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11. 发明申请

US20060235921A1 Device and method for calculating conversion parameter of montgomery modular multiplication and program therefor 有权
标题翻译：用于计算montgomery模数乘法的转换参数的装置和方法及其程序
公开(公告)号：US20060235921A1
公开(公告)日：2006-10-19
申请号：US11230592
申请日：2005-09-21
申请人： Kouichi Itoh , Masahiko Takenaka , Naoya Torii
发明人： Kouichi Itoh , Masahiko Takenaka , Naoya Torii
IPC分类号： G06F7/00
CPC分类号： G06F7/728
摘要： A method for calculating a conversion parameter of the Montgomery modular multiplication to improve the efficiency of software installation, comprising a first step for calculating H0=2v×R (mod n) (where v is an integer, v≧1, and (m×k)/v is an integer), a second step for calculating Hp=2v×2p×R (mod n) from H0=2v×R (mod n) by repeating Hi=REDC(Hi-1, Hi-1)n with respect to i=1, 2, . . . , p (where p represents an integer satisfying the condition 2p≧(m×k)/v>2p−1, REDC represents the Montgomery modular multiplication REDC(a, b)n=a×b×R−1 (mod n), and xˆi represents exponential computation xi); and a third step for calculating Hp=R2 (mod n) by calculating Hp=REDC(Hp, g)n with respect to Hp obtained in the second step when 2p>(m×k)/v (where g=2k×E(p,m,k), E(p, m, k)=2×m−(v×2p)/k) and finally outputting Hp as R2 (mod n).
摘要翻译：一种用于计算蒙哥马利模乘的转换参数以提高软件安装效率的方法，包括：计算第一步骤，用于计算H0 / （其中v是整数，v> = 1，并且（mxk）/ v是整数），用于计算H 2 p 2 = 2的第二步骤 -character-00001“he =”3.13mm“wi =”2.12mm“file =”US20060235921A1-20061019-P00900.TIF“alt =”custom character“img-content =”character“img-format =”tif“？> 通过重复H 1 = H（H（H）），H H 2（R 2）相对于i = 1,2，...，i-1，H i-1，...，n）。。。，p（其中p表示满足条件2的整数p > =（mxk）/ v> 2 p-1，REDC表示蒙哥马利模乘乘法REDC（a，（mod n），xi表示指数计算，x i =＆Sigma; 以及用于通过计算H H p = H 2 H（H p p）来计算H H p P 2 / R 2（mod n）的第三步骤，（mxk）/ v（其中g = 0），其中g = （p，m，k），E（p，m，k）= 2xm-（vx2
）/ k），最后输出H p 作为R 2（mod n）。

12. 发明授权

US07900050B2 Digital document management system, digital document management method, and digital document management program 有权
标题翻译：数字文件管理系统，数字文件管理方法和数字文件管理程序
公开(公告)号：US07900050B2
公开(公告)日：2011-03-01
申请号：US11512323
申请日：2006-08-30
申请人： Tetsuya Izu , Masahiko Takenaka , Takashi Yoshioka
发明人： Tetsuya Izu , Masahiko Takenaka , Takashi Yoshioka
IPC分类号： H04L9/32
CPC分类号： H04L9/321 , G06F21/645 , G06Q20/3821 , G06Q20/3829 , G06Q20/4012 , G06Q50/188 , H04L9/3073 , H04L9/3247 , H04L2209/60 , H04L2209/68
摘要： Disclosed is a digital document management program capable of achieving a third-party certification of document information with reduced amount of meta data.At the registration time of new document information, the digital document management program manages a digital signature created in association with document information. At the correction time of the document information, the program acquires partial identification information related to a corrected part of the document information before correction, creates a digital signature to be appended to the corrected document information, and manages the digital signature and partial identification information related to the corrected part of the document information in association with the corrected document information. At the verification time, the program uses partial identification information, the partial identification information corresponding to a corrected part of the document information before correction, and digital signature to perform verification.
摘要翻译：公开了一种数字文档管理程序，其能够实现具有减少的元数据量的文档信息的第三方认证。在新文件信息的注册时，数字文档管理程序管理与文档信息相关联创建的数字签名。在文件信息的校正时间，程序获取与校正前的文档信息的校正部分相关的部分识别信息，创建要附加到校正文档信息的数字签名，并管理数字签名和部分识别信息与校正的文档信息相关联地被修改为文档信息的部分。在验证时，程序使用部分识别信息，对应于校正前的文档信息的校正部分的部分识别信息，以及数字签名进行验证。

13. 发明申请

US20090210715A1 Document verification apparatus, document verification method, and computer product 审中-公开
标题翻译：文件验证装置，文件验证方法和计算机产品
公开(公告)号：US20090210715A1
公开(公告)日：2009-08-20
申请号：US12320595
申请日：2009-01-29
申请人： Tetsuya Izu , Masahiko Takenaka
发明人： Tetsuya Izu , Masahiko Takenaka
IPC分类号： H04L9/32 , G06F21/24
CPC分类号： G06F21/64
摘要： In verifying a digital document, an input of a digital document is received and the digital document is divided into arbitrary constituent parts. A normal random number or a pseudo random number is assigned to each of the constituent parts according to the order in which the constituent parts appear in the digital document. Thus, verification of the authenticity of a digital document is enabled even when an alteration, such as a change of the order of the partial documents or a copy thereof, has been made to the digital document.
摘要翻译：在验证数字文档时，接收数字文档的输入，并将数字文档分成任意组成部分。根据组成部分出现在数字文档中的顺序，将正常随机数或伪随机数分配给每个组成部分。因此，即使已经对数字文档进行了诸如更改部分文档的顺序或其副本的改变，也能够验证数字文档的真实性。

14. 发明授权

US08719578B2 Document verifying apparatus, document verifying method, and computer product 有权
标题翻译：文件验证装置，文件验证方法和计算机产品
公开(公告)号：US08719578B2
公开(公告)日：2014-05-06
申请号：US12492592
申请日：2009-06-26
申请人： Tetsuya Izu , Masahiko Takenaka
发明人： Tetsuya Izu , Masahiko Takenaka
IPC分类号： H04L9/00
CPC分类号： H04L9/3236 , H04L9/3247 , H04L2209/60 , H04L2209/88
摘要： A computer-readable recording medium stores therein a document verifying program. The document verifying program causes a computer to execute receiving input of an electronic document; dividing the electronic document received into arbitrary components; calculating a hash value for each of the components; correlating, for each component, the hash value calculated for the component and a random number allocated to the component according to an appearance position of the component in the electronic document; creating for each component and based on the hash value and the random number correlated for the component at the correlating, a first digital signature and a second digital signature that are different from each other; and appending to each component, the first digital signature and the second digital signature created for the component at the creating.
摘要翻译：计算机可读记录介质中存储有文档验证程序。文档验证程序使计算机执行电子文档的接收输入; 将收到的电子文档分成任意组成部分; 计算每个组件的散列值; 根据电子文档中的组件的外观位置，为每个组件分配针对组件计算的散列值和分配给组件的随机数; 为每个组件创建并基于哈希值和在相关的组件相关的随机数，第一数字签名和第二数字签名彼此不同; 并附加到每个组件，在创建时为组件创建的第一个数字签名和第二个数字签名。

15. 发明授权

US08533483B2 Data processing apparatus and digital signature method 有权
标题翻译：数据处理装置和数字签名方法
公开(公告)号：US08533483B2
公开(公告)日：2013-09-10
申请号：US12884476
申请日：2010-09-17
申请人： Tetsuya Izu , Masahiko Takenaka
发明人： Tetsuya Izu , Masahiko Takenaka
IPC分类号： H04L29/06
CPC分类号： G06F21/64
摘要： A data processing apparatus includes, an input unit to accept information on one or more deletion-target data blocks specified from a plurality of data blocks, a hash generating unit to calculate a hash value of each of the plurality of data blocks, an auxiliary data generating unit to calculate auxiliary data β=gH1(mod N) of a signer based on predetermined values g and N and a product H1 of the hash values of one or more deletion-target data blocks, a digital signature generating unit to calculate intermediate data α=gH2(mod N) based on the predetermined values g and N and a product H2 of the hash values of one or more remaining data blocks to generate a digital signature for a combination of the intermediate data α and position data of one or more deletion-target data blocks with a signing key of a modifier.
摘要翻译：数据处理装置包括：输入单元，接受关于从多个数据块指定的一个或多个删除目标数据块的信息;散列生成单元，用于计算多个数据块中的每一个的散列值;辅助数据生成单元，基于预定值g和N以及一个或多个删除目标数据块的哈希值的乘积H1来计算签名者的辅助数据β= gH1（mod N），计算中间数据的数字签名生成单元基于预定值g和N的α= gH2（mod N）以及一个或多个剩余数据块的哈希值的乘积H2，以生成用于中间数据α和一个或多个的位置数据的组合的数字签名具有修饰符的签名密钥的删除目标数据块。

16. 发明授权

US08452973B2 Digital signature method, program, and apparatus 有权
标题翻译：数字签名方法，程序和装置
公开(公告)号：US08452973B2
公开(公告)日：2013-05-28
申请号：US12688952
申请日：2010-01-18
申请人： Tetsuya Izu , Masahiko Takenaka
发明人： Tetsuya Izu , Masahiko Takenaka
IPC分类号： H04L9/32
CPC分类号： H04L9/3247 , H04L9/3236
摘要： A method for generating a digital signature with respect to an electronic document, the method including: inputting a target electronic document and a corresponding digital signature σ; dividing the target electronic document into a plurality of partial documents mi; and when a revision of the partial documents is to be performed, in a case where deletion of the one partial document is to be performed, when sanitization is not prohibited, exponentiating the digital signature σ twice with a hash value Gi, when sanitization is prohibited, exponentiating σ with the Gi; in a case where sanitization is to be performed, replacing a partial document by Gi; in a case where deletion is to be prohibited, exponentiating σ with a hash value Hi; in a case where the sanitization is to be prohibited, exponentiating σ with Gi; and updating σ.
摘要翻译：一种用于生成关于电子文档的数字签名的方法，所述方法包括：输入目标电子文档和对应的数字签名σ; 将目标电子文档划分为多个部分文档mi; 并且当要执行部分文档的修订时，在要执行删除一个部分文档的情况下，当不禁止消毒时，使用散列值Gi将数字签名西格玛取代两次，当禁止消毒时，与Gi相关的西格玛在要进行消毒的情况下，用Gi代替部分文件; 在要禁止删除的情况下，具有哈希值Hi的指数化Σ 在禁止消毒的情况下，用Gi代替西格玛; 并更新西格玛。

17. 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。

18. 发明申请

US20110072278A1 DATA PROCESSING APPARATUS AND DIGITAL SIGNATURE METHOD 有权
标题翻译：数据处理设备和数字签名方法
公开(公告)号：US20110072278A1
公开(公告)日：2011-03-24
申请号：US12884476
申请日：2010-09-17
申请人： Tetsuya IZU , Masahiko Takenaka
发明人： Tetsuya IZU , Masahiko Takenaka
IPC分类号： G06F12/14
CPC分类号： G06F21/64
摘要： A data processing apparatus includes, an input unit to accept information on one or more deletion-target data blocks specified from a plurality of data blocks, a hash generating unit to calculate a hash value of each of the plurality of data blocks, an auxiliary data generating unit to calculate auxiliary data β=gH1(mod N) of a signer based on predetermined values g and N and a product H1 of the hash values of one or more deletion-target data blocks, a digital signature generating unit to calculate intermediate data α=gH2(mod N) based on the predetermined values g and N and a product H2 of the hash values of one or more remaining data blocks to generate a digital signature for a combination of the intermediate data α and position data of one or more deletion-target data blocks with a signing key of a modifier.
摘要翻译：数据处理装置包括：输入单元，接受关于从多个数据块指定的一个或多个删除目标数据块的信息;散列生成单元，用于计算多个数据块中的每一个的散列值;辅助数据生成单元，基于预定值g和N以及一个或多个删除目标数据块的散列值的乘积H1来计算签名者的辅助数据＆bgr; = gH1（mod N），计算中间值的数字签名生成单元基于预定值g和N的数据α= gH2（mod N）和一个或多个剩余数据块的哈希值的乘积H2，以生成用于中间数据α和位置数据的组合的数字签名，更多具有修饰符的签名密钥的删除目标数据块。

19. 发明申请

US20130070925A1 COMMUNICATION DEVICE, RECORDING MEDIUM, AND METHOD THEREOF 审中-公开
标题翻译：通信装置，记录介质及其方法
公开(公告)号：US20130070925A1
公开(公告)日：2013-03-21
申请号：US13613633
申请日：2012-09-13
申请人： Kenji Yamada , Tadashige Iwao , Hidefumi Takaoka , Syunsuke Koga , Tetsuya Izu , Masahiko Takenaka
发明人： Kenji Yamada , Tadashige Iwao , Hidefumi Takaoka , Syunsuke Koga , Tetsuya Izu , Masahiko Takenaka
IPC分类号： H04L9/08
CPC分类号： H04L9/08 , H04L9/0891 , H04L63/0435 , H04L63/068 , H04L63/126
摘要： A communication device includes a data storage unit, a decryption unit, an encryption unit, and a judgment unit. The data storage unit stores a piece of encrypted data or a piece of decrypted data. The decryption unit decrypts each provided piece of encrypted data. The encryption unit encrypts each provided piece of decrypted data. The judgment unit issues an instruction to the encryption unit to read from the data storage unit first decrypted data obtained by the decryption unit decrypting first encrypted data with a cryptographic key, and to write back to the data storage unit second encrypted data obtained by the encryption unit encrypting the first decrypted data with the cryptographic key.
摘要翻译：通信装置包括数据存储单元，解密单元，加密单元和判断单元。数据存储单元存储一段加密数据或一片解密数据。解密单元对每个提供的加密数据进行解密。加密单元对每个提供的解密数据进行加密。所述判断单元向所述加密单元发出指令，以从所述数据存储单元读取由所述解密单元获得的第一解密数据，用密码密钥解密第一加密数据，并将所述加密获得的第二加密数据写回到所述数据存储单元单元使用加密密钥加密第一解密数据。

20. 发明申请

US20100185867A1 DIGITAL SIGNATURE METHOD, PROGRAM, AND APPARATUS 有权
标题翻译：数字签名方法，程序和设备
公开(公告)号：US20100185867A1
公开(公告)日：2010-07-22
申请号：US12688952
申请日：2010-01-18
申请人： Tetsuya Izu , Masahiko Takenaka
发明人： Tetsuya Izu , Masahiko Takenaka
IPC分类号： H04L9/32
CPC分类号： H04L9/3247 , H04L9/3236
摘要： A method for generating a digital signature with respect to an electronic document, the method including: inputting a target electronic document and a corresponding digital signature σ; dividing the target electronic document into a plurality of partial documents mi; and when a revision of the partial documents is to be performed, in a case where deletion of the one partial document is to be performed, when sanitization is not prohibited, exponentiating the digital signature σ twice with a hash value Gi, when sanitization is prohibited, exponentiating σ with the Gi; in a case where sanitization is to be performed, replacing a partial document by Gi; in a case where deletion is to be prohibited, exponentiating σ with a hash value Hi; in a case where the sanitization is to be prohibited, exponentiating σ with Gi; and updating σ.
摘要翻译：一种用于生成关于电子文档的数字签名的方法，所述方法包括：输入目标电子文档和相应的数字签名; 将目标电子文档划分为多个部分文档mi; 并且当要执行部分文件的修订时，在要执行删除部分文档的情况下，当不禁止消毒时，对数字签名进行指数化; 两次使用哈希值Gi，当禁止消毒时，指数和sgr; 与吉在要进行消毒的情况下，用Gi代替部分文件; 在删除被禁止的情况下，指数化具有哈希值Hi; 在禁止消毒的情况下，指数化与吉并更新＆sgr。

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