Invention Grant
- Patent Title: Method and apparatus for generating a public key in a manner that counters power analysis attacks
- Patent Title (中): 以计数器功率分析攻击的方式产生公钥的方法和装置
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Application No.: US12039998Application Date: 2008-02-29
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Publication No.: US08050403B2Publication Date: 2011-11-01
- Inventor: Nevine Maurice Nassif Ebeid
- Applicant: Nevine Maurice Nassif Ebeid
- Applicant Address: CA Waterloo
- Assignee: Research In Motion Limited
- Current Assignee: Research In Motion Limited
- Current Assignee Address: CA Waterloo
- Agency: Ridout & Maybee LLP
- Main IPC: H04K1/00
- IPC: H04K1/00
Abstract:
A public key for an Elliptic Curve Cryptosystem is generated in a manner that acts as a countermeasure to power analysis attacks. In particular, a known scalar multiplication method is enhanced by, in one aspect, performing a right shift on the private key. The fixed-sequence window method includes creation and handling of a translated private key. Conveniently, as a result of the right shift, the handling of the translated private key is made easier and more efficient.
Public/Granted literature
- US20080219438A1 Method and Apparatus for Generating a Public Key in a Manner That Counters Power Analysis Attacks Public/Granted day:2008-09-11
Information query
