| Presentation | 2012-03-01 New Saturation Characteristics of HyRAL Naoki SHIBAYAMA, Toshinobu KANEKO, Seiichiro HANGAI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | HyRAL is the 128-bit block cipher proposed by Hirata in 2010. It has been shown that 13-round with 256-bit secret key is attackable by saturation attack using 9-round 64-th order differential characteristic. This paper shows a new 10-round saturation characteristic of HyRAL using 64-th order differential. The characteristic is a extension of 8-round synchronous 32-nd order differential characteristic from 3-rd round to 10-th round of HyRAL. We show the reason of this characteristics by (m, n)-model's property, and estimates the costs of attack using them. For the case of a 256-bit, secret key, it is possible to apply the saturation attack to 14-round HyRAL. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Block Cipher / HyRAL / Saturation Characteristics / Cryptanalysis |
| Paper # | IT2011-54,ISEC2011-81,WBS2011-55 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2012/2/23(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 | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | New Saturation Characteristics of HyRAL |
| Sub Title (in English) | |
| Keyword(1) | Block Cipher |
| Keyword(2) | HyRAL |
| Keyword(3) | Saturation Characteristics |
| Keyword(4) | Cryptanalysis |
| 1st Author's Name | Naoki SHIBAYAMA |
| 1st Author's Affiliation | Department of Electrical Engineering, Faculty of Engineering, Tokyo University of Science() |
| 2nd Author's Name | Toshinobu KANEKO |
| 2nd Author's Affiliation | Department of Electrical Engineering, Faculty of Science and Technology, Tokyo University of Science |
| 3rd Author's Name | Seiichiro HANGAI |
| 3rd Author's Affiliation | Department of Electrical Engineering, Faculty of Engineering, Tokyo University of Science |
| Date | 2012-03-01 |
| Paper # | IT2011-54,ISEC2011-81,WBS2011-55 |
| Volume (vol) | vol.111 |
| Number (no) | 455 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |