| Presentation | 2009-11-12 Constructing New Differential Paths and Algebraic Cryptanalysis for Full-SHA-1 Makoto SUGITA, Mitsuru KAWAZOE, Hideki IMAI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Since the cryptanalysis for SHA-1 was proposed [19], many improvements have been proposed. Recently a new result was proposed which claims that it can compute collisions in 2^<52> SHA-1 computation, though it includes some problems [10]. Based on their attack, We had reconstructed their method algebraically using Grobner basis based formulation. In this formulation, we propose a new method to construct differentials and sufficient conditions automatically from disturbance vector and also propose some more new techniques: round-wise semi-neutral bits, global boomerang and adaptive amplified boomerang techniques. Using these new methods, we obtained sufficient conditions of full SHA-1 based on the new disturbance vector offered in [10] and succeeded in implementation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | SHA-1 / Grobner basis / amplified boomerang attack |
| Paper # | ISEC2009-51,LOIS2009-40 |
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| Conference Information | |
| Committee | LOIS |
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| Conference Date | 2009/11/5(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Life Intelligence and Office Information Systems (LOIS) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Constructing New Differential Paths and Algebraic Cryptanalysis for Full-SHA-1 |
| Sub Title (in English) | |
| Keyword(1) | SHA-1 |
| Keyword(2) | Grobner basis |
| Keyword(3) | amplified boomerang attack |
| 1st Author's Name | Makoto SUGITA |
| 1st Author's Affiliation | Wireless Systems Innovation Laboratories, NTT Network Innovation Laboratories:National Institute of Advanced Industrial Science and Technology (AIST)() |
| 2nd Author's Name | Mitsuru KAWAZOE |
| 2nd Author's Affiliation | Faculty of Liberal Arts and Sciences Osaka Prefecture University |
| 3rd Author's Name | Hideki IMAI |
| 3rd Author's Affiliation | National Institute of Advanced Industrial Science and Technology (AIST):Department of Electrical, Electronic and Communication Engineering Faculty of Science and Engineering, Chuo University |
| Date | 2009-11-12 |
| Paper # | ISEC2009-51,LOIS2009-40 |
| Volume (vol) | vol.109 |
| Number (no) | 272 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |