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1. 发明申请

US20120069998A1 ENCRYPTION DEVICE 有权
标题翻译：加密设备
公开(公告)号：US20120069998A1
公开(公告)日：2012-03-22
申请号：US13192122
申请日：2011-07-27
申请人： Tsukasa ENDO , Hideo Shimizu , Yuichi Komano , Hanae Ikeda , Atsushi Shimbo
发明人： Tsukasa ENDO , Hideo Shimizu , Yuichi Komano , Hanae Ikeda , Atsushi Shimbo
IPC分类号： H04L9/00
CPC分类号： H04L9/003 , H04L9/0631 , H04L2209/046 , H04L2209/24
摘要： According to one embodiment, in an encryption device, a segmentation unit segments masked plain data into pieces of first segmented data. A first processing unit generates pieces of second segmented data from the pieces of first segmented data. A nonlinear transform unit generates pieces of third segmented data transformed from the pieces of second segmented data. A data integration unit integrates fourth segmented data to generate masked encrypted data. An unmask processing unit generates encrypted data from the masked encrypted data. The exclusive OR of the pieces of second segmented data matches the exclusive OR of input data, subjected to nonlinear transform processing and calculated from the plain data, and the first mask. The exclusive OR of the pieces of third segmented data matches the exclusive OR of transform data, obtained when the nonlinear transform processing is performed on the input data, and the second mask.
摘要翻译：根据一个实施例，在加密设备中，分割单元将屏蔽的普通数据分割成多个第一分段数据。第一处理单元从第一分段数据生成第二分段数据。非线性变换单元生成从第二分割数据变换的第三分段数据。数据集成单元集成第四分段数据以生成被掩蔽的加密数据。解密处理单元从掩蔽的加密数据生成加密数据。第二分段数据的异或与进行非线性变换处理并从普通数据计算的输入数据的异或与第一掩码相匹配。第三分段数据的异或与对输入数据执行非线性变换处理时获得的变换数据的异或与第二掩码相匹配。

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