发明授权
- 专利标题： System for making program difficult to read, device for making program difficult to read, and method for making program difficult to read
- 专利标题（中）： 使程序难以阅读的系统，使程序难以阅读的设备和使程序难以阅读的方法
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申请号： US12297929申请日： 2007-04-27
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公开(公告)号： US08479018B2公开(公告)日： 2013-07-02
- 发明人: Yuichi Futa , Taichi Sato , Rieko Asai , Motoji Ohmori , Masahiro Mambo
- 申请人： Yuichi Futa , Taichi Sato , Rieko Asai , Motoji Ohmori , Masahiro Mambo
- 申请人地址： JP Osaka
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： Wenderoth, Lind & Ponack, L.L.P.
- 优先权： JP2006-125926 20060428
- 国际申请： PCT/JP2007/059158 WO 20070427
- 国际公布： WO2007/126049 WO 20071108
- 主分类号： G06F11/30
- IPC分类号： G06F11/30
摘要：
An obfuscating apparatus creates a table for inputting the same number of arguments for multiplying and squaring operations, and sets the output values of the table so that the outputs may depend on the arguments. With regard to the squaring operations, there are added and tabulated adding operations using the arguments necessary only for the multiplications, so that the number of arguments is equal to that of the multiplication operations. The outputs depend on all the arguments, so that the presence or absence of the added arguments is unknown unlike the case in which dummy arguments that are not processed are added.
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