Invention Publication
- Patent Title: METHODS AND APPARATUS FOR PERFORMING AN ELLIPTIC CURVE SCALAR MULTIPLICATION OPERATION USING SPLITTING
- Patent Title (中): 方法和装置用于进行标量乘法按司椭圆曲线上
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Application No.: EP08733548.5Application Date: 2008-03-06
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Publication No.: EP2119100A1Publication Date: 2009-11-18
- Inventor: EBEID, Nevine Maurice Nassif
- Applicant: Research in Motion Limited
- Applicant Address: 295 Phillip Street Waterloo, ON N2L 3W8 CA
- Assignee: Research in Motion Limited
- Current Assignee: Research in Motion Limited
- Current Assignee Address: 295 Phillip Street Waterloo, ON N2L 3W8 CA
- Agency: Patel, Binesh
- Priority: US893297P 20070306; US40004 20080229
- International Announcement: WO2008106792 20080912
- Main IPC: H04L9/30
- IPC: H04L9/30 ; H04L9/28
Abstract:
For an Elliptic Curve Scalar Multiplication (ECSM) operation to be performed on a scalar and a base point, a given previous set of parameters that was used to split the scalar for a previous ECSM operation and a selected random integer are used to determine a new set of parameters for splitting the scalar. By basing the new set of parameters on the previous set of parameters, repeated use of the scalar to determine key-splitting parameters is avoided and susceptibility to a Differential Power Analysis Side Channel attack is minimized.
Public/Granted literature
- EP2119100B1 METHODS AND APPARATUS FOR PERFORMING AN ELLIPTIC CURVE SCALAR MULTIPLICATION OPERATION USING SPLITTING Public/Granted day:2011-10-05
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