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    • 35. 发明授权
    • Data transformation apparatus, data transformation method, and computer program
    • 数据变换装置,数据变换方法和计算机程序
    • US08787568B2
    • 2014-07-22
    • US12439302
    • 2007-08-29
    • Kyoji ShibutaniTaizo ShiraiToru AkishitaShiho Moriai
    • Kyoji ShibutaniTaizo ShiraiToru AkishitaShiho Moriai
    • G06F21/00H04L29/06
    • H04L9/0631G09C1/00H04L9/002H04L9/0625
    • 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.
    • 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。
    • 38. 发明申请
    • DATA TRANSFORMATION APPARATUS, DATA TRANSFORMATION METHOD, AND COMPUTER PROGRAM
    • 数据转换设备,数据转换方法和计算机程序
    • US20100002872A1
    • 2010-01-07
    • US12439302
    • 2007-08-29
    • Kyoji ShibutaniTaizo ShiraiToru AkishitaShiho Moriai
    • Kyoji ShibutaniTaizo ShiraiToru AkishitaShiho Moriai
    • H04L9/28G06F17/14G06F17/16
    • H04L9/0631G09C1/00H04L9/002H04L9/0625
    • 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.
    • 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。