发明名称 |
Elliptic curve cryptosystem apparatus, storage medium storing elliptic curve cryptosystem program, and elliptic curve cryptosystem arithmetic method |
摘要 |
A scalar multiplication can be performed on an elliptic curve cryptosystem at a high speed. P is set as an initial value of Q[0], and 2×P is set as an initial value of Q[1]. An elliptic curve doubling ECDBL of Q[d[i]] is performed, and an arithmetic result is stored in Q[2]. An elliptic curve addition ECADD of Q[0] and Q[1] is performed, and an arithmetic result is stored in Q[1]. Q[2−d[i]] is stored in Q[0]. Q[1+d[i]] is stored in Q[1]. The elliptic curve addition ECADD and the elliptic curve doubling ECDBL are concurrently performed in the respective processors.
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申请公布号 |
US7970131(B2) |
申请公布日期 |
2011.06.28 |
申请号 |
US20090365560 |
申请日期 |
2009.02.04 |
申请人 |
FUJITSU LIMITED |
发明人 |
IZU TETSUYA;TAKAGI TSUYOSHI |
分类号 |
G09C1/00;H04L9/00;G06F7/72 |
主分类号 |
G09C1/00 |
代理机构 |
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代理人 |
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