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1. 发明授权

US08787568B2 Data transformation apparatus, data transformation method, and computer program 有权
标题翻译：数据变换装置，数据变换方法和计算机程序
公开(公告)号：US08787568B2
公开(公告)日：2014-07-22
申请号：US12439302
申请日：2007-08-29
申请人： Kyoji Shibutani , Taizo Shirai , Toru Akishita , Shiho Moriai
发明人： Kyoji Shibutani , Taizo Shirai , Toru Akishita , Shiho Moriai
IPC分类号： G06F21/00 , H04L29/06
CPC分类号： H04L9/0631 , G09C1/00 , H04L9/002 , H04L9/0625
摘要： A non-linear transformation processing structure having a high implementation efficiency and a high security is realized. Data transformation is performed using a first non-linear transformation part performing non-linear transformation using a plurality of small S-boxes; a linear transformation part receiving all the outputs from the first non-linear transformation part and performing data transformation using a matrix for performing optimal diffusion mappings; and a second non-linear transformation part including a plurality of small non-linear transformation parts that perform non-linear transformation on individual data units into which output data from the linear transformation part is divided. With this structure, appropriate data diffusion can be achieved without excessively increasing a critical path, and a structure with a high implementation efficiency and a high security can be achieved.
摘要翻译：实现了具有高实现效率和高安全性的非线性变换处理结构。使用使用多个小S盒执行非线性变换的第一非线性变换部分执行数据变换; 线性变换部分接收来自第一非线性变换部分的所有输出，并且使用用于执行最佳扩散映射的矩阵执行数据变换; 以及包括多个小的非线性变换部分的第二非线性变换部分，所述多个小的非线性变换部分对来自线性变换部分的输出数据被划分成的各个数据单元执行非线性变换。利用这种结构，可以在不过度增加关键路径的情况下实现适当的数据扩散，并且可以实现具有高实现效率和高安全性的结构。

2. 发明申请

US20100002872A1 DATA TRANSFORMATION APPARATUS, DATA TRANSFORMATION METHOD, AND COMPUTER PROGRAM 有权
标题翻译：数据转换设备，数据转换方法和计算机程序
公开(公告)号：US20100002872A1
公开(公告)日：2010-01-07
申请号：US12439302
申请日：2007-08-29
申请人： Kyoji Shibutani , Taizo Shirai , Toru Akishita , Shiho Moriai
发明人： Kyoji Shibutani , Taizo Shirai , Toru Akishita , Shiho Moriai
IPC分类号： H04L9/28 , G06F17/14 , G06F17/16
CPC分类号： H04L9/0631 , G09C1/00 , H04L9/002 , H04L9/0625
摘要： A non-linear transformation processing structure having a high implementation efficiency and a high security is realized. Data transformation is performed using a first non-linear transformation part performing non-linear transformation using a plurality of small S-boxes; a linear transformation part receiving all the outputs from the first non-linear transformation part and performing data transformation using a matrix for performing optimal diffusion mappings; and a second non-linear transformation part including a plurality of small non-linear transformation parts that perform non-linear transformation on individual data units into which output data from the linear transformation part is divided. With this structure, appropriate data diffusion can be achieved without excessively increasing a critical path, and a structure with a high implementation efficiency and a high security can be achieved.
摘要翻译：实现了具有高实现效率和高安全性的非线性变换处理结构。使用使用多个小S盒执行非线性变换的第一非线性变换部分执行数据变换; 线性变换部分接收来自第一非线性变换部分的所有输出，并且使用用于执行最佳扩散映射的矩阵执行数据变换; 以及第二非线性变换部分，其包括多个小的非线性变换部分，其对来自线性变换部分的输出数据进行分割的各个数据单元执行非线性变换。利用这种结构，可以在不过度增加关键路径的情况下实现适当的数据扩散，并且可以实现具有高实现效率和高安全性的结构。

3. 发明授权

US08396210B2 Cryptographic processing apparatus and cryptographic processing method, and computer program 有权
标题翻译：加密处理装置和加密处理方法以及计算机程序
公开(公告)号：US08396210B2
公开(公告)日：2013-03-12
申请号：US12439250
申请日：2007-08-29
申请人： Kyoji Shibutani , Taizo Shirai , Toru Akishita , Shiho Moriai
发明人： Kyoji Shibutani , Taizo Shirai , Toru Akishita , Shiho Moriai
IPC分类号： H04L29/06
CPC分类号： H04L9/002 , G09C1/00 , H04L9/0625 , H04L2209/122 , H04L2209/125
摘要： A configuration that efficiently executes cryptographic processing to which a plurality of different F-functions are applied is provided. In a configuration that executes cryptographic processing by performing round operations to which different F-functions are selectively applied, a plurality of F-function correspondence tables, each corresponding to one of the F-functions, in which input values and output values or intermediate values are associated with each other are stored in a memory; in accordance with a prescribed cryptographic processing sequence, addresses corresponding to F-functions for the respective rounds are applied to read F-function correspondence tables from the memory; and output values or intermediate values for input values are acquired on the basis of reference to the tables to obtain data transformation results in accordance with the respective F-functions.
摘要翻译：提供了有效地执行应用了多个不同的F功能的加密处理的配置。在通过执行选择性地应用了不同的F功能的循环操作来执行加密处理的配置中，分别对应于F功能之一的多个F函数对应表，其中输入值和输出值或中间值相互关联存储在存储器中; 根据规定的密码处理顺序，对应于各轮的F函数的地址被应用于从存储器读取F函数对应表; 并且基于参考表获取输入值的输出值或中间值，以根据各自的F函数获得数据变换结果。

4. 发明授权

US08380683B2 Data conversion device, data conversion method, and program 有权
标题翻译：数据转换装置，数据转换方法和程序
公开(公告)号：US08380683B2
公开(公告)日：2013-02-19
申请号：US13059643
申请日：2009-08-25
申请人： Taizo Shirai , Kyoji Shibutani , Shiho Moriai , Toru Akishita , Tetsu Iwata
发明人： Taizo Shirai , Kyoji Shibutani , Shiho Moriai , Toru Akishita , Tetsu Iwata
IPC分类号： G06F17/30
CPC分类号： H04L9/0643 , H04L2209/12 , H04L2209/20 , H04L2209/30 , H04L2209/38
摘要： There is realized a data conversion device that performs generation of a hash value with improved analysis resistance and a high degree of safety. There are provided a stirring processing section performing a data stirring process on input data; and a compression processing section performing a data compression process on input data including data segments which are divisions of message data, the message data being a target of a data conversion. Part of multi-stage compression subsections is configured to perform a data compression process based on both of output of the stirring processing section and the data segments in the message data. There is provided such a configuration that the stirring process is executed at least on fixed timing of a compression processing round of plural rounds and thus, there is realized a data conversion device that performs generation of a hash value with improved analysis resistance and a high degree of safety.
摘要翻译：实现了一种数据转换装置，其执行具有改进的分析电阻和高度安全性的哈希值的产生。提供了一种对输入数据执行数据搅拌处理的搅拌处理部分; 以及对包括作为消息数据的划分的数据段的输入数据执行数据压缩处理的压缩处理部，所述消息数据是数据转换的目标。多级压缩子部分被配置为基于搅动处理部分的输出和消息数据中的数据段两者执行数据压缩处理。提供了这样的结构，至少在多轮的压缩处理轮的固定定时执行搅拌处理，因此实现了一种数据转换装置，其执行具有改进的分析电阻和高度的散列值的产生的安全。

5. 发明申请

US20120191986A1 CRYPTOGRAPHIC PROCESSING APPARATUS AND CRYPTOGRAPHIC PROCESSING METHOD, AND COMPUTER PROGRAM 有权
标题翻译：图形处理设备和图形处理方法以及计算机程序
公开(公告)号：US20120191986A1
公开(公告)日：2012-07-26
申请号：US13436223
申请日：2012-03-30
申请人： Kyoji SHIBUTANI , Taizo Shirai , Toru Akishita , Shiho Moriai
发明人： Kyoji SHIBUTANI , Taizo Shirai , Toru Akishita , Shiho Moriai
IPC分类号： G06F21/22
CPC分类号： H04L9/002 , H04L9/0625 , H04L2209/122 , H04L2209/24
摘要： In extended Feistel type common key block cipher processing, a configuration is realized in which an encryption function and a decryption function are commonly used. In a cryptographic processing configuration to which an extended Feistel structure in which the number of data lines d is set to an integer satisfying d≧3 is applied, involution properties, that is, the application of a common function to encryption processing and decryption processing, can be achieved. With a configuration in which round keys are permuted or F-functions are permuted in the decryption processing, processing using a common function can be performed by setting swap functions for the encryption processing and the decryption processing to have the same processing style.
摘要翻译：在扩展的Feistel型通用密钥块密码处理中，实现了通常使用加密功能和解密功能的配置。在将数据线数d设定为满足d≥3的整数的扩展Feistel结构的密码处理配置中，应用了加密处理和解密处理中的共同功能的卷积特性，可以实现。通过在解密处理中将轮密钥置换或F功能配置的配置，可以通过将用于加密处理和解密处理的交换功能设置为具有相同的处理风格来执行使用公共功能的处理。

6. 发明申请

US20110238636A1 DATA CONVERSION DEVICE, DATA CONVERSION METHOD, AND PROGRAM 有权
标题翻译：数据转换设备，数据转换方法和程序
公开(公告)号：US20110238636A1
公开(公告)日：2011-09-29
申请号：US13059643
申请日：2009-08-25
申请人： Taizo Shirai , Kyoji Shibutani , Shiho Moriai , Toru Akishita , Tetsu Iwata
发明人： Taizo Shirai , Kyoji Shibutani , Shiho Moriai , Toru Akishita , Tetsu Iwata
IPC分类号： G06F17/00
CPC分类号： H04L9/0643 , H04L2209/12 , H04L2209/20 , H04L2209/30 , H04L2209/38
摘要： There is realized a data conversion device that performs generation of a hash value with improved analysis resistance and a high degree of safety. There are provided a stirring processing section performing a data stirring process on input data; and a compression processing section performing a data compression process on input data including data segments which are divisions of message data, the message data being a target of a data conversion. Part of multi-stage compression subsections is configured to perform a data compression process based on both of output of the stirring processing section and the data segments in the message data. There is provided such a configuration that the stirring process is executed at least on fixed timing of a compression processing round of plural rounds and thus, there is realized a data conversion device that performs generation of a hash value with improved analysis resistance and a high degree of safety.
摘要翻译：实现了一种数据转换装置，其执行具有改进的分析电阻和高度安全性的哈希值的产生。提供了一种对输入数据执行数据搅拌处理的搅拌处理部分; 以及对包括作为消息数据的划分的数据段的输入数据执行数据压缩处理的压缩处理部，所述消息数据是数据转换的目标。多级压缩子部分被配置为基于搅动处理部分的输出和消息数据中的数据段两者执行数据压缩处理。提供了这样的结构，至少在多轮的压缩处理轮的固定定时执行搅拌处理，因此实现了一种数据转换装置，其执行具有改进的分析电阻和高度的散列值的产生的安全。

7. 发明申请

US20100008498A1 ENCRYPTION PROCESSING APPARATUS, ENCRYPTION METHOD, AND COMPUTER PROGRAM 有权
标题翻译：加密处理设备，加密方法和计算机程序
公开(公告)号：US20100008498A1
公开(公告)日：2010-01-14
申请号：US12439544
申请日：2007-08-29
申请人： Taizo Shirai , Kyoji Shibutani , Toru Akishita , Shiho Moriai
发明人： Taizo Shirai , Kyoji Shibutani , Toru Akishita , Shiho Moriai
IPC分类号： H04L9/00
CPC分类号： H04L9/002 , H04L9/0625 , H04L9/0631 , H04L2209/122 , H04L2209/125 , H04L2209/24
摘要： A common-key blockcipher processing structure that makes analysis of key more difficult and enhances security and implementation efficiency is realized. In a key scheduling part in an encryption processing apparatus that performs common-key blockcipher processing, a secret key is input to an encryption function including a round function employed in an encryption processing part to generate an intermediate key, and the result of performing bijective transformation based on the intermediate key, the secret key, and the like and the result of performing an exclusive-OR operation on the bijective-transformed data are applied to round keys. With this structure, generation of round keys based on the intermediate key generated using the encryption function whose security has been ensured is performed, thereby making it possible to make analysis of the keys more difficult. The structure of the key scheduling part can be simplified, thereby making it possible to improve the implementation efficiency.
摘要翻译：实现了对密钥分析更加困难，提高安全性和实现效率的共同密钥块密码处理结构。在执行公共密钥块密码处理的加密处理装置中的密钥调度部分中，秘密密钥被输入到包括在加密处理部分中采用的循环函数的加密函数以生成中间密钥，并且执行双目变换的结果基于中间密钥，秘密密钥等，以及对双射变换数据执行异或运算的结果被应用于循环密钥。利用这种结构，执行基于使用已经确保其安全性的加密功能生成的中间密钥的循环密钥的生成，从而可以使密钥的分析更加困难。可以简化关键调度部分的结构，提高实施效率。

8. 发明授权

US08787563B2 Data converter, data conversion method and program 有权
标题翻译：数据转换器，数据转换方法和程序
公开(公告)号：US08787563B2
公开(公告)日：2014-07-22
申请号：US13059641
申请日：2009-08-25
申请人： Taizo Shirai , Kyoji Shibutani , Shiho Moriai , Toru Akishita , Tetsu Iwata
发明人： Taizo Shirai , Kyoji Shibutani , Shiho Moriai , Toru Akishita , Tetsu Iwata
IPC分类号： H04K1/00 , H04L9/00 , H04L9/28 , H04L9/06
CPC分类号： H04L9/0643 , H04L9/0637 , H04L2209/122 , H04L2209/125 , H04L2209/20 , H04L2209/30
摘要： A data converter for generating a hash value for message data is disclosed. The data converter executes a data conversion process, which includes compression-function execution sections and process sequences in which divided data blocks constituting message data are processed in parallel. Each compression-function execution section performs a process, using a message scheduling section and a chaining variable processing section. The message scheduling section receives a corresponding divided data block of the message data and performs a message scheduling process. The chaining variable processing section receives an output from the message scheduling section and an intermediate value output from a preceding processing section, and generates output data, which has the same number of bits as in the intermediate value. The compression-function execution sections may use one or more message scheduling sections and chaining variable processing sections.
摘要翻译：公开了一种用于生成消息数据的散列值的数据转换器。数据转换器执行数据转换处理，其包括压缩函数执行部分和处理序列，其中构成消息数据的分割数据块被并行处理。每个压缩函数执行部分使用消息调度部分和链接变量处理部分执行处理。消息调度部接收消息数据的对应的分割数据块，进行消息调度处理。链接变量处理部接收消息调度部的输出和从前一处理部输出的中间值，生成与中间值相同位数的输出数据。压缩函数执行部分可以使用一个或多个消息调度部分和链接可变处理部分。

9. 发明申请

US20100104093A1 Encryption Processing Apparatus, Encryption Processing Method, and Computer Program 有权
标题翻译：加密处理装置，加密处理方法和计算机程序
公开(公告)号：US20100104093A1
公开(公告)日：2010-04-29
申请号：US12439464
申请日：2007-08-29
申请人： Taizo Shirai , Kyoji Shibutani , Toru Akishita , Shiho Moriai
发明人： Taizo Shirai , Kyoji Shibutani , Toru Akishita , Shiho Moriai
IPC分类号： H04L9/28
CPC分类号： H04L9/0625 , G09C1/00 , H04L9/002 , H04L9/0631 , H04L2209/122 , H04L2209/125
摘要： A common-key blockcipher processing configuration with enhanced immunity against attacks such as saturation attacks and algebraic attacks (XSL attacks) is realized. In an encryption processing apparatus that performs common-key blockcipher processing, S-boxes serving as non-linear transformation processing parts set in round-function executing parts are configured using at least two different types of S-boxes. With this configuration, the immunity against saturation attacks can be enhanced. Also, types of S-boxes present a mixture of different types. With this configuration, the immunity against algebraic attacks (XSL attacks) can be enhanced, thereby realizing a highly secure encryption processing apparatus.
摘要翻译：实现了具有针对诸如饱和攻击和代数攻击（XSL攻击）等攻击的增强免疫性的通用密钥块密码处理配置。在执行共同密钥块密码处理的加密处理装置中，使用至少两种不同类型的S盒来配置用作在循环功能执行部分中设置的非线性变换处理部分的S盒。通过这种配置，可以提高对饱和攻击的抗扰度。而且，S盒的类型是不同类型的混合物。利用这种配置，可以增强对代数攻击（XSL攻击）的抗扰度，从而实现高度安全的加密处理装置。

10. 发明申请

US20100014664A1 Cryptographic Processing Apparatus, Cryptographic Processing Method, and Computer Program 有权
标题翻译：加密处理装置，加密处理方法和计算机程序
公开(公告)号：US20100014664A1
公开(公告)日：2010-01-21
申请号：US12518510
申请日：2007-11-21
申请人： Taizo Shirai , Kyoji Shibutani , Toru Akishita , Shiho Moriai
发明人： Taizo Shirai , Kyoji Shibutani , Toru Akishita , Shiho Moriai
IPC分类号： H04L9/00 , H04L9/28
CPC分类号： H04L9/003 , H04L9/0618
摘要： To realize a common-key block cipher process configuration with increased difficulty of key analysis and improved security. In a configuration for storing in a register an intermediate key generated by using a secret key transformation process and performing a transformation process on the register-stored data to generate a round key, a process of swapping (permuting) data segments constituting the register-stored data is executed to generate a round key. For example, four data segments are produced so that two sets of data segments having an equal number of bits are set, and a process of swapping the individual data segments is repeatedly executed to generate a plurality of different round keys. With this configuration, the bit array of each round key can be effectively permuted, and round keys with low relevance can be generated. A high-security cryptographic process with increased difficulty of key analysis can be realized.
摘要翻译：实现密钥分析难度更大，安全性提高的共密密钥密码过程配置。在用于在寄存器中存储通过使用秘密密钥变换处理生成的中间密钥并对寄存器存储的数据执行变换处理以生成循环密钥的配置中，构成寄存器存储的数据段的交换（置换）处理执行数据以生成圆键。例如，产生四个数据段，使得设置具有相等位数的两组数据段，并重复执行交换各个数据段的处理，以生成多个不同的循环密钥。通过这种配置，可以有效地排列每个循环密钥的位阵列，并且可以生成具有低相关性的循环密钥。可以实现密钥分析难度增加的高安全密码过程。

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