Invention Grant
US07676037B2 Cryptographic method capable of protecting elliptic curve code from side channel attacks
有权
能够保护椭圆曲线码免受侧边信道攻击的加密方法
- Patent Title: Cryptographic method capable of protecting elliptic curve code from side channel attacks
- Patent Title (中): 能够保护椭圆曲线码免受侧边信道攻击的加密方法
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Application No.: US11014905Application Date: 2004-12-20
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Publication No.: US07676037B2Publication Date: 2010-03-09
- Inventor: Bae-eun Jung , Kyung-hee Lee , Chae-hoon Lim
- Applicant: Bae-eun Jung , Kyung-hee Lee , Chae-hoon Lim
- Applicant Address: KR Suwon-Si
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Suwon-Si
- Agency: Staas & Halsey LLP
- Priority: KR10-2003-0094243 20031220
- Main IPC: H04L9/28
- IPC: H04L9/28 ; H04L9/00 ; H04L9/08 ; H04L9/32
Abstract:
An elliptic curve cryptography method which generates a public key for use in a communication encryption using an elliptic curve, including: changing a number of a secret key (d) of (k) bits to an odd number; encoding the secret key to yield an encoded secret key (d) in which a most significant bit (MSB) is (1) and a rest positional number is (1) or (−1); and computing the public key (Q=Dp) by multiplying the encoded secret key (d) by a predetermined point (P) on the elliptic curve by a scalar multiplication.
Public/Granted literature
- US20050169462A1 Cryptographic method capable of protecting elliptic curve code from side channel attacks Public/Granted day:2005-08-04
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