| Presentation | 1998/12/12 Towards Secure and Fast Hash Functions Takashi SATOH, Mio HAGA, Kaoru KUROSAWA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We analyze the security of iterated 2m-bit output hash functions with rate 1 whose round function uses a m-bit block cipher with a 2m-bit key. We first show a preimage attack with O (2^m) complexity on Yi and Lam's hash function of this type. Next, it si shown that a very wide class of such functions is less secure than MDC-2. More precisely, we prove that there exist a preimage attack and a 2nd preimage attack with O (2^m) complexity and a collision attack with O (2^<3m/4> complexity, respectively. Finally, we suggest a class of double block length hash functions which seem to be as secure as MDC-2. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | hash functions / block ciphers / cryptanalysis / meet-in-the middle attack |
| Paper # | ISEC98-67 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 1998/12/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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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) | Towards Secure and Fast Hash Functions |
| Sub Title (in English) | |
| Keyword(1) | hash functions |
| Keyword(2) | block ciphers |
| Keyword(3) | cryptanalysis |
| Keyword(4) | meet-in-the middle attack |
| 1st Author's Name | Takashi SATOH |
| 1st Author's Affiliation | Faculty of Engineering, Tokyo Institute of Technology() |
| 2nd Author's Name | Mio HAGA |
| 2nd Author's Affiliation | Faculty of Engineering, Tokyo Institute of Technology |
| 3rd Author's Name | Kaoru KUROSAWA |
| 3rd Author's Affiliation | Faculty of Engineering, Tokyo Institute of Technology |
| Date | 1998/12/12 |
| Paper # | ISEC98-67 |
| Volume (vol) | vol.98 |
| Number (no) | 466 |
| Page | pp.pp.- |
| #Pages | 11 |
| Date of Issue | |