发明申请
- 专利标题： EXPONENT OBFUSCATION
- 专利标题（中）： 明示障碍
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申请号： US12991356申请日： 2009-05-05
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公开(公告)号： US20110064215A1公开(公告)日： 2011-03-17
- 发明人: Wilhelmus P. A. J. Michiels , Paulus M. H. M. A. Gorissen
- 申请人： Wilhelmus P. A. J. Michiels , Paulus M. H. M. A. Gorissen
- 申请人地址： NL Hoofddorp
- 专利权人： Irdeto B.V.
- 当前专利权人： Irdeto B.V.
- 当前专利权人地址： NL Hoofddorp
- 优先权： EP08155798.5 20080507
- 国际申请： PCT/IB09/51837 WO 20090505
- 主分类号： H04L9/28
- IPC分类号： H04L9/28
摘要：
A method of obfuscating an exponent is provided. The method comprises identifying a value λ for which it holds that λ>0 and x2=1 for a plurality of elements x which are to be used in a cryptographic process. The method further comprises identifying an obfuscated exponent y which is greater than λ and providing information indicative of the obfuscated exponent y. The method comprises establishing a key value a, wherein a
公开/授权文献
- US08600047B2 Exponent obfuscation 公开/授权日：2013-12-03
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