发明名称 |
ENCRYPTION COMPUTING DEVICE |
摘要 |
<p>An apparatus and a method for performing a hyperelliptic curve cryptography process at a high speed in a highly secure manner are provided. A base point D is produced such that the base point D and one or more of precalculated data in addition to the base point used in a scalar multiplication operation based on a window algorithm are degenerate divisors with a weight smaller than genus g of a hyperelliptic curve. An addition operation included in the scalar multiplication operation based on the window algorithm is accomplished by performing an addition operation of adding a degenerate divisor and a non-degenerate divisor, whereby a high-speed operation is achieved without causing degradation in security against key analysis attacks such as SPA.</p> |
申请公布号 |
EP1816624(A4) |
申请公布日期 |
2008.12.17 |
申请号 |
EP20050806900 |
申请日期 |
2005.11.15 |
申请人 |
SONY CORPORATION |
发明人 |
KATAGI, MASANOBU;AKISHITA, TORU;KITAMURA, IZURU;TAKAGI, TSUYOSHI |
分类号 |
G09C1/00;H04L9/10 |
主分类号 |
G09C1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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