发明申请
US20080025500A1 CRYPTOGRAPHIC DEVICE HAVING TAMPER RESISTANCE TO POWER ANALYSIS ATTACK
有权
具有抵抗功率分析攻击的阻尼器的结构设备
- 专利标题： CRYPTOGRAPHIC DEVICE HAVING TAMPER RESISTANCE TO POWER ANALYSIS ATTACK
- 专利标题（中）： 具有抵抗功率分析攻击的阻尼器的结构设备
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申请号： US11782168申请日： 2007-07-24
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公开(公告)号： US20080025500A1公开(公告)日： 2008-01-31
- 发明人: Tetsuya Izu , Kouichi Itoh , Masahiko Takenaka
- 申请人： Tetsuya Izu , Kouichi Itoh , Masahiko Takenaka
- 专利权人： FUJITSU LIMITED
- 当前专利权人： FUJITSU LIMITED
- 主分类号： H04L9/28
- IPC分类号： H04L9/28 ; G06F1/02
摘要：
A randomly selected point on an elliptic curve is set as the initial value of a variable and calculation including a random point value is performed in an algorithm for calculating arbitrary scalar multiple operation on an elliptic curve when scalar multiplication and addition on an elliptic curve are defined, then a calculation value obtained as a result of including a random point is subtracted from the calculation result, whereby an intended scalar multiple operation value on an elliptic curve is determined.
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