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11. 发明授权

US08533243B2 Representation converting apparatus, arithmetic apparatus, representation converting method, and computer program product 失效
标题翻译：表示转换装置，运算装置，表示转换方法和计算机程序产品
公开(公告)号：US08533243B2
公开(公告)日：2013-09-10
申请号：US12397648
申请日：2009-03-04
申请人： Tomoko Yonemura , Hirofumi Muratani , Kenji Ohkuma , Hanae Ikeda , Taichi Isogai , Kenichiro Furuta , Yoshikazu Hanatani
发明人： Tomoko Yonemura , Hirofumi Muratani , Kenji Ohkuma , Hanae Ikeda , Taichi Isogai , Kenichiro Furuta , Yoshikazu Hanatani
IPC分类号： G06F7/00 , G06F15/00
CPC分类号： G06F17/10
摘要： When converting an affine representation representing a 2r-th degree algebraic torus T2r(Fq) (r is a prime number, and q is an integer) to a projective representation representing a quadratic algebraic torus T2(Fq^r), a representation converting apparatus acquires member (c0, c1, . . . , cr-2), (ci is a member of a finite field Fq, where 0≦i≦r−2) of a 2r-th degree algebraic torus T2r(Fq) represented by the affine representation. The apparatus performs a multiplication operation on the acquired member. The multiplication operation is determined by a condition under which a member of a quadratic algebraic torus T2(Fq^r) is included in the 2r-th degree algebraic torus T2r(Fq), a modulus and a base of a quadratic extension, and a modulus and a base of an r-th degree extension. The representation converting apparatus then performs an addition and subtraction operation determined by the condition, the moduli, and the bases.
摘要翻译：当表示代表二次代数环面T2（Fq ^ r）的投影表示将表示2r次代数圆环T2r（Fq）（r是素数，q是整数）的仿射表示转换为表示转换装置获取成员（c0，c1，...，cr-2），（ci是有限域Fq的成员，其中0 @ i @ r-2）由2r代数圆环T2r（Fq）仿射表示。该装置对获取的成员进行乘法运算。乘法运算由二次代数圆环T2（Fq ^ r）的成员包含在第二阶代数圆环T2r（Fq）中的条件，二次扩展的模数和基数，以及模数和r度延伸的基数。然后，表示转换装置执行由条件，模数和基数确定的加法和减法运算。

12. 发明授权

US08934631B2 Decompressing apparatus and compressing apparatus 有权
标题翻译：解压缩装置和压缩装置
公开(公告)号：US08934631B2
公开(公告)日：2015-01-13
申请号：US13225964
申请日：2011-09-06
申请人： Yoshikazu Hanatani , Taichi Isogai , Hirofumi Muratani , Tomoko Yonemura
发明人： Yoshikazu Hanatani , Taichi Isogai , Hirofumi Muratani , Tomoko Yonemura
IPC分类号： H04K1/00 , H04L9/30 , G09C1/00
CPC分类号： G09C1/00 , G06F17/12 , H04L9/3066 , H04L2209/30
摘要： According to one embodiment, a decompressing apparatus includes an input unit, a calculating unit, a first selecting unit, and a decompressing unit. The input unit inputs additional data, which is obtained based on trace expression data in which an element in a subgroup of a multiplicative group of a finite field is trace-expressed and affine expression data in which the trace expression data is affine-expressed, and the trace expression data. The calculating unit calculates a plurality of solutions of simultaneous equations derived by the trace expression data. The first selecting unit selects any of a plurality of items of affine expression data in which the element is affine-expressed based on the additional data, the affine expression data being found from the solutions. The decompressing unit decompresses the selected affine expression data to the element.
摘要翻译：根据一个实施例，解压缩装置包括输入单元，计算单元，第一选择单元和解压缩单元。输入单元输入基于跟踪表达数据获得的附加数据，其中有限域的乘法组的子组中的元素被跟踪表达，并且其中仿射表达数据被仿射表达的仿射表达式数据;以及跟踪表达式数据。计算单元计算由轨迹表达数据导出的多个联立方程的解。第一选择单元基于附加数据选择多个项目的仿射表达数据中的元素进行仿射表示，从解决方案中找到仿射表达数据。解压缩单元将所选择的仿射表达式数据解压缩到元素。

13. 发明授权

US09280518B2 Public key cryptography computing device 有权
标题翻译：公钥加密计算设备
公开(公告)号：US09280518B2
公开(公告)日：2016-03-08
申请号：US13727070
申请日：2012-12-26
申请人： Tomoko Yonemura , Hirofumi Muratani , Yoshikazu Hanatani
发明人： Tomoko Yonemura , Hirofumi Muratani , Yoshikazu Hanatani
IPC分类号： G06F17/11 , H04L9/30 , G06F7/72
CPC分类号： G06F17/11 , G06F7/724 , H04L9/3093
摘要： According to an embodiment, a computing device includes a receiving unit, a calculating unit, a solving unit, a selecting unit, and a determining unit. The receiving unit is configured to receive pieces of input data indicative of elements of a subgroup of a multiplicative group in a finite field and pieces of first additional data for identifying conjugates of the respective pieces of input data. The elements are represented by traces. The calculating unit is configured to calculate a coefficient of an equation based on the pieces of input data. The solving unit is configured to obtain solutions of the equation. The selecting unit is configured to select one of the solutions as a result of computation, based on the first additional data. The determining unit is configured to determine second additional data for identifying a conjugate of the selected result of computation based on the first additional data.
摘要翻译：根据实施例，计算设备包括接收单元，计算单元，求解单元，选择单元和确定单元。接收单元被配置为接收指示有限域中的乘法组的子组的元素的输入数据片段和用于识别各段输入数据的共轭的第一附加数据。元素由痕迹表示。计算单元被配置为基于输入数据计算方程式的系数。求解单元被配置为获得等式的解。所述选择单元被配置为基于所述第一附加数据，作为计算的结果来选择所述解决方案之一。确定单元被配置为基于第一附加数据确定用于识别所选择的计算结果的共轭的第二附加数据。

14. 发明申请

US20060104477A1 Digital watermark detection apparatus and digital watermark detection method 审中-公开
标题翻译：数字水印检测装置及数字水印检测方法
公开(公告)号：US20060104477A1
公开(公告)日：2006-05-18
申请号：US11231513
申请日：2005-09-20
申请人： Taichi Isogai , Hirofumi Muratani
发明人： Taichi Isogai , Hirofumi Muratani
IPC分类号： G06K9/00
CPC分类号： G06T1/0078 , G06T2201/0051 , G06T2201/0061 , H04N1/32208 , H04N1/32229 , H04N1/32251 , H04N1/3232 , H04N1/32341
摘要： A digital watermark detecting apparatus includes an acquisition unit configured to acquire a plurality of base values for computation of a watermark value, which are contained, respectively, in all or some of a plurality of divided regions obtained by dividing digital contents, a computation unit configured to compute variance of the base values, and a determination unit configured to determine whether the digital watermark is contained in the digital contents, based on comparison of the computed variance with a threshold.
摘要翻译：一种电子水印检测装置，包括：获取单元，被配置为获取用于计算水印值的多个基值，所述基本值分别包含在通过划分数字内容而获得的多个分割区域的全部或部分中，计算单元配置以计算基本值的方差;以及确定单元，被配置为基于所计算的方差与阈值的比较来确定数字内容中是否包含数字水印。

15. 发明申请

US20090207999A1 DECRYPTION PROCESSING APPARATUS, SYSTEM, METHOD, AND COMPUTER PROGRAM PRODUCT 审中-公开
标题翻译： DECRYPTION PROCESSING APPARATUS，SYSTEM，METHOD，AND COMPUTER PROGRAM PRODUCT
公开(公告)号：US20090207999A1
公开(公告)日：2009-08-20
申请号：US12346265
申请日：2008-12-30
申请人： Tomoko Yonemura , Hirofumi Muratani
发明人： Tomoko Yonemura , Hirofumi Muratani
IPC分类号： H04L9/06 , G06F17/30
CPC分类号： H04L9/08 , H04L9/3013 , H04L2209/30
摘要： In a decryption processing apparatus, a decompression processing unit performs a map to pieces of compressed data included in a compressed encrypted data, thereby obtaining the pieces of the encrypted data having each of the pieces of the compressed data decompressed, the decompression map being a process of inputting the compressed data and either the final output data or the auxiliary output data and being a process of outputting the encrypted data and the auxiliary output data, a decryption processing unit performs a decryption process to each of the pieces of encrypted data, using a secret key corresponding to the public key, thereby obtaining the plain data, and a control unit controls parallel execution of the decompression process and the decryption process, and controls the decryption process performed by the decryption processing unit to the encrypted data output by the decompression processing unit, based on the decryption procedure.
摘要翻译：在解密处理装置中，解压缩处理单元对包含在压缩加密数据中的压缩数据执行映射，从而获得压缩数据中的每一个被解压缩的加密数据，解压缩映射是处理输入压缩数据和最终输出数据或辅助输出数据，并且作为输出加密数据和辅助输出数据的处理，解密处理单元对每一个加密数据执行解密处理，使用秘密密钥对应于公开密钥，从而获得明文数据，并且控制单元控制解压缩处理和解密处理的并行执行，并且将由解密处理单元执行的解密处理控制为通过解压缩处理输出的加密数据单位，基于解密程序。

16. 发明授权

US07305085B2 Encryption apparatus and method, and decryption apparatus and method based on block encryption 有权
标题翻译：加密装置和方法，以及基于块加密的解密装置和方法
公开(公告)号：US07305085B2
公开(公告)日：2007-12-04
申请号：US09893785
申请日：2001-06-29
申请人： Kenji Ohkuma , Fumihiko Sano , Hirofumi Muratani , Shinichi Kawamura
发明人： Kenji Ohkuma , Fumihiko Sano , Hirofumi Muratani , Shinichi Kawamura
IPC分类号： H04L9/28 , H04L9/06 , H04K1/00
CPC分类号： H04L9/002 , H04L9/0631 , H04L2209/08 , H04L2209/12 , H04L2209/24
摘要： In each stage, multiple parallel nonlinear transformation modules each perform local lower-level diffusion, then a diffusion module performs higher-level diffusion over the block width and multiple parallel nonlinear transformation modules each perform local lower-level diffusion. This operation is repeated a predetermined number of times corresponding to the number of stages. Each nonlinear transformation module is formed into the nested SPN structure by arranging alternately nonlinear transformation modules and a diffusion module. The diffusion module performs linear transformation for spreading the state of at least one bit in input data to the preceding nonlinear transformation modules to at least one bit in input data to the succeeding nonlinear transformation modules.
摘要翻译：在每个阶段，多个并行非线性变换模块各自执行局部较低级别的扩散，然后扩散模块在块宽度上执行更高级别的扩散，并且多个并行非线性变换模块各自执行局部较低级别的扩散。该操作重复与阶段数相对应的预定次数。每个非线性变换模块通过交替排列非线性变换模块和扩散模块形成嵌套SPN结构。扩散模块执行线性变换，以将输入数据中的至少一位的状态扩展到先前的非线性变换模块，以将输入数据中的至少一位扩展到随后的非线性变换模块。

17. 发明授权

US07227948B2 Encryption apparatus and method, and decryption apparatus and method based on block encryption 有权
公开(公告)号：US07227948B2
公开(公告)日：2007-06-05
申请号：US09799028
申请日：2001-03-06
申请人： Kenji Ohkuma , Hirofumi Muratani , Shinichi Kawamura , Fumihiko Sano
发明人： Kenji Ohkuma , Hirofumi Muratani , Shinichi Kawamura , Fumihiko Sano
IPC分类号： H04K1/00 , H04L9/00
CPC分类号： H04L9/0631 , H04L9/0625 , H04L2209/08 , H04L2209/12 , H04L2209/24
摘要： An encryption apparatus for block data, comprises a first processing unit randomizing the block data in units of first portions obtained by dividing the block data, and a second processing unit diffusing the block data output from the first processing unit with respect to a second portion of the block data which is wider than the first portion. The first processing unit comprises first nonlinear processing units nonlinearly transforming the block data in units of the first portions. The second processing unit comprises a first linear diffusion processing unit linearly diffusing the second portion of the block data. At least one of the first nonlinear processing units comprises second nonlinear processing units nonlinearly transforming the block data in units of the first portions, and a second linear diffusion processing unit linearly diffusing the second portion of the block data.

18. 发明授权

US07209556B2 Encryption apparatus and method, and decryption apparatus and method based on block encryption 有权
标题翻译：加密装置和方法，以及基于块加密的解密装置和方法
公开(公告)号：US07209556B2
公开(公告)日：2007-04-24
申请号：US11261562
申请日：2005-10-31
申请人： Kenji Ohkuma , Hirofumi Muratani , Shinichi Kawamura , Fumihiko Sano
发明人： Kenji Ohkuma , Hirofumi Muratani , Shinichi Kawamura , Fumihiko Sano
IPC分类号： H04K1/04 , H04L9/00 , H04L9/28
CPC分类号： H04L9/0631 , H04L9/0625 , H04L2209/08 , H04L2209/12 , H04L2209/24
摘要： An encryption apparatus for block data, comprises a first processing unit randomizing the block data in units of first portions obtained by dividing the block data, and a second processing unit diffusing the block data output from the first processing unit with respect to a second portion of the block data which is wider than the first portion. The first processing unit comprises first nonlinear processing units nonlinearly transforming the block data in units of the first portions. The second processing unit comprises a first linear diffusion processing unit linearly diffusing the second portion of the block data. At least one of the first nonlinear processing units comprises second nonlinear processing units nonlinearly transforming the block data in units of the first portions, and a second linear diffusion processing unit linearly diffusing the second portion of the block data.
摘要翻译：一种用于块数据的加密装置，包括：第一处理单元，以通过划分块数据获得的第一部分为单位随机化块数据;以及第二处理单元，对从第一处理单元输出的块数据相对于块数据比第一部分宽。第一处理单元包括以第一部分为单位非线性地变换块数据的第一非线性处理单元。第二处理单元包括线性扩散块数据的第二部分的第一线性扩散处理单元。第一非线性处理单元中的至少一个包括第二非线性处理单元，以第一部分为单位非线性地变换块数据;以及第二线性扩散处理单元，线性扩散块数据的第二部分。

19. 发明授权

US07194090B2 Encryption apparatus, decryption apparatus, expanded key generating apparatus and method therefor, and recording medium 有权
标题翻译：加密装置，解密装置，扩展密钥生成装置及其方法以及记录介质
公开(公告)号：US07194090B2
公开(公告)日：2007-03-20
申请号：US09902696
申请日：2001-07-12
申请人： Hirofumi Muratani , Masahiko Motoyama , Kenji Ohkuma , Fumihiko Sano , Shinichi Kawamura
发明人： Hirofumi Muratani , Masahiko Motoyama , Kenji Ohkuma , Fumihiko Sano , Shinichi Kawamura
IPC分类号： H04K1/00 , H04L9/00
CPC分类号： H04L9/002 , H04L9/0618 , H04L2209/08 , H04L2209/125 , H04L2209/20 , H04L2209/24
摘要： Expanded key schedule circuit for common key encryption system in which expanded keys are used in a predetermined order in data randomizing process for encryption and in a reversed order in data randomizing process for decryption, comprises round processing circuits connected in series. The round processing circuits subject the common key or sub key of a previous stage to a round function to output a sub key. The sub key of the last stage is equal to the common key. The expanded keys are generated from the sub keys.
摘要翻译：用于通用密钥加密系统的扩展密钥调度电路，其中扩展密钥以用于加密的数据随机化处理中的预定顺序以及用于解密的数据随机化处理中的相反顺序使用，包括串联连接的圆形处理电路。圆处理电路将前一级的公共密钥或子密钥实施为循环函数以输出子密钥。最后一级的子键等于公共密钥。扩展的密钥是从子密钥生成的。

20. 发明申请

US20070058805A1 ENCRYPTION APPARATUS AND METHOD, AND DECRYPTION APPARATUS AND METHOD BASED ON BLOCK ENCRYPTION 有权
标题翻译：加密装置和方法以及基于块加密的分解装置和方法
公开(公告)号：US20070058805A1
公开(公告)日：2007-03-15
申请号：US11261562
申请日：2005-10-31
申请人： Kenji Ohkuma , Hirofumi Muratani , Shinichi Kawamura , Fumihiko Sano
发明人： Kenji Ohkuma , Hirofumi Muratani , Shinichi Kawamura , Fumihiko Sano
IPC分类号： H04K1/06
CPC分类号： H04L9/0631 , H04L9/0625 , H04L2209/08 , H04L2209/12 , H04L2209/24
摘要： An encryption apparatus for block data, comprises a first processing unit randomizing the block data in units of first portions obtained by dividing the block data, and a second processing unit diffusing the block data output from the first processing unit with respect to a second portion of the block data which is wider than the first portion. The first processing unit comprises first nonlinear processing units nonlinearly transforming the block data in units of the first portions. The second processing unit comprises a first linear diffusion processing unit linearly diffusing the second portion of the block data. At least one of the first nonlinear processing units comprises second nonlinear processing units nonlinearly transforming the block data in units of the first portions, and a second linear diffusion processing unit linearly diffusing the second portion of the block data.
摘要翻译：一种用于块数据的加密装置，包括：第一处理单元，以通过划分块数据获得的第一部分为单位随机化块数据;以及第二处理单元，对从第一处理单元输出的块数据相对于块数据比第一部分宽。第一处理单元包括以第一部分为单位非线性地变换块数据的第一非线性处理单元。第二处理单元包括线性扩散块数据的第二部分的第一线性扩散处理单元。第一非线性处理单元中的至少一个包括第二非线性处理单元，以第一部分为单位非线性地变换块数据;以及第二线性扩散处理单元，线性扩散块数据的第二部分。

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