| Presentation | 2011-05-13 S-box Design with Variable Operation Parameters Eiji FUKUTOMI, Masahiro FUKUMOTO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In recent years, the common key cryptosystems become insecure by the increasing of computational performance and the developing efficient cryptanalysis. To improve security, new cryptosystems which has the extended secret key are mainly used. Meanwhile, some cryptosystems which the cipher algorithm is changed by parameter have propsed. In this research, the S-box has some parameters is proposed. Proposed S-box is defined as a combination of the power function, the affine transform and the irreducible polynomial in Galois field. Moreover, each users can be make the different S-box easily by changing parameters. It is considered that the security of an existing cryptosystem can be increased by embedded proposed S-box. However, vulnerable S-box against the differential cryptanalysis and the linear cryptanalysis may be generated by some parameters. Therefore, proposed S-box is evaluated and is restrict parameters to guarantee the upper limit of the differential probability and the linear probability. As a result, the average probability of candidate S-box is lower than the S-box of AES. Next, as the performance evaluation of the randomizer of AES embedded proposed S-box, the bit count of the changed output is calculated when the one bit of the input or the key is changed. Finally, the security by a change in the erreducible polynomial is evaluated. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Common key cryptosystem / S-box / Evaluation / Differential probability / Linear probability |
| Paper # | ISEC2011-7 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2011/5/6(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) | S-box Design with Variable Operation Parameters |
| Sub Title (in English) | |
| Keyword(1) | Common key cryptosystem |
| Keyword(2) | S-box |
| Keyword(3) | Evaluation |
| Keyword(4) | Differential probability |
| Keyword(5) | Linear probability |
| 1st Author's Name | Eiji FUKUTOMI |
| 1st Author's Affiliation | School of Information, Kochi University of Technology() |
| 2nd Author's Name | Masahiro FUKUMOTO |
| 2nd Author's Affiliation | School of Information, Kochi University of Technology |
| Date | 2011-05-13 |
| Paper # | ISEC2011-7 |
| Volume (vol) | vol.111 |
| Number (no) | 34 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |