Invention Grant
- Patent Title: Method and system for obfuscating a cryptographic function
- Patent Title (中): 用于模糊加密功能的方法和系统
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Application No.: US12282175Application Date: 2007-02-28
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Publication No.: US08479016B2Publication Date: 2013-07-02
- Inventor: Wilhelmus Petrus Adrianus Johannus Michiels , Paulus Mathias Hubertus Mechtildis Antonius Gorissen
- Applicant: Wilhelmus Petrus Adrianus Johannus Michiels , Paulus Mathias Hubertus Mechtildis Antonius Gorissen
- Applicant Address: NL
- Assignee: Irdeto B.V.
- Current Assignee: Irdeto B.V.
- Current Assignee Address: NL
- Agency: Hayes Soloway P.C.
- Priority: EP06110974 20060310; EP06116693 20060706; EP06117036 20060712; EP07102674 20070220
- International Application: PCT/IB2007/050640 WO 20070228
- International Announcement: WO2007/105126 WO 20070920
- Main IPC: G06F21/00
- IPC: G06F21/00
Abstract:
A method of protecting an integrity of a data processing system. The method comprises determining (902) a data string to be protected, an integrity of the data string being an indication of the integrity of the data processing system. Computing (904) a set of parameters representing a predetermined data processing function, using a redundancy in the set of parameters to incorporate the data string into a bit representation of the set of parameters. Enabling (906) the system to process data according to the set of parameters. The set of parameters represents at least part of a cryptographic algorithm including a cryptographic key. The set of parameters represents a network of look-up tables. The network of look-up tables comprises a plurality of look-up tables of a white-box implementation of a data processing algorithm. The data processing algorithm comprises a cryptographic algorithm.
Public/Granted literature
- US20090158051A1 METHOD AND SYSTEM FOR OBFUSCATING A CRYPTOGRAPHIC FUNCTION Public/Granted day:2009-06-18
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