function, represented by an RSA problem, even when a signature order advances, an increase of a size of a key can be inhibited. For example, when the first partial data σi-1,L exceeding (k0+k1) bits when concatenating a random number ri of k0 bits is excluded from an input of binary operation on an input side of a signature generation function. Accordingly, a size of an operation result si of the binary operation is set to be constant at (k0+k2) bits, and, as a result, an input size (key length k bits) of an RSA signature generation function is set to be constant.
摘要翻译：根据本发明的实施例，在由RSA问题所表示的陷阱单向功能的逆函数操作困难的情况下，即使在签名命令前进的情况下，增加可以禁止键的大小。例如，当连接随机数r时，当第一部分数据sigma 1> L>超过（k> 0> + 1 <1>）时，从签名生成函数的输入侧的二进制运算的输入中排除k个0的比特。因此，二进制运算的运算结果的大小被设置为在（k> 0 + 2 + 2）位处的常数，结果，RSA签名生成函数的输入大小（密钥长度k比特）被设置为恒定。

4. 发明授权

US08924448B2 Arithmetic device, method, and program product 有权
标题翻译：算术设备，方法和程序产品
公开(公告)号：US08924448B2
公开(公告)日：2014-12-30
申请号：US13422018
申请日：2012-03-16
申请人： Taichi Isogai , Kenichiro Furuta , Hirofumi Muratani , Kenji Ohkuma , Tomoko Yonemura , Yoshikazu Hanatani , Atsushi Shimbo , Hanae Ikeda , Yuichi Komano
发明人： Taichi Isogai , Kenichiro Furuta , Hirofumi Muratani , Kenji Ohkuma , Tomoko Yonemura , Yoshikazu Hanatani , Atsushi Shimbo , Hanae Ikeda , Yuichi Komano
IPC分类号： G06F7/58 , G06F7/00 , H04L9/28 , H04L9/00 , G06F7/72 , H04L9/30
CPC分类号： H04L9/003 , G06F7/725 , H04L9/3013
摘要： An arithmetic device includes an input unit inputting data that are elements of a group; a converting unit is configured, when the input data are in a second representation, to convert the input data into a first representation and to perform arithmetic operation on the converted first representation using an operand in the first representation in which at least one subcomponent is a zero element to convert the converted first representation into first converted data expressed in the first representation, and when the input data are in the first representation, to perform arithmetic operation on the input data using the operand in the first representation in which at least one subcomponent is a zero element to convert the input data into second converted data expressed in the first representation; and an operating unit that performs arithmetic processing on the first or the second converted data using secret information.
摘要翻译：运算装置包括输入单元，输入作为组的要素的数据; 配置转换单元，当输入数据处于第二表示时，将输入数据转换为第一表示，并且使用第一表示中的操作数对转换的第一表示执行算术运算，其中至少一个子组件是零元素以将转换后的第一表示转换为以第一表示表示的第一转换数据，以及当输入数据处于第一表示时，使用第一表示中的操作数对输入数据执行算术运算，其中至少一个子组件是将输入数据转换成以第一表示表示的第二转换数据的零元素; 以及操作单元，其使用秘密信息对所述第一或第二转换数据执行算术处理。

5. 发明申请

US20120069998A1 ENCRYPTION DEVICE 有权
标题翻译：加密设备
公开(公告)号：US20120069998A1
公开(公告)日：2012-03-22
申请号：US13192122
申请日：2011-07-27
申请人： Tsukasa ENDO , Hideo Shimizu , Yuichi Komano , Hanae Ikeda , Atsushi Shimbo
发明人： Tsukasa ENDO , Hideo Shimizu , Yuichi Komano , Hanae Ikeda , Atsushi Shimbo
IPC分类号： H04L9/00
CPC分类号： H04L9/003 , H04L9/0631 , H04L2209/046 , H04L2209/24
摘要： According to one embodiment, in an encryption device, a segmentation unit segments masked plain data into pieces of first segmented data. A first processing unit generates pieces of second segmented data from the pieces of first segmented data. A nonlinear transform unit generates pieces of third segmented data transformed from the pieces of second segmented data. A data integration unit integrates fourth segmented data to generate masked encrypted data. An unmask processing unit generates encrypted data from the masked encrypted data. The exclusive OR of the pieces of second segmented data matches the exclusive OR of input data, subjected to nonlinear transform processing and calculated from the plain data, and the first mask. The exclusive OR of the pieces of third segmented data matches the exclusive OR of transform data, obtained when the nonlinear transform processing is performed on the input data, and the second mask.
摘要翻译：根据一个实施例，在加密设备中，分割单元将屏蔽的普通数据分割成多个第一分段数据。第一处理单元从第一分段数据生成第二分段数据。非线性变换单元生成从第二分割数据变换的第三分段数据。数据集成单元集成第四分段数据以生成被掩蔽的加密数据。解密处理单元从掩蔽的加密数据生成加密数据。第二分段数据的异或与进行非线性变换处理并从普通数据计算的输入数据的异或与第一掩码相匹配。第三分段数据的异或与对输入数据执行非线性变换处理时获得的变换数据的异或与第二掩码相匹配。

6. 发明申请

US20100046746A1 PARAMETER GENERATING DEVICE AND CRYPTOGRAPHIC PROCESSING SYSTEM 审中-公开
标题翻译：参数生成装置和图形处理系统
公开(公告)号：US20100046746A1
公开(公告)日：2010-02-25
申请号：US12407475
申请日：2009-03-19
申请人： Tomoko YONEMURA , Hirofumi Muratani , Atsushi Shimbo , Kenji Ohkuma , Taichi Isogai , Yuichi Komano , Kenichiro Furuta , Yoshikazu Hanatani
发明人： Tomoko YONEMURA , Hirofumi Muratani , Atsushi Shimbo , Kenji Ohkuma , Taichi Isogai , Yuichi Komano , Kenichiro Furuta , Yoshikazu Hanatani
IPC分类号： H04L9/30 , H04L9/00
CPC分类号： H04L9/3013 , H04L9/3033 , H04L2209/30
摘要： A parameter generating device includes an input receiving unit that receives a degree n of an algebraic torus T including a group G in which a cryptosystem used in a torus-compressed public key cryptosystem is defined, a size W of a finite field F, and a size S of the group G, an extension-degree determining unit that determines an extension degree m of a finite field Fpm in which the algebraic torus T is defined, a first prime-number search unit that searches for a prime number p, a second prime-number search unit that searches for a prime number q, a test unit that checks whether a multiplication value nm is divisible by the prime number q, a security determining unit that determines that the cryptosystem is secure based on the multiplication value nm, and an output unit that outputs parameters when it is determined that the cryptosystem is secure.
摘要翻译：参数产生装置包括：输入接收单元，其接收包括定义了圆环压缩的公钥密码系统中使用的密码系统的组G的代数环面T的度数n，有限域F的大小W，以及组G的大小S，确定其中定义代数环面T的有限域Fpm的扩展度m的扩展度确定单元，搜索素数p的第一素数搜索单元，第二搜索素数q的素数搜索单元，检查乘数值nm是否可被素数q整除的测试单元，基于乘法值nm确定密码系统安全的安全性确定单元，以及当确定密码系统是安全的时候输出参数的输出单元。

7. 发明申请

US20100046742A1 APPARATUS AND COMPUTER PROGRAM PRODUCT FOR PERFORMING DATA COMPRESSION PROCESSING USING ALGEBRAIC TORUS 有权
标题翻译：使用ALGBRAIC TORUS执行数据压缩处理的装置和计算机程序产品
公开(公告)号：US20100046742A1
公开(公告)日：2010-02-25
申请号：US12406473
申请日：2009-03-18
申请人： Hirofumi MURATANI , Tomoko Yonemura , Atsushi Shimbo , Kenji Ohkuma , Taichi Isogai , Yuichi Komano , Kenichiro Furuta , Yoshikazu Hanatani , Hanae Ikeda
发明人： Hirofumi MURATANI , Tomoko Yonemura , Atsushi Shimbo , Kenji Ohkuma , Taichi Isogai , Yuichi Komano , Kenichiro Furuta , Yoshikazu Hanatani , Hanae Ikeda
IPC分类号： H04L9/28
CPC分类号： H04L9/3013 , H04L2209/30
摘要： An encryption processing unit executes an arithmetic operation decided in advance and outputs an arithmetic result as an element on an algebraic torus. A compressing unit outputs, when the arithmetic result is an exceptional point representing an element on the algebraic torus that cannot be compressed by a compression map for compressing an element on the algebraic torus into affine representation, a compression result obtained by compressing the arithmetic result according to the compression map and outputs, when the arithmetic result is the exceptional point, an element belonging to a specific set decided in advance that does not overlap a set to which a compression result obtained by compressing the arithmetic result, which is not the exceptional point, belongs.
摘要翻译：加密处理单元执行预先决定的算术运算，并将运算结果作为代数圆环上的元素输出。压缩单元输出当运算结果为代表代数环面上的元素的异常点时，压缩图不能被压缩图压缩成代数圆环上的元素，成为仿射表示，压缩结果按照并且当算术结果为异常点时，输出属于预先确定的特定集合的元素，该元素不与通过压缩算术结果而获得的压缩结果的集合重叠，该算法结果不是例外，属于。

8. 发明授权

US08782114B2 Arithmetic device 失效
标题翻译：算术设备
公开(公告)号：US08782114B2
公开(公告)日：2014-07-15
申请号：US13355642
申请日：2012-01-23
申请人： Tomoko Yonemura , Taichi Isogai , Hirofumi Muratani , Atsushi Shimbo , Yoshikazu Hanatani , Kenichiro Furuta , Kenji Ohkuma , Yuichi Komano , Hanae Ikeda
发明人： Tomoko Yonemura , Taichi Isogai , Hirofumi Muratani , Atsushi Shimbo , Yoshikazu Hanatani , Kenichiro Furuta , Kenji Ohkuma , Yuichi Komano , Hanae Ikeda
IPC分类号： G06F7/00 , H04L9/30
CPC分类号： H04L9/3073
摘要： According to one embodiment, a representation converting unit converts a set of n elements (h0, h1, . . . , hn−1) (hi: a member of a finite field Fp^m, 0≦i≦n−1) that is a projective representation of a member g of an n-th degree algebraic torus Tn(Fp^m) (n: positive integer, p: prime number, m: positive integer) into a limited projected representation expressed by a set of n elements (h′0, h′1, . . . , h′n−1) (h′i: a member of the finite field Fp^m, 0≦i≦n−1) in which at least one element out of the n elements is a zero element 0 or an identity element 1. An arithmetic unit omits part of Fp^m operation that is arithmetic operation in the finite field Fp^m based on a fact that an element in the set of n elements (h′0, h′1, . . . , h′n−1) represented by the limited projective representation is a zero element “0” or an identity element “1” when performing Fp^mn operation that is arithmetic operation of a finite field Fp^mn in combination with the Fp^m operation.
摘要翻译：根据一个实施例，表示转换单元将n个元素（h0，h1，...，hn-1）（hi：有限域Fp ^ m，0＆nlE; i＆nlE; n-1的成员）的集合转换为是由一组n个元素表示的有限投影表示的n阶代数环面Tn（Fp ^ m）（n：正整数，p：素数，m：正整数）的成员g的投影表示（h'0，h'1，...，h'n-1）（h'i：有限域Fp ^ m，0＆nlE; i＆nlE; n-1的成员），其中至少一个元素 n个元素是零元素0或身份元素1.算术单元省略了Fp ^ m操作的一部分，这是基于n个元素集合中的元素（h）的事实的有限域Fp ^ m中的算术运算由有限的投影表示表示的'0，h'1，...，h'n-1'是执行Fp ^ mn操作时的零元素“0”或身份元素“1”，这是运算有限的场Fp ^ mn结合 Fp ^ m操作。

9. 发明授权

US08675874B2 Apparatus for performing data compression processing using algebraic torus 失效
标题翻译：用于使用代数环面进行数据压缩处理的装置
公开(公告)号：US08675874B2
公开(公告)日：2014-03-18
申请号：US12406507
申请日：2009-03-18
申请人： Hirofumi Muratani , Tomoko Yonemura , Atsushi Shimbo , Kenji Ohkuma , Taichi Isogai , Yuichi Komano , Kenichiro Furuta , Yoshikazu Hanatani
发明人： Hirofumi Muratani , Tomoko Yonemura , Atsushi Shimbo , Kenji Ohkuma , Taichi Isogai , Yuichi Komano , Kenichiro Furuta , Yoshikazu Hanatani
IPC分类号： H04L29/06
CPC分类号： H04L9/3073 , H04L9/3013 , H04L2209/30
摘要： A compressing unit compresses an element on an algebraic torus into affine representation according to a compression map. A determining unit determines whether a target element on the algebraic torus to be compressed is an exceptional point representing an element on the algebraic torus that cannot be compressed by the compression map. The compressing unit generates, when it is determined that the target element is the exceptional point, a processing result including exceptional information indicating that the target element is the exceptional point, and generates, when it is determined that the target element is not the exceptional point, a processing result including affine representation obtained by compressing the target element according to the compression map.
摘要翻译：压缩单元根据压缩图将代数环面上的元素压缩为仿射表示。确定单元确定要压缩的代数环面上的目标元素是否是代表不能由压缩映射压缩的代数环面上的元素的异常点。当确定目标元素是异常点时，压缩单元产生包括指示目标元素是异常点的异常信息的处理结果，并且当确定目标元素不是异常点时，生成，包括通过根据压缩图压缩目标元素获得的仿射表示的处理结果。

10. 发明授权

US08538017B2 Encryption device 有权
标题翻译：加密设备
公开(公告)号：US08538017B2
公开(公告)日：2013-09-17
申请号：US13192122
申请日：2011-07-27
申请人： Tsukasa Endo , Hideo Shimizu , Yuichi Komano , Hanae Ikeda , Atsushi Shimbo
发明人： Tsukasa Endo , Hideo Shimizu , Yuichi Komano , Hanae Ikeda , Atsushi Shimbo
IPC分类号： H04L9/00
CPC分类号： H04L9/003 , H04L9/0631 , H04L2209/046 , H04L2209/24
摘要： According to one embodiment, in an encryption device, a segmentation unit segments masked plain data into pieces of first segmented data. A first processing unit generates pieces of second segmented data from the pieces of first segmented data. A nonlinear transform unit generates pieces of third segmented data transformed from the pieces of second segmented data. A data integration unit integrates fourth segmented data to generate masked encrypted data. An unmask processing unit generates encrypted data from the masked encrypted data. The exclusive OR of the pieces of second segmented data matches the exclusive OR of input data, subjected to nonlinear transform processing and calculated from the plain data, and the first mask. The exclusive OR of the pieces of third segmented data matches the exclusive OR of transform data, obtained when the nonlinear transform processing is performed on the input data, and the second mask.
摘要翻译：根据一个实施例，在加密设备中，分割单元将屏蔽的普通数据分割成多个第一分段数据。第一处理单元从第一分段数据生成第二分段数据。非线性变换单元生成从第二分割数据变换的第三分段数据。数据集成单元集成第四分段数据以生成被掩蔽的加密数据。解密处理单元从掩蔽的加密数据生成加密数据。第二分段数据的异或与进行非线性变换处理并从普通数据计算的输入数据的异或与第一掩码相匹配。第三分段数据的异或与对输入数据执行非线性变换处理时获得的变换数据的异或与第二掩码相匹配。

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