| Presentation | 2013-07-18 Higher Order Differential Attack on HyRAL using Control Transform and Observation Transform Naoki SHIBAYAMA, Yasutaka IGARASHI, Toshinobu KANEKO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | HyRAL is a 128-bit block cipher proposed by Hirata in 2010. It has been reported that 14-round HyRAL with 256-bit secret key is attackable by saturation attack using 10-round 64-th order differential characteristic. This paper shows a new higher order differential property of HyRAL. With control transform and observation transform, we found a 11-round saturation characteristic using 104-th order differential. By a close analysis of byte-values, the reason why such characteristic holds is clarified. If we use it, for the case of a 256-bit secret key, it is possible to apply the higher order differential attack to 16-round HyRAL using the partial sum technique proposed by Ferguson et al. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Block Cipher / HyRAL / Higher Order Differential Property / Cryptanalysis |
| Paper # | ISEC2013-20,SITE2013-15,ICSS2013-25,EMM2013-22 |
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| Conference Information | |
| Committee | SITE |
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| Conference Date | 2013/7/11(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Social Implications of Technology and Information Ethics (SITE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Higher Order Differential Attack on HyRAL using Control Transform and Observation Transform |
| Sub Title (in English) | |
| Keyword(1) | Block Cipher |
| Keyword(2) | HyRAL |
| Keyword(3) | Higher Order Differential Property |
| Keyword(4) | Cryptanalysis |
| 1st Author's Name | Naoki SHIBAYAMA |
| 1st Author's Affiliation | Japan Air Self-Defense Force() |
| 2nd Author's Name | Yasutaka IGARASHI |
| 2nd Author's Affiliation | Kagoshima University |
| 3rd Author's Name | Toshinobu KANEKO |
| 3rd Author's Affiliation | Tokyo University of Science |
| Date | 2013-07-18 |
| Paper # | ISEC2013-20,SITE2013-15,ICSS2013-25,EMM2013-22 |
| Volume (vol) | vol.113 |
| Number (no) | 136 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |