| Presentation | 1994/5/20 Linear Cryptanalysis of FEAL-8(Experimentation Report) Kazumaro Aoki, Kazuo Ohta, Shiho Araki, Mitsuru Matsui, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents experimental results to estimate the security of FEAL-8 against Linear Cryptanalysis.The following points are important in Linear Cryptanalysis to reduce the processing amount and the memory size for the attack:1)the deviation rate of the linear expression,and 2)the number of effective key bits and effective text bits.We have found 7-round linear expressions with the deviation rate of 1.149 x 2^-8> which is larger than that of Biham′s which is 2^-11>,and have reduced t he number of effective bits for WS feasible implementation by careful observation.We have confirmed that the entire subkeys used in FEAL-8 can be derived from 2^25> known plaintexts with a success rate over 70%,and from 2^26> known plaintexts with a success rate about 100%.Both attacks take about 1 hour using a WS(SPARCstation 10 Model 30). |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Code Break / Linear Cryptanalysis / Maximum Likelihood Method / Linear Expression / FEAL |
| Paper # | ISEC94-6 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 1994/5/20(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 | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Linear Cryptanalysis of FEAL-8(Experimentation Report) |
| Sub Title (in English) | |
| Keyword(1) | Code Break |
| Keyword(2) | Linear Cryptanalysis |
| Keyword(3) | Maximum Likelihood Method |
| Keyword(4) | Linear Expression |
| Keyword(5) | FEAL |
| 1st Author's Name | Kazumaro Aoki |
| 1st Author's Affiliation | Department of Mathematics,School of Science and Engineering,Waseda University() |
| 2nd Author's Name | Kazuo Ohta |
| 2nd Author's Affiliation | NTT Network Information System Laboratories |
| 3rd Author's Name | Shiho Araki |
| 3rd Author's Affiliation | NTT Network Information System Laboratories |
| 4th Author's Name | Mitsuru Matsui |
| 4th Author's Affiliation | Computer & Information Systems Laboratory,Mitsubishi Electric Corporation |
| Date | 1994/5/20 |
| Paper # | ISEC94-6 |
| Volume (vol) | vol.94 |
| Number (no) | 56 |
| Page | pp.pp.- |
| #Pages | 14 |
| Date of Issue | |