发明名称 |
Verbesserungen in der Anwendung von bilinearen Abbildungen bei kryptographischen Anwendungen |
摘要 |
Cryptographic methods are known that involve the computation of a non-degenerate bilinear mapping of first and second elements (P 1 , Q 1 ) one of which comprises a secret of a first entity (A). For a mapping implemented as, for example, a Tate pairing, the mapping is computable by applying a predetermined function (f) to the first and second elements (P 1 , Q 1 ) and then exponentiating the result with a known exponent (e pub ). Improvements in respect of computational loading, size of output, and security are enabled for the first party (A) by arranging for the first entity to carry out (12) only part of the mapping, a second entity (B) being used to complete computation (13) of the mapping. Cryptographic applications using these improvements are also disclosed. |
申请公布号 |
DE602005010039(D1) |
申请公布日期 |
2008.11.13 |
申请号 |
DE20056010039T |
申请日期 |
2005.04.22 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.;STMICROELECTRONICS S.R.L., AGRATE BRIANZA |
发明人 |
HARRISON, KEITH ALEXANDER;CHEN, LIQUN;BERTONI, GUIDO MARCO;FRAGNETO, PASQUALINA;PELOSI, GERARDO |
分类号 |
H04L9/32;G06F7/72;H04L9/30 |
主分类号 |
H04L9/32 |
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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