| Presentation | 2002/9/13 Address-bit Differential Power Analysis of OK-ECDH and OK-ECDSA Kouichi ITOH, Tetsuya IZU, Masahiko TAKENAKA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The differential power analysis (DPA) is a powerful attack against the implementation of cryptographic schemes on smart cards. This paper proposes the address-bit DPA in order to apply it to elliptic curve based cryptosystems (ECC). The Address-bit DPA is orginaly proposed by Messerges et al. for common key cryptosystems. The attack analyzes differences of addresses of registers, however, it is thought to be of no effect if the intermediate data are randomized. We extend the attack so that it works against scalar exponentiations in ECC even if data are randomized, i.e. the implementation is resistant against the data-bit DPA. We have experimented the analysis of cryptographic schemes OK-ECDH and OK-ECDSA, which are candidates of the CRYPTREC project in Japan, by two approaches (SE-attack, ZE-attack). We succeeded to reveal (a part of) secret keys by our analysis. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DPA / address-bit DPA / elliptic curve cryptosystems (ECC) / scalar exponentiation / OK-ECDH / OK-ECDSA |
| Paper # | ISEC2002-59 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2002/9/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Information Security (ISEC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Address-bit Differential Power Analysis of OK-ECDH and OK-ECDSA |
| Sub Title (in English) | |
| Keyword(1) | DPA |
| Keyword(2) | address-bit DPA |
| Keyword(3) | elliptic curve cryptosystems (ECC) |
| Keyword(4) | scalar exponentiation |
| Keyword(5) | OK-ECDH |
| Keyword(6) | OK-ECDSA |
| 1st Author's Name | Kouichi ITOH |
| 1st Author's Affiliation | FUJITSU LABORATORIES Ltd., Secure Computing Lab.() |
| 2nd Author's Name | Tetsuya IZU |
| 2nd Author's Affiliation | FUJITSU LABORATORIES Ltd., Secure Computing Lab. |
| 3rd Author's Name | Masahiko TAKENAKA |
| 3rd Author's Affiliation | FUJITSU LABORATORIES Ltd., Secure Computing Lab. |
| Date | 2002/9/13 |
| Paper # | ISEC2002-59 |
| Volume (vol) | vol.102 |
| Number (no) | 323 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |