| Presentation | 2003/3/20 A Distinguishing Attack of SNOW 2.0 with Linear Masking Method Dai WATANABE, Alex BIRYUKOV, Christophe DE CANNIERE, Bart PRENEEL, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper we present the application of linear (masking) attack to SNOW 2.0 stream cipher. SNOW 2.0 was developed by Johansson and Ekdahl in 2002, as a modified version of SNOW 1.0. The key length of SNOW 2.0 is 128 bits or 256 bits, so that the bias of the output should be less than 2^<-128>. However, the attack with linear masking method can distinguish the output of SNOW 2.0 from a truly random bit sequence by observing 2^<205> rounds outputs (2^<210> bits). |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Stream cipher / SNOW / Linear masking method |
| Paper # | IT2002-81,ISEC2002-139,SST2002-187,ITS2002-164 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2003/3/20(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 | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Distinguishing Attack of SNOW 2.0 with Linear Masking Method |
| Sub Title (in English) | |
| Keyword(1) | Stream cipher |
| Keyword(2) | SNOW |
| Keyword(3) | Linear masking method |
| 1st Author's Name | Dai WATANABE |
| 1st Author's Affiliation | Systems Development Laboratory, Hitachi, Ltd.() |
| 2nd Author's Name | Alex BIRYUKOV |
| 2nd Author's Affiliation | Katholieke Universiteit Leuven, Dept. Electrical Engineering -ESAT |
| 3rd Author's Name | Christophe DE CANNIERE |
| 3rd Author's Affiliation | Katholieke Universiteit Leuven, Dept. Electrical Engineering-ESAT |
| 4th Author's Name | Bart PRENEEL |
| 4th Author's Affiliation | Katholieke Universiteit Leuven, Dept. Electrical Engineering-ESAT |
| Date | 2003/3/20 |
| Paper # | IT2002-81,ISEC2002-139,SST2002-187,ITS2002-164 |
| Volume (vol) | vol.102 |
| Number (no) | 744 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |