Invention Grant
- Patent Title: Exponent obfuscation
- Patent Title (中): 指数混淆
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Application No.: US12991356Application Date: 2009-05-05
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Publication No.: US08600047B2Publication Date: 2013-12-03
- Inventor: Wilhelmus P. A. J. Michiels , Paulus M. H. M. A. Gorissen
- Applicant: Wilhelmus P. A. J. Michiels , Paulus M. H. M. A. Gorissen
- Applicant Address: NL
- Assignee: Irdeto Corporate B.V.
- Current Assignee: Irdeto Corporate B.V.
- Current Assignee Address: NL
- Agency: Hayes Soloway P.C.
- Priority: EP08155798 20080507
- International Application: PCT/IB2009/051837 WO 20090505
- International Announcement: WO2009/136361 WO 20091112
- Main IPC: H04L9/00
- IPC: H04L9/00
Abstract:
A method of obfuscating an exponent is provided. The method comprises identifying a value λ for which it holds that λ>0 and xλ=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
Public/Granted literature
- US20110064215A1 EXPONENT OBFUSCATION Public/Granted day:2011-03-17
Information query
