| Presentation | 2002/7/12 Differential and Linear cryptanalysis of CIPHERUNICORN-A Yukiyasu TSUNOO, Hiroyasu KUBO, Maki YAMADA, Tomoyasu SUZAKI, Hiroshi MIYAUCHI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we describe an experimental result of safety against differential and linear cryptanalysis of CIPHERUNICORN-A. Because of the complex structure, it is difficult to calculate the probability of differential and linear characteristics of CIPHERUNICORN-A. We used an mF function in our previous evaluation in order to be able to do the approximate calculation in short term. But, by using the mF function, the approximation of the constant multiplication did not have enough coverage with its possible influential bits relations in differential and linear cryptanalysis. The mF function has two changes from original F function. One is key additions and the other is constant multiplications modified to exclusive OR operations. In this paper, we used a newly defined the mF' function which omitted the change of constant multiplications, searched exhaustively byte-oriented differential and linear influential paths and investigated more strict differential and linear characteristic probabilities. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Block Cipher / CIPHERUNICORN-A / Differential Cryptanalysis / Linear Cryptanalysis |
| Paper # | ISEC2002-42 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2002/7/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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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) | Differential and Linear cryptanalysis of CIPHERUNICORN-A |
| Sub Title (in English) | |
| Keyword(1) | Block Cipher |
| Keyword(2) | CIPHERUNICORN-A |
| Keyword(3) | Differential Cryptanalysis |
| Keyword(4) | Linear Cryptanalysis |
| 1st Author's Name | Yukiyasu TSUNOO |
| 1st Author's Affiliation | NEC Corporation() |
| 2nd Author's Name | Hiroyasu KUBO |
| 2nd Author's Affiliation | NEC Software Hokuriku, Ltd. |
| 3rd Author's Name | Maki YAMADA |
| 3rd Author's Affiliation | NEC Software Hokuriku, Ltd. |
| 4th Author's Name | Tomoyasu SUZAKI |
| 4th Author's Affiliation | NEC Software Hokuriku, Ltd. |
| 5th Author's Name | Hiroshi MIYAUCHI |
| 5th Author's Affiliation | NEC Corporation |
| Date | 2002/7/12 |
| Paper # | ISEC2002-42 |
| Volume (vol) | vol.102 |
| Number (no) | 212 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |