| Presentation | 2000/7/18 ISEC2000-38 Cryptanalysis of Twofish (II) Shiho Moriai, Yiqun Lisa Yin, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We present truncated differential cryptanalysis of the block cipher Twofish, which is one of the five finalists for the Advanced Encryption Standard(AES). From our experimental results, we found a 16-round truncated differential with probability of about 2^<-57.3>. One can expect to get one good pair following the truncated differential from 2^<51> chosen plaintexts, and there are a total of 2^<77> such good pairs. We also found 5-round truncated differentials which can be useful in distinguishing Twofish reduced to 5 rounds from a random permutation. This was considered to be an open problem by Knudsen. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | cryptanalysis / differential cryptanalysis / truncated differential / Twofish / AES |
| Paper # | ISEC2000-38 |
| Date of Issue |
| 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) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| 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) | ISEC2000-38 Cryptanalysis of Twofish (II) |
| Sub Title (in English) | |
| Keyword(1) | cryptanalysis |
| Keyword(2) | differential cryptanalysis |
| Keyword(3) | truncated differential |
| Keyword(4) | Twofish |
| Keyword(5) | AES |
| 1st Author's Name | Shiho Moriai |
| 1st Author's Affiliation | NTT Information Sharing Platform Laboratories() |
| 2nd Author's Name | Yiqun Lisa Yin |
| 2nd Author's Affiliation | NTT Multimedia Communications Laboratories |
| Date | 2000/7/18 |
| Paper # | ISEC2000-38 |
| Volume (vol) | vol.100 |
| Number (no) | 213 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |