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21. 发明授权

US08433913B2 Apparatus, method, and program for digital signature 有权
标题翻译：数字签名的装置，方法和程序
公开(公告)号：US08433913B2
公开(公告)日：2013-04-30
申请号：US12645469
申请日：2009-12-22
申请人： Masahiko Takenaka , Tetsuya Izu
发明人： Masahiko Takenaka , Tetsuya Izu
IPC分类号： H04L9/32
CPC分类号： H04L9/3236 , H04L9/3247
摘要： A digital signature method to generate a signature for an electronic document, the method including: initializing a signature t of each of the document segments of electronic document and twice raising the signature t to the power of a hash value of each of the document segments and digitally signing the raised signature to produce a signature s serving as the signature of the electronic document; and revising a document segment; wherein, in the revising, to delete a document segment, the signature t is raised twice to the power of the hash value of the document segment unless the document segment is sanitization prohibited, or the signature t is raised to the power of the hash value of the document if the document segment is sanitization prohibited, and the document segment is deleted; to sanitize a document segment, the document segment is replaced with the hash value thereof.
摘要翻译：一种用于生成电子文档的签名的数字签名方法，所述方法包括：初始化电子文档的每个文档段的签名t，并将签名t两次提升为每个文档段的哈希值的权力，以及对提出的签名进行数字签名，以生成作为电子文件签名的签名; 并修改文件段; 其中，在修改中，为了删除文档片段，将签名t提高到文档片段的散列值的两倍，除非文档片段被禁止消毒，或者将签名t提高到散列值的幂如果文件段被禁用，文件段被删除; 为了对文档段进行清理，文档段被替换为其散列值。

22. 发明申请

US20060093137A1 Elliptic curve cryptosystem apparatus, elliptic curve cryptosystem method, elliptic curve cryptosystem program and computer readable recording medium storing the elliptic curve cryptosystem program 有权
标题翻译：椭圆曲线密码系统装置，椭圆曲线密码系统方法，椭圆曲线密码系统程序和存储椭圆曲线密码系统程序的计算机可读记录介质
公开(公告)号：US20060093137A1
公开(公告)日：2006-05-04
申请号：US11311590
申请日：2005-12-16
申请人： Tetsuya Izu , Kouichi Itoh , Masahiko Takenaka , Naoya Torii
发明人： Tetsuya Izu , Kouichi Itoh , Masahiko Takenaka , Naoya Torii
IPC分类号： H04L9/30
CPC分类号： G06F7/725 , G06F2207/7223 , G06F2207/7228 , H04L9/003 , H04L9/3066 , H04L2209/08
摘要： An elliptic curve cryptosystem apparatus performing an elliptic curve cryptosystem process has a coordinate transforming unit for transforming coordinates (X:Y:Z) on a point P on an elliptic curve over a finite field GF(pˆm) to coordinates (r1×(X−s1):r2×(Y−s2):r3×(Z−s3)) (where, p is a prime number, m is an integer not less than 1, r1, r2 and r3 are integers not less than 1 and not larger than (p−1), s1, s2 and s3 are integer not less than 0 and not larger than (p−1), and a code “ˆ” represents power), and a scalar multiplication operating unit for performing scalar multiplication on the point on the elliptic curve transformed by the coordinate transforming unit, wherein at least one of the parameters s1, s2 and s3 has a value other than 0. The apparatus can perform the scalar multiplication in the elliptic curve cryptosystem, with resistance to side channel attacks.
摘要翻译：执行椭圆曲线密码系统处理的椭圆曲线密码系统装置具有坐标变换单元，用于将有限域GF（pm）上的椭圆曲线上的点P上的坐标（X：Y：Z）变换为坐标（r1x（X-s1 ）：r2x（Y-s2）：r3x（Z-s3））（其中，p是质数，m是不小于1的整数，r1，r2和r3是不小于1且不大于 p-1），s1，s2和s3是不小于0且不大于（p-1）的整数，代码“”表示功率），以及标量乘法运算单元，用于对该点上的点进行标量乘法由坐标变换单元变换的椭圆曲线，其中，参数s1，s2和s3中的至少一个具有不同于0的值。该装置可以执行椭圆曲线密码系统中具有抗侧信道攻击的标量乘法。

23. 发明申请

US20050152541A1 Tamper-proof elliptic encryption with private key 有权
标题翻译：具有私钥的防篡改椭圆加密
公开(公告)号：US20050152541A1
公开(公告)日：2005-07-14
申请号：US11045111
申请日：2005-01-31
申请人： Masahiko Takenaka , Tetsuya Izu , Kouichi Itoh , Naoya Torii
发明人： Masahiko Takenaka , Tetsuya Izu , Kouichi Itoh , Naoya Torii
IPC分类号： G06F7/72 , G09C1/00 , H04K1/00 , H04L9/30
CPC分类号： G06F7/725 , G06F2207/7223
摘要： An encryption device (FIG. 15) performs elliptic curve encryption using a secret key. The encryption device includes: operation means (ECDBL, ECADD) for performing scalar multiplication of a point on an elliptic curve; storage (T[0]-T[2]) having a plurality of data storing areas; and means (SEL) for determining, in accordance with a bit sequence of a given value (d) and with a random value (RNG), an address of one of the plurality of data storage areas that is to be coupled to the operation means for each scalar multiplication.
摘要翻译：使用秘密密钥进行加密装置（图15

24. 发明授权

US08433910B2 Electronic signature method, apparatus, and recording medium having electronic signature program recorded thereon 有权
标题翻译：具有记录在其上的电子签名程序的电子签名方法，装置和记录介质
公开(公告)号：US08433910B2
公开(公告)日：2013-04-30
申请号：US12356845
申请日：2009-01-21
申请人： Masahiko Takenaka , Tetsuya Izu
发明人： Masahiko Takenaka , Tetsuya Izu
IPC分类号： H04L9/32
CPC分类号： H04L9/302 , H04L9/3249
摘要： A computer divides a target electronic document into a plurality of document segments. Then, the computer generates a signature (s, t) that includes a set of two values having a signature value s forming a signature on the electronic document and a deletion signature value t used for deletion, the signature value s which serves as a body of the signature being formed by a superposition of signature information on the individual document segments. Then, in a case where one of the plurality of document segments obtained by the division is to be extracted, the computer superimposes deletion information of a document segment to be deleted on the deletion signature value t to generate a new signature value t′, and produces an updated signature (s, t′).
摘要翻译：计算机将目标电子文档划分成多个文档段。然后，计算机生成包括具有在电子文档上形成签名的签名值s和用于删除的删除签名值t的两组值的签名（s，t），用作主体的签名值s 的签名是通过在各个文档段上叠加签名信息而形成的。然后，在提取通过划分获得的多个文档段中的一个的情况下，计算机将要删除的文档段的删除信息叠加在删除签名值t上以生成新的签名值t'，并且产生更新的签名（s，t'）。

25. 发明授权

US08335922B2 Recording medium, digital information verification apparatus, and digital information verification method 有权
标题翻译：记录介质，数字信息验证装置和数字信息验证方法
公开(公告)号：US08335922B2
公开(公告)日：2012-12-18
申请号：US11882097
申请日：2007-07-30
申请人： Takashi Yoshioka , Masahiko Takenaka , Tetsuya Izu
发明人： Takashi Yoshioka , Masahiko Takenaka , Tetsuya Izu
IPC分类号： G06F21/00
CPC分类号： H04N1/32144 , H04N2201/3233
摘要： Certification/verification of authenticity and integrity of a digital document can be achieved, using meta information and content information and third-party certification thereof is achieved.A digital information verification program stored in a recording medium according to the present invention allows a computer to determine presence/absence of any change made to the digital information and identify the changed part by the following steps: generating the feature amount information with respect to the digital information to be verified and registering it in association with the digital document; in the case where any operation is made to the digital information, acquiring the feature amount information (meta information related parameters and content information related parameters) of the meta information and content information concerning the operation, the feature amount information including the same items (meta information and content information) as those of the feature amount information related to the digital information before being operated; and comparing the feature amount information before and after the operation.
摘要翻译：可以实现数字文档的真实性和完整性的认证/验证，使用元信息和内容信息以及第三方认证。存储在根据本发明的记录介质中的数字信息验证程序允许计算机确定对数字信息做出的任何改变的存在/不存在，并通过以下步骤识别改变的部分：生成相对于要与数字文件相关联的数字信息进行验证和注册; 在对数字信息进行任何操作的情况下，获取元信息的特征量信息（元信息相关参数和内容信息相关参数）和与操作有关的内容信息，包括相同项目的特征量信息（元信息和内容信息）作为与操作之前的数字信息相关的特征量信息的信息; 以及比较操作之前和之后的特征量信息。

26. 发明授权

US08037312B2 Method and apparatus for digital signature authentication, and computer product 有权
标题翻译：数字签名认证方法与设备，计算机产品
公开(公告)号：US08037312B2
公开(公告)日：2011-10-11
申请号：US11984314
申请日：2007-11-15
申请人： Masahiko Takenaka , Tetsuya Izu , Takashi Yoshioka
发明人： Masahiko Takenaka , Tetsuya Izu , Takashi Yoshioka
IPC分类号： H04L9/32
CPC分类号： H04L9/3236 , G06F21/6254 , G06F21/645 , G06F2221/2151 , H04L9/3247 , H04L2209/08 , H04L2209/42
摘要： An apparatus for digital signature authentication includes a dividing unit that divides streaming data into plural pieces of partial data in a predetermined unit; a first creating unit that creates a hash value string including plural hash values corresponding to the pieces of partial data; a second creating unit that creates a first binary tree using the hash value string; and a third creating unit that creates a digital signature of a signer using a root value of the first binary tree.
摘要翻译：一种用于数字签名认证的装置，包括一个分割单元，它将流数据分成预定单位的多个部分数据; 第一创建单元，其创建包括与所述部分数据对应的多个哈希值的散列值串; 第二创建单元，其使用所述散列值字符串来创建第一二进制树; 以及第三创建单元，其使用第一二叉树的根值创建签名者的数字签名。

27. 发明申请

US20090193256A1 ELECTRONIC SIGNATURE METHOD, APPARATUS, AND RECORDING MEDIUM HAVING ELECTRONIC SIGNATURE PROGRAM RECORDED THEREON 有权
标题翻译：具有记录的电子签名程序的电子签名方法，装置和记录介质
公开(公告)号：US20090193256A1
公开(公告)日：2009-07-30
申请号：US12356845
申请日：2009-01-21
申请人： Masahiko TAKENAKA , Tetsuya Izu
发明人： Masahiko TAKENAKA , Tetsuya Izu
IPC分类号： H04L9/32 , G06F7/60 , G06F7/06
CPC分类号： H04L9/302 , H04L9/3249
摘要： A computer divides a target electronic document into a plurality of document segments. Then, the computer generates a signature (s, t) that includes a set of two values having a signature value s forming a signature on the electronic document and a deletion signature value t used for deletion, the signature value s which serves as a body of the signature being formed by a superposition of signature information on the individual document segments. Then, in a case where one of the plurality of document segments obtained by the division is to be extracted, the computer superimposes deletion information of a document segment to be deleted on the deletion signature value t to generate a new signature value t′, and produces an updated signature (s, t′).
摘要翻译：计算机将目标电子文档划分成多个文档段。然后，计算机生成包括具有在电子文档上形成签名的签名值s和用于删除的删除签名值t的两组值的签名（s，t），用作主体的签名值s 的签名是通过在各个文档段上叠加签名信息而形成的。然后，在提取通过划分获得的多个文档段中的一个的情况下，计算机将要删除的文档段的删除信息叠加在删除签名值t上以生成新的签名值t'，并且产生更新的签名（s，t'）。

28. 发明授权

US07536011B2 Tamper-proof elliptic encryption with private key 有权
标题翻译：具有私钥的防篡改椭圆加密
公开(公告)号：US07536011B2
公开(公告)日：2009-05-19
申请号：US11045111
申请日：2005-01-31
申请人： Masahiko Takenaka , Tetsuya Izu , Kouichi Itoh , Naoya Torii
发明人： Masahiko Takenaka , Tetsuya Izu , Kouichi Itoh , Naoya Torii
IPC分类号： H04L9/00 , H04L9/28 , H04L9/30
CPC分类号： G06F7/725 , G06F2207/7223
摘要： An encryption device performs elliptic curve encryption using a secret key. The encryption device includes an operation unit for performing scalar multiplication of a point on an elliptic curve a storage unit having a plurality of data storing areas and a determiner unit for determining, in accordance with a bit sequence of a given value (d) and with a random value (RNG), an address of one of the plurality of data storage areas that is to be coupled to the operation means for each scalar multiplication.
摘要翻译：加密装置使用密钥执行椭圆曲线加密。加密装置包括用于执行椭圆曲线上的点的标量相乘的操作单元，具有多个数据存储区域的存储单元和确定单元，用于根据给定值（d）的位序列和与随机值（RNG），用于每个标量乘法的要耦合到操作装置的多个数据存储区域之一的地址。

29. 发明申请

US20080082829A1 Recording medium, digital information verification apparatus, and digital information verification method 有权
标题翻译：记录介质，数字信息验证装置和数字信息验证方法
公开(公告)号：US20080082829A1
公开(公告)日：2008-04-03
申请号：US11882097
申请日：2007-07-30
申请人： Takashi Yoshioka , Masahiko Takenaka , Tetsuya Izu
发明人： Takashi Yoshioka , Masahiko Takenaka , Tetsuya Izu
IPC分类号： H04L9/32
CPC分类号： H04N1/32144 , H04N2201/3233
摘要： Certification/verification of authenticity and integrity of a digital document can be achieved, using meta information and content information and third-party certification thereof is achieved.A digital information verification program stored in a recording medium according to the present invention allows a computer to determine presence/absence of any change made to the digital information and identify the changed part by the following steps: generating the feature amount information with respect to the digital information to be verified and registering it in association with the digital document; in the case where any operation is made to the digital information, acquiring the feature amount information (meta information related parameters and content information related parameters) of the meta information and content information concerning the operation, the feature amount information including the same items (meta information and content information) as those of the feature amount information related to the digital information before being operated; and comparing the feature amount information before and after the operation.
摘要翻译：可以实现数字文档的真实性和完整性的认证/验证，使用元信息和内容信息以及第三方认证。存储在根据本发明的记录介质中的数字信息验证程序允许计算机确定对数字信息做出的任何改变的存在/不存在，并通过以下步骤识别改变的部分：生成相对于要与数字文件相关联的数字信息进行验证和注册; 在对数字信息进行任何操作的情况下，获取元信息的特征量信息（元信息相关参数和内容信息相关参数）和与操作有关的内容信息，包括相同项目的特征量信息（元信息和内容信息）作为与操作之前的数字信息相关的特征量信息的信息; 以及比较操作之前和之后的特征量信息。

30. 发明申请

US20070177721A1 Tamper-proof elliptic encryption with private key 审中-公开
标题翻译：具有私钥的防篡改椭圆加密
公开(公告)号：US20070177721A1
公开(公告)日：2007-08-02
申请号：US11272916
申请日：2005-11-15
申请人： Kouichi Itoh , Tetsuya Izu , Masahiko Takenaka , Naoya Torii
发明人： Kouichi Itoh , Tetsuya Izu , Masahiko Takenaka , Naoya Torii
IPC分类号： H04L9/28
CPC分类号： G06F7/725 , G06F7/723 , G06F2207/7223 , G06F2207/7228 , G06F2207/7233 , G06F2207/7238 , G06F2207/7261 , H04L9/003 , H04L9/3066 , H04L2209/08 , H04L2209/127
摘要： An encryption device (10) for performing elliptic encryption processing with a private key, includes: randomizing means (16) for setting, into an initial elliptic point V0, an elliptic point R on an elliptic curve that is generated in accordance with a random value; operation means (20) for performing a first operation of summing the initial elliptic point V0 and a scalar multiple of a particular input elliptic point A on the elliptic curve, V1=V0+dA, in accordance with a bit sequence of a particular scalar value d for the elliptic encryption processing; de-randomizing means (22) for performing a second operation of subtracting the initial elliptic point V0 from the sum V1 determined by the first operation, V=V1−V0; and means (24) for providing, as an output, the elliptic point V determined by the de-randomization unit.
摘要翻译：一种用于利用私钥执行椭圆加密处理的加密装置（10），包括：随机化装置（16），用于将椭圆曲线R中的椭圆点R设置为椭圆曲线上的椭圆点R，根据随机值生成; 操作装置（20），用于执行将初始椭圆点V 0 0和/或椭圆曲线V 1上的特定输入椭圆点A的标量倍相加的第一操作，根据用于椭圆加密处理的特定标量值d的比特序列，V = 0＆lt; 0＆gt; + dA; 去随机化装置（22），用于执行从由第一操作确定的和V 1中减去初始椭圆点V 0 <0>的第二操作，V = V _{1 0 以及用于提供由去随机化单元确定的椭圆点V作为输出的装置（24）。}

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