| Presentation | 2000/7/18 A Study on the Upper Bounds of the Maximum Differential/Linear Characteristic Probabilities of Feistel ciphers with SPN round function Masayuki KANDA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper studies the upper bounds of the maximum differential/linear characteristic probabilities of Feistel ciphers with SPN round function. In the same way as SPN ciphers, we consider the minimum number of differentially/linearly active s-boxes, which are proportion to the upper bounds of these probabilities, in order to evaluate the security against differential/linear attacks. The purpose of this work is to clarify the minimum numbers of active s-boxes in some consecutive rounds of Feistel ciphers, i.e., in three, four, six, eight, and twelve consecutive rounds, using differential/linear branch numbers β_d, β_l. As a result, we clarified that the minimum number of differentially (resp. linearly) active s-boxes are 2, β_d(β_l), β_d+2(β_l+2), 2β_d+1(2β_l+1), and 3β_d+1(3β_l+1), respectively. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Block cipher / Design strategy / Differential attack / Linear attack / Characteristic probability / Security measure |
| Paper # | ISEC2000-37 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2000/7/18(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) | A Study on the Upper Bounds of the Maximum Differential/Linear Characteristic Probabilities of Feistel ciphers with SPN round function |
| Sub Title (in English) | |
| Keyword(1) | Block cipher |
| Keyword(2) | Design strategy |
| Keyword(3) | Differential attack |
| Keyword(4) | Linear attack |
| Keyword(5) | Characteristic probability |
| Keyword(6) | Security measure |
| 1st Author's Name | Masayuki KANDA |
| 1st Author's Affiliation | NTT Information Sharing Platform Laboratories() |
| Date | 2000/7/18 |
| Paper # | ISEC2000-37 |
| Volume (vol) | vol.100 |
| Number (no) | 213 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |