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21. 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

22. 发明授权

US08391477B2 Cryptographic device having tamper resistance to power analysis attack 有权
标题翻译：具有抗电力分析攻击的加密设备
公开(公告)号：US08391477B2
公开(公告)日：2013-03-05
申请号：US11782168
申请日：2007-07-24
申请人： Tetsuya Izu , Kouichi Itoh , Masahiko Takenaka
发明人： Tetsuya Izu , Kouichi Itoh , Masahiko Takenaka
IPC分类号： H04K1/00 , H04L9/00 , G06F7/58 , G06F11/30 , G06F12/14
CPC分类号： H04L9/3066 , G06F7/725 , G06F2207/7238 , H04L9/003 , H04L9/302 , H04L2209/08 , H04L2209/127
摘要： A randomly selected point on an elliptic curve is set as the initial value of a variable and calculation including a random point value is performed in an algorithm for calculating arbitrary scalar multiple operation on an elliptic curve when scalar multiplication and addition on an elliptic curve are defined, then a calculation value obtained as a result of including a random point is subtracted from the calculation result, whereby an intended scalar multiple operation value on an elliptic curve is determined.
摘要翻译：将椭圆曲线上随机选择的点设置为变量的初始值，并且在用于在椭圆曲线上计算任意标量多次操作的算法中执行包括随机点值的计算，当在椭圆曲线上进行标量乘法和加法时，，则从计算结果中减去作为包括随机点的结果而获得的计算值，由此确定椭圆曲线上的期望标量多重操作值。

23. 发明授权

US08312266B2 Methods and apparatus for verifying electronic mail 有权
标题翻译：用于验证电子邮件的方法和装置
公开(公告)号：US08312266B2
公开(公告)日：2012-11-13
申请号：US12166971
申请日：2008-07-02
申请人： Takashi Yoshioka , Masahiko Takenaka , Tetsuya Izu
发明人： Takashi Yoshioka , Masahiko Takenaka , Tetsuya Izu
IPC分类号： H04L29/06
CPC分类号： H04L63/126 , H04L51/00 , H04L63/123
摘要： A computer extracts the header information from an electronic mail, including an originality guarantee. The computer generates a header characterization for the header information subject to originality guarantee, and extracts message body information from the electronic mail and generates a body characterization for the message body information as well. The generated characterization set applies the header characterization and the body characterization, combined. The verification information is added to the generated characterization set for applying a signature, and characterization set is linked to electronic mail.
摘要翻译：计算机从电子邮件中提取标题信息，包括原创性保证。计算机产生头文件标题，以保证原始性，并从电子邮件中提取消息体信息，并生成消息体信息的身体特征。生成的特征集合应用头部表征和身体表征，组合。将验证信息添加到生成的表征集中以应用签名，并且表征集与电子邮件相关联。

24. 发明申请

US20110194693A1 CRYPTOGRAPHIC PROCESSING APPARATUS AND METHOD 审中-公开
标题翻译：胶印加工设备和方法
公开(公告)号：US20110194693A1
公开(公告)日：2011-08-11
申请号：US13009645
申请日：2011-01-19
申请人： Tetsuya IZU , Masahiko Takenaka
发明人： Tetsuya IZU , Masahiko Takenaka
IPC分类号： H04L9/00
CPC分类号： G06F21/602 , H04L9/0637 , H04L9/0838 , H04L2209/125 , H04L2209/20
摘要： A cryptographic processing apparatus that encrypts plaintext using a fixed-value common key that is shared with other cryptographic processing apparatus, includes an acquiring unit that acquires random information being used within the cryptographic processing apparatuses, an encrypting unit that encrypts encryption target data using key information and outputs encrypted data when the encryption target data and the key information is set, a transmitting unit that transmits, to the other cryptographic processing apparatus, the encrypted data; and a setting unit that sets the fixed-value common key as the key information and the random information as the encryption target data when the random information is acquired by the acquiring unit, and sets the encrypted data as the key information and at least one portion of the plaintext as the target data when the encrypted data is acquired.
摘要翻译：一种使用与其他密码处理装置共享的固定值公用密钥对明文进行加密的密码处理装置，包括获取单元，其获取密码处理装置内正在使用的随机信息，加密单元，使用密钥信息对加密对象数据进行加密并且当加密对象数据和密钥信息被设置时，输出加密数据;发送单元，向其他密码处理装置发送加密数据; 以及设置单元，其在所述获取单元获取所述随机信息时将所述固定值公共密钥设置为所述密钥信息，并且所述随机信息作为所述加密对象数据，并将所述加密数据设置为所述密钥信息，并且至少一部分作为获取加密数据时的目标数据。

25. 发明申请

US20100232601A1 ELLIPTIC CURVE ARITHMETIC PROCESSING UNIT AND ELLIPTIC CURVE ARITHMETIC PROCESSING PROGRAM AND METHOD 审中-公开
标题翻译：椭圆曲线算术处理单元和椭圆曲线算术处理程序和方法
公开(公告)号：US20100232601A1
公开(公告)日：2010-09-16
申请号：US12688033
申请日：2010-01-15
申请人： Kouichi ITOH , Dai Yamamoto , Tetsuya Izu , Masahiko Takenaka , Kazuyoshi Furukawa
发明人： Kouichi ITOH , Dai Yamamoto , Tetsuya Izu , Masahiko Takenaka , Kazuyoshi Furukawa
IPC分类号： H04L9/28
CPC分类号： G06F7/725 , G06F2207/7271
摘要： An apparatus for executing cryptographic calculation on the basis of an elliptic point on an elliptic curve includes: a memory for storing a first value including a plurality of digits; and a processor for executing a process including: obtaining a second value representing a point on the elliptic curve; calculating output values by using a predetermined equation, each digit of the first value, and the second value; determining whether at least one of the second value and the output values indicates a point of infinity; terminating the calculation when at least one of the second value and the output values indicates the point at infinity; and completing calculation when both the second value and the output values do not indicate the point at infinity, so as to obtain a result of the cryptographic calculation.
摘要翻译：一种用于基于椭圆曲线上的椭圆点执行加密计算的装置包括：存储器，用于存储包括多个数字的第一值; 以及用于执行处理的处理器，包括：获得表示所述椭圆曲线上的点的第二值; 通过使用预定方程，第一值的每个数字和第二值来计算输出值; 确定所述第二值和所述输出值中的至少一个是否指示无限点; 当所述第二值和所述输出值中的至少一个指示所述无限远点时终止所述计算; 并且当第二值和输出值都不表示无限远点时完成计算，以获得加密计算的结果。

26. 发明授权

US07639808B2 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：US07639808B2
公开(公告)日：2009-12-29
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： H04K1/00 , H04L9/32
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(p^m) 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 “^” 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（p ^ m）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是素数，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，用于对指向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为0的值。该装置可以执行椭圆曲线密码系统中的标量乘法，具有抗侧信道攻击。

27. 发明申请

US20090207997A1 ELLIPTIC CURVE CRYPTOSYSTEM APPARATUS, STORAGE MEDIUM STORING ELLIPTIC CURVE CRYPTOSYSTEM PROGRAM AND ELLIPTIC CURVE CRYPTOSYSTEM ARITHMETIC METHOD 有权
标题翻译： ELLIPTIC CURVE CRYPTOSYSTEM APPARATUS，STORAGE MEDIUM STORING ELLIPTIC CURVE CRYPTOSYSTEM PROGRAM AND ELLIPTIC CURVE CRYPTOSYSTEM ARITHMETIC METHOD
公开(公告)号：US20090207997A1
公开(公告)日：2009-08-20
申请号：US12365560
申请日：2009-02-04
申请人： Tetsuya IZU , Tsuyoshi Takagi
发明人： Tetsuya IZU , Tsuyoshi Takagi
IPC分类号： H04L9/28
CPC分类号： G06F7/725 , G06F2207/7261
摘要： A scalar multiplication can be performed on an elliptic curve cryptosystem at a high speed. P is set as an initial value of Q[0], and 2×P is set as an initial value of Q[1]. An elliptic curve doubling ECDBL of Q[d[i]] is performed, and an arithmetic result is stored in Q[2]. An elliptic curve addition ECADD of Q[0] and Q[1] is performed, and an arithmetic result is stored in Q[1]. Q[2−d[i]] is stored in Q[0]. Q[1+d[i]] is stored in Q[1]. The elliptic curve addition ECADD and the elliptic curve doubling ECDBL are concurrently performed in the respective processors.
摘要翻译：可以在椭圆曲线密码系统上高速执行标量乘法。 P被设置为Q [0]的初始值，并且将2xP设置为Q [1]的初始值。执行Q [d [i]]的椭圆曲线加倍ECDBL，并将算术结果存储在Q [2]中。执行Q [0]和Q [1]的椭圆曲线加法ECADD，并将算术结果存储在Q [1]中。 Q [2-d [i]]存储在Q [0]中。 Q [1 + d [i]]存储在Q [1]中。在相应的处理器中同时执行椭圆曲线加法ECADD和倍增ECDBL的椭圆曲线。

28. 发明申请

US20080256362A1 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：US20080256362A1
公开(公告)日：2008-10-16
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： G06F9/06
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。

29. 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'）。

30. 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。

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