| Presentation | 1998/5/15 Higher Order Differential Attack of MISTY without FL functions Hidema TANAKA, Kazuyuki HISAMATU, Toshinobu KANEKO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The encryption algorithm MISTY, proposed by Matui, is a provably secure against Linear cryptoanalysis and Differential attack. We attacked MISTY without FL functions by using Higher Order Differential Attack. The order of differential depends on the degree of F function and is determined by the chosen plain text. By the easy calculation, the degree of output from 3rd round is not smaller than 36. But we found the chosen plain text which enables the attack using 7th order differential. As the result, we can attack 5 round MISTY without FL functions by using 7th order differentials. This attack needs about 1, 500 chosen plain texts and 2^<16.76> computational cost. The computer simulation took about 0.5[s] |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Block cipher / Higher Order Differential Attack / MISTY |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 1998/5/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| 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) | Higher Order Differential Attack of MISTY without FL functions |
| Sub Title (in English) | |
| Keyword(1) | Block cipher |
| Keyword(2) | Higher Order Differential Attack |
| Keyword(3) | MISTY |
| 1st Author's Name | Hidema TANAKA |
| 1st Author's Affiliation | Department of Electrical Engineering, Science University of TOKYO() |
| 2nd Author's Name | Kazuyuki HISAMATU |
| 2nd Author's Affiliation | Department of Electrical Engineering, Science University of TOKYO |
| 3rd Author's Name | Toshinobu KANEKO |
| 3rd Author's Affiliation | Department of Electrical Engineering, Science University of TOKYO |
| Date | 1998/5/15 |
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| Volume (vol) | vol.98 |
| Number (no) | 48 |
| Page | pp.pp.- |
| #Pages | 8 |
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