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1. 发明授权

US09037623B2 Proxy calculation system, proxy calculation method, proxy calculation requesting apparatus, and proxy calculation program and recording medium therefor 有权
标题翻译：代理计算系统，代理计算方法，代理计算请求装置，代理计算程序及其记录介质
公开(公告)号：US09037623B2
公开(公告)日：2015-05-19
申请号：US13520491
申请日：2011-01-11
申请人： Go Yamamoto , Tetsutaro Kobayashi
发明人： Go Yamamoto , Tetsutaro Kobayashi
IPC分类号： G06F7/58 , H04L9/30 , H04L9/22
CPC分类号： H04L9/30 , H04L9/008 , H04L9/3066 , H04L2209/46 , H04L2209/76
摘要： A function f(x) is calculated with a calculating apparatus that makes a correct calculation with a low probability. Provided that G and H are cyclic groups, f is a function that maps an element x of the group H into the group G, X1 and X2 are random variables whose values are elements of the group G, x1 is a realized value of the random variable X1, and x2 is a realized value of the random variable X2, an integer calculation part calculates integers a′ and b′ that satisfy a relation a′a+b′b=1 using two natural numbers a and b that are relatively prime. A first randomizable sampler is capable of calculating f(x)bx1 and designates the calculation result as u. A first exponentiation part calculates u′=ua. A second randomizable sampler is capable of calculating f(x)ax2 and designates the calculation result as v. A second exponentiation part calculates v′=vb. A determining part determines whether u′=v′ or not. A final calculation part calculates ub′va′ in a case where it is determined that u′=v′.
摘要翻译：使用低概率进行正确计算的计算装置计算函数f（x）。假设G和H是循环组，f是将组H的元素x映射到组G中的函数，X1和X2是其值是组G的元素的随机变量，x1是随机的实现值变量X1和x2是随机变量X2的实现值，整数计算部分使用相对于素数的两个自然数a和b来计算满足关系a'a + b'b = 1的整数a'和b' 。第一个可随机采样器能够计算f（x）bx1并将计算结果指定为u。第一求幂部分计算u'= ua。第二个可随机采样器能够计算f（x）ax2并将计算结果指定为v。第二求幂部分计算v'= vb。确定部分是否确定u'= v'。在确定u'= v'的情况下，最终计算部分计算ub'va'。

2. 发明授权

US08938068B2 Functional encryption applied system, information output apparatus, information processing apparatus, encryption protocol execution method, information output method, information processing method, program and recording medium 有权
标题翻译：功能加密应用系统，信息输出装置，信息处理装置，加密协议执行方法，信息输出方法，信息处理方法，程序和记录介质
公开(公告)号：US08938068B2
公开(公告)日：2015-01-20
申请号：US13387764
申请日：2010-07-30
申请人： Tetsutaro Kobayashi , Koutarou Suzuki
发明人： Tetsutaro Kobayashi , Koutarou Suzuki
IPC分类号： H04L9/28 , H04L9/30 , H04L9/08
CPC分类号： H04L9/3073 , H04L9/0847
摘要： An information output apparatus identifies, according to a rule established for each of functional encryption protocols or a rule established for each combination of the protocols, one or more identifiers corresponding to a particular functional encryption protocol or a combination of the particular protocols, sets a particular piece of first correspondence information corresponding to the identifier or identifiers, and outputs first information which is a ciphertext or key information of the functional encryption scheme that corresponds to the particular piece of first correspondence information. An information processing apparatus inputs the first information and second information which is key information or a ciphertext of the functional encryption scheme that corresponds to a particular piece of second correspondence information into a decryption function of the functional encryption scheme and, when the truth value of a logical formula corresponding to the combination of the particular piece of first correspondence information corresponding to the first information and the particular piece of second correspondence information corresponding to the second information is true, generates a decryption result.
摘要翻译：信息输出装置根据为每个功能加密协议建立的规则或为协议的每个组合建立的规则来识别与特定功能加密协议相对应的一个或多个标识符或特定协议的组合，输出与标识符或标识符相对应的第一对应信息，并且输出作为与特定第一对应信息对应的功能加密方案的密文或密钥信息的第一信息。信息处理装置将与特定第二对应信息对应的功能加密方案的密钥信息或密文的第一信息和第二信息输入到功能加密方案的解密函数中，并且当真值对应于与第一信息对应的特定第一对应信息的组合与对应于第二信息的特定第二对应信息的组合相对应的逻辑公式为真，生成解密结果。

3. 发明申请

US20120033805A1 FINITE FIELD CALCULATION APPARATUS, FINITE FILED CALCULATION METHOD, PROGRAM, AND RECORDING MEDIUM 有权
标题翻译：有限位计算设备，有限填充计算方法，程序和记录介质
公开(公告)号：US20120033805A1
公开(公告)日：2012-02-09
申请号：US13258840
申请日：2010-04-23
申请人： Gen Takahashi , Tetsutaro Kobayashi , Kaku Takeuchi
发明人： Gen Takahashi , Tetsutaro Kobayashi , Kaku Takeuchi
IPC分类号： H04L9/28
CPC分类号： H04L9/3073 , G06F7/724 , G06F2207/7209 , H04L9/3093
摘要： A calculation Πi=0N−1e(R(i, 0), . . . , R(i, K−1)) where a calculation of K elements R(i, k)∈GF(pm) of a finite field GF(pm) over a finite field is expressed as e(R(i, 0), . . . , R(i, K−1)) is efficiently performed. Polynomials poly(R(i, 0), . . . , R(i, K−1)) that express a d-th-order extension field of the finite field GF(pm), which are obtained by the calculations e(R(i, 0), . . . , R(i, K−1)) for different values of i, are multiplied by each other, and a cumulative multiplication of the products is performed, for example. The polynomial poly(R(i, 0), . . . , R(i, K−1)) is a mapping from the input elements of the finite field GF(pm), and the coefficients of at least some of the terms thereof are 0. The same process is performed for different sets of values of i, and the calculation Πi=0N−1e(R(i, 0), . . . , R(i, K−1)) is performed using the result.
摘要翻译：计算＆Pgr; i = 0N-1e（R（i，0），...，R（i，K-1））其中有限元的K个元素R（i，k）∈GF（pm）在有限域上的场GF（pm）被表示为e（R（i，0），...，R（i，K-1））。表示有限域GF（pm）的d阶扩展场的多项式poly（R（i，0），...，R（i，K-1）），其通过计算得到例如，对于i的不同值的R（i，0），...，R（i，K-1））彼此相乘，并且执行乘积的累积乘法。多项式poly（R（i，0），...，R（i，K-1））是从有限域GF（pm）的输入元素的映射，以及至少一些术语的系数对于不同的i值集合执行相同的处理，并且执行计算＆Pgr; i = 0N-1e（R（i，0），...，R（i，K-1））使用结果。

4. 发明申请

US20120027210A1 CRYPTOGRAPHIC SYSTEM, CRYPTOGRAPHIC COMMUNICATION METHOD, ENCRYPTION APPARATUS, KEY GENERATION APPARATUS, DECRYPTION APPARATUS, CONTENT SERVER, PROGRAM, AND STORAGE MEDIUM 有权
标题翻译： CRYPTOGRAPHIC系统，CRYPTOGRAPHIC通信方法，加密设备，主要生成设备，分解设备，内容服务器，程序和存储介质
公开(公告)号：US20120027210A1
公开(公告)日：2012-02-02
申请号：US13258187
申请日：2010-04-23
申请人： Kaku Takeuchi , Tetsutaro Kobayashi , Sakae Chikara
发明人： Kaku Takeuchi , Tetsutaro Kobayashi , Sakae Chikara
IPC分类号： H04L9/30
CPC分类号： H04L9/3073 , H04L9/0861 , H04L9/3093 , H04L9/3263
摘要： A cryptographic communication technology that is based on predicate encryption and that can operate flexibly is provided. A conversion rule information pair is determined in advance, which has attribute conversion rule information prescribing a conversion rule for converting attribute designation information to attribute information used in a predicate encryption algorithm and predicate conversion rule information prescribing a conversion rule for converting predicate designation information to predicate information used in the predicate encryption algorithm. One kind of conversion rule information included in the conversion rule information pair is used to obtain first attribute information or first predicate information from input information. The first attribute information or the first predicate information is used for encryption. Encryption information is decrypted with a decryption key generated by using second attribute information or second predicate information obtained from user information by using the other kind of conversion rule information.
摘要翻译：提供了基于谓词加密并且可以灵活操作的加密通信技术。确定转换规则信息对，其具有规定用于将属性指定信息转换为在谓词加密算法中使用的属性信息的转换规则的属性转换规则信息，以及规定用于将谓词指定信息转换为谓词的转换规则的谓词转换规则信息谓词加密算法中使用的信息。包括在转换规则信息对中的一种转换规则信息用于从输入信息获得第一属性信息或第一谓词信息。第一属性信息或第一谓词信息用于加密。使用通过使用另一种转换规则信息通过使用从用户信息获得的第二属性信息或第二谓词信息生成的解密密钥对加密信息进行解密。

5. 发明授权

US09607158B2 Proxy computing system, computing apparatus, capability providing apparatus, proxy computing method, capability providing method, program, and recording medium 有权
公开(公告)号：US09607158B2
公开(公告)日：2017-03-28
申请号：US13881111
申请日：2011-10-25
申请人： Go Yamamoto , Tetsutaro Kobayashi
发明人： Go Yamamoto , Tetsutaro Kobayashi
IPC分类号： G06F21/60 , H04L9/00 , H04L9/30
CPC分类号： H04L9/0618 , G06F21/602 , H04L9/006 , H04L9/008 , H04L9/14 , H04L9/3013 , H04L9/3073 , H04L2209/08 , H04L2209/76
摘要： A computing apparatus outputs τ1 and τ2 corresponding to a ciphertext x, a capability providing apparatus uses τ1 to correctly compute f(τ1) with a probability greater than a certain probability and sets the result of the computation as z1, uses τ2 to correctly compute f(τ2) with a probability greater than a certain probability and sets the result of the computation as z2, the computing apparatus generates a computation result u=f(x)bx1 from z1, generates a computation result v=f(x)ax2 from z2, and outputs ub′va′ if the computation results u and v satisfy a particular relation, where G and H are groups, f(x) is a function for obtaining an element of the group G for xεH, X1 and X2 are random variables having values in the group G, x1 is a realization of the random variable X1, and x2 is a realization of the random variable X2.

6. 发明授权

US08964982B2 Cryptographic system, cryptographic communication method, encryption apparatus, key generation apparatus, decryption apparatus, content server, program, and storage medium 有权
标题翻译：密码系统，密码通信方式，加密装置，密钥生成装置，解密装置，内容服务器，程序和存储介质
公开(公告)号：US08964982B2
公开(公告)日：2015-02-24
申请号：US13258187
申请日：2010-04-23
申请人： Kaku Takeuchi , Tetsutaro Kobayashi , Sakae Chikara
发明人： Kaku Takeuchi , Tetsutaro Kobayashi , Sakae Chikara
IPC分类号： H04K1/00 , H04L9/00 , H04L9/30 , H04L9/08 , H04L9/32
CPC分类号： H04L9/3073 , H04L9/0861 , H04L9/3093 , H04L9/3263
摘要： A cryptographic communication technology that is based on predicate encryption and that can operate flexibly is provided. A conversion rule information pair is determined in advance, which has attribute conversion rule information prescribing a conversion rule for converting attribute designation information to attribute information used in a predicate encryption algorithm and predicate conversion rule information prescribing a conversion rule for converting predicate designation information to predicate information used in the predicate encryption algorithm. One kind of conversion rule information included in the conversion rule information pair is used to obtain first attribute information or first predicate information from input information. The first attribute information or the first predicate information is used for encryption. Encryption information is decrypted with a decryption key generated by using second attribute information or second predicate information obtained from user information by using the other kind of conversion rule information.
摘要翻译：提供了基于谓词加密并且可以灵活操作的加密通信技术。确定转换规则信息对，其具有规定用于将属性指定信息转换为在谓词加密算法中使用的属性信息的转换规则的属性转换规则信息，以及规定用于将谓词指定信息转换为谓词的转换规则的谓词转换规则信息谓词加密算法中使用的信息。包括在转换规则信息对中的一种转换规则信息用于从输入信息获得第一属性信息或第一谓词信息。第一属性信息或第一谓词信息用于加密。使用通过使用另一种转换规则信息通过使用从用户信息获得的第二属性信息或第二谓词信息生成的解密密钥对加密信息进行解密。

7. 发明申请

US20130114810A1 CRYPTOGRAPHIC SYSTEM, CRYPTOGRAPHIC COMMUNICATION METHOD, ENCRYPTION APPARATUS, KEY GENERATION APPARATUS, DECRYPTION APPARATUS, CONTENT SERVER, PROGRAM, AND STORAGE MEDIUM 有权
标题翻译： CRYPTOGRAPHIC系统，CRYPTOGRAPHIC通信方法，加密设备，主要生成设备，分解设备，内容服务器，程序和存储介质
公开(公告)号：US20130114810A1
公开(公告)日：2013-05-09
申请号：US13810797
申请日：2011-07-22
申请人： Tetsutaro Kobayashi , Kaku Takeuchi , Sakae Chikara
发明人： Tetsutaro Kobayashi , Kaku Takeuchi , Sakae Chikara
IPC分类号： H04L9/14
CPC分类号： H04L9/14 , H04L9/0836 , H04L9/0847 , H04L9/085 , H04L9/0861 , H04L9/3073
摘要： A cryptographic communication technology that is based on functional encryption and that can operate flexibly is provided. A conversion rule information pair is determined in advance, which has attribute conversion rule information prescribing a conversion rule for converting attribute designation information to attribute information used in a functional encryption algorithm and logical expression conversion rule information prescribing a conversion rule for converting logical expression designation information to logic information used in the functional encryption algorithm. One kind of conversion rule information included in the conversion rule information pair is used to obtain first attribute information or first logic information from input information. The first attribute information or the first logic information is used for encryption. Encryption information is decrypted with a decryption key generated by using second attribute information or second logic information obtained from user information by using the other kind of conversion rule information.
摘要翻译：提供了基于功能加密并且可以灵活操作的加密通信技术。确定转换规则信息对，其具有规定用于将属性指定信息转换为功能加密算法中使用的属性信息的转换规则的属性转换规则信息，以及规定用于转换逻辑表达式指定信息的转换规则的逻辑表达式转换规则信息到功能加密算法中使用的逻辑信息。包括在转换规则信息对中的一种转换规则信息用于从输入信息获得第一属性信息或第一逻辑信息。第一属性信息或第一逻辑信息用于加密。使用通过使用另一种转换规则信息通过使用从用户信息获得的第二属性信息或第二逻辑信息生成的解密密钥对加密信息进行解密。

8. 发明授权

US08995660B2 Cryptographic system, cryptographic communication method, encryption apparatus, key generation apparatus, decryption apparatus, content server, program, and storage medium 有权
标题翻译：密码系统，密码通信方式，加密装置，密钥生成装置，解密装置，内容服务器，程序和存储介质
公开(公告)号：US08995660B2
公开(公告)日：2015-03-31
申请号：US13810797
申请日：2011-07-22
申请人： Tetsutaro Kobayashi , Kaku Takeuchi , Sakae Chikara
发明人： Tetsutaro Kobayashi , Kaku Takeuchi , Sakae Chikara
IPC分类号： H04L9/00 , H04L9/14 , H04L9/08 , H04L9/30
CPC分类号： H04L9/14 , H04L9/0836 , H04L9/0847 , H04L9/085 , H04L9/0861 , H04L9/3073
摘要： A cryptographic communication technology that is based on functional encryption and that can operate flexibly is provided. A conversion rule information pair is determined in advance, which has attribute conversion rule information prescribing a conversion rule for converting attribute designation information to attribute information used in a functional encryption algorithm and logical expression conversion rule information prescribing a conversion rule for converting logical expression designation information to logic information used in the functional encryption algorithm. One kind of conversion rule information included in the conversion rule information pair is used to obtain first attribute information or first logic information from input information. The first attribute information or the first logic information is used for encryption. Encryption information is decrypted with a decryption key generated by using second attribute information or second logic information obtained from user information by using the other kind of conversion rule information.
摘要翻译：提供了基于功能加密并且可以灵活操作的加密通信技术。确定转换规则信息对，其具有规定用于将属性指定信息转换为功能加密算法中使用的属性信息的转换规则的属性转换规则信息，以及规定用于转换逻辑表达式指定信息的转换规则的逻辑表达式转换规则信息到功能加密算法中使用的逻辑信息。包括在转换规则信息对中的一种转换规则信息用于从输入信息获得第一属性信息或第一逻辑信息。第一属性信息或第一逻辑信息用于加密。使用通过使用另一种转换规则信息通过使用从用户信息获得的第二属性信息或第二逻辑信息生成的解密密钥对加密信息进行解密。

9. 发明申请

US20130318360A1 PROXY COMPUTING SYSTEM, COMPUTING APPARATUS, CAPABILITY PROVIDING APPARATUS, PROXY COMPUTING METHOD, CAPABILITY PROVIDING METHOD, PROGRAM, AND RECORDING MEDIUM 有权
标题翻译：代理计算系统，计算机，能力提供设备，代理计算方法，能力提供方法，程序和记录介质
公开(公告)号：US20130318360A1
公开(公告)日：2013-11-28
申请号：US13881111
申请日：2011-10-25
申请人： Go Yamamoto , Tetsutaro Kobayashi
发明人： Go Yamamoto , Tetsutaro Kobayashi
IPC分类号： G06F21/60
CPC分类号： H04L9/0618 , G06F21/602 , H04L9/006 , H04L9/008 , H04L9/14 , H04L9/3013 , H04L9/3073 , H04L2209/08 , H04L2209/76
摘要： A computing apparatus outputs τ1 and τ2 corresponding to a ciphertext x, a capability providing apparatus uses τ1 to correctly compute f(τ1) with a probability greater than a certain probability and sets the result of the computation as z1, uses τ2 to correctly compute f(τ2) with a probability greater than a certain probability and sets the result of the computation as z2, the computing apparatus generates a computation result u=f(x)bx1 from z1, generates a computation result v=f(x)ax2 from z2, and outputs ub′va′ if the computation results u and v satisfy a particular relation, where G and H are groups, f(x) is a function for obtaining an element of the group G for xεH, X1 and X2 are random variables having values in the group G, x1 is a realization of the random variable X1, and x2 is a realization of the random variable X2.
摘要翻译：计算装置输出对应于密文x的tau1和tau2，能力提供装置使用tau1以大于某一概率的概率正确计算f（τ1），并将计算结果设置为z1，使用tau2正确地计算f （τ2），其计算结果设定为z2，计算装置从z1生成计算结果u = f（x）bx1，生成计算结果v = f（x）ax2，从 z2，并且如果计算结果u和v满足特定关系，则输出ub'va'，其中G和H是组，f（x）是用于获得用于xepsilon的组G的元素的函数，X 1和X 2是随机的具有组G，x1中的值的变量是随机变量X1的实现，x2是随机变量X2的实现。

10. 发明授权

US06795553B1 Method and apparatus for modular inversion for information security and recording medium with a program for implementing the method 有权
标题翻译：用于信息安全和记录介质的模块化反演的方法和装置，具有用于实现该方法的程序
公开(公告)号：US06795553B1
公开(公告)日：2004-09-21
申请号：US09185626
申请日：1998-11-04
申请人： Tetsutaro Kobayashi , Hikaru Morita
发明人： Tetsutaro Kobayashi , Hikaru Morita
IPC分类号： H04L928
CPC分类号： G06F7/728
摘要： Values X and N of n bits and a parameter t are input, then Y=X2−t mod N is calculated, then an extended binary GCD algorithm is executed for Y to obtain S=y−12k mod N and k, and R=S2−(k+t−2n) is calculated for S, thereby obtaining a Montgomery inverse R=X−I22n mod N of X on a residue class ring Z/NZ.
摘要翻译：输入n位和参数t的值X和N，然后计算Y = X2 <-t> mod N，然后对Y执行扩展二进制GCD算法以获得S = y <2> 对于S，对于S N和k，并且R = S2 < - （k + t-2n）>，从而获得残留类别Z上的X的蒙哥马利反R = X 1 -I 2 / NZ。

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