| Presentation | 2012-07-20 A New Higher Order Differential Property of Hierocrypt Tetsuhiro TAKAHASHI, Toshinobu KANEKO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Hierocrypt is a family of block ciphers with SPN structure proposed by Toshiba. Hierocrypt-L1 is for 64-bit block length, and Hierocrypt-3 is for 128-bit block length. For higher order differential property, it has been shown 8-th order differential characteristic for one round (two S-box layers) and 32-nd order differential characteristic for two rounds (four S-box layers). We searched for 8n-th to 32-nd order differential property comprehensively for Hierocrypt-L1 and Hierocrypt-3. As a result, we found new higher order differential characteristics for three S-box layers of 16-th and 24-th order differential property. We show that these characteristics are based on the structure of permutation matrixes mds_L and MDS_H. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Block Cipher / Hierocrypt-L1 / Hierocrypt-3 / Higher Order Differential Characteristics / Saturation Characteristics |
| Paper # | ISEC2012-30,SITE2012-26,ICSS2012-32,EMM2012-22 |
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| Conference Information | |
| Committee | ICSS |
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| Conference Date | 2012/7/12(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 and Communication System Security (ICSS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A New Higher Order Differential Property of Hierocrypt |
| Sub Title (in English) | |
| Keyword(1) | Block Cipher |
| Keyword(2) | Hierocrypt-L1 |
| Keyword(3) | Hierocrypt-3 |
| Keyword(4) | Higher Order Differential Characteristics |
| Keyword(5) | Saturation Characteristics |
| 1st Author's Name | Tetsuhiro TAKAHASHI |
| 1st Author's Affiliation | Graduate of Science and Engineering, Tokyo University of Science() |
| 2nd Author's Name | Toshinobu KANEKO |
| 2nd Author's Affiliation | Graduate of Science and Engineering, Tokyo University of Science |
| Date | 2012-07-20 |
| Paper # | ISEC2012-30,SITE2012-26,ICSS2012-32,EMM2012-22 |
| Volume (vol) | vol.112 |
| Number (no) | 128 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |