| Presentation | 2005-07-21 Defeating Simple Power Analysis on Koblitz Curves Katsuyuki OKEYA, Tsuyoshi TAKAGI, Camille VUILLAUME, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Koblitz curves belong to a special class of binary curves on which the scalar multiplication can be computed very efficiently. For this reason, they are suitable candidates for implementations on low-end processors. However, such devices are often vulnerable to side channel attacks. In this paper, we propose two countermeasures against side channel attacks on Koblitz curves. Both of them utilize a fixed-pattern recoding to defeat simple power analysis. Our first technique extends a known countermeasure to the special case of Koblitz curves. In our second technique, the scalar is recoded from left to right, and can be easily stored or even randomly generated. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | elliptic curve cryptosystems / Koblitz curves / smartcard / side channel attacks / SPA countermeasure |
| Paper # | ISEC2005-18,SITE2005-16 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2005/7/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Information Security (ISEC) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Defeating Simple Power Analysis on Koblitz Curves |
| Sub Title (in English) | |
| Keyword(1) | elliptic curve cryptosystems |
| Keyword(2) | Koblitz curves |
| Keyword(3) | smartcard |
| Keyword(4) | side channel attacks |
| Keyword(5) | SPA countermeasure |
| 1st Author's Name | Katsuyuki OKEYA |
| 1st Author's Affiliation | Hitachi, Ltd., Systems Development Laboratory() |
| 2nd Author's Name | Tsuyoshi TAKAGI |
| 2nd Author's Affiliation | Future University |
| 3rd Author's Name | Camille VUILLAUME |
| 3rd Author's Affiliation | Hitachi, Ltd., Systems Development Laboratory |
| Date | 2005-07-21 |
| Paper # | ISEC2005-18,SITE2005-16 |
| Volume (vol) | vol.105 |
| Number (no) | 193 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |