| Presentation | 2009-07-03 A Study on Stream-Cipher-Based Hash Functions Yuto NAKANO, Jun KURIHARA, Shinsaku KIYOMOTO, Toshiaki TANAKA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Hash functions using stream ciphers as components perform fast on a variety of platforms. However, stream-cipher-based hash functions (SCHs) have not been studied sufficiently yet. In this paper, we present a model of SCHs consisting of two parts: a pre-computation phase and a stream cipher phase. We apply this model to existing broken SCHs, Abacus and Boole, and analyze the vulnerabilities corresponding to existing attacks for each part of our model. By applying our model to these algorithms, weak parts in the algorithms are revealed, and we show that these vulnerabilities can be removed by minor modifications to each part. Furthermore, we clarify the requirements for the pre-computation phase and the stream cipher phase to realize secure SCHs. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | hash function / stream cipher / sponge function / Abacus / Boole |
| Paper # | ISEC2009-29,SITE2009-21,ICSS2009-43 |
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| Conference Information | |
| Committee | SITE |
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| Conference Date | 2009/6/25(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Social Implications of Technology and Information Ethics (SITE) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Stream-Cipher-Based Hash Functions |
| Sub Title (in English) | |
| Keyword(1) | hash function |
| Keyword(2) | stream cipher |
| Keyword(3) | sponge function |
| Keyword(4) | Abacus |
| Keyword(5) | Boole |
| 1st Author's Name | Yuto NAKANO |
| 1st Author's Affiliation | KDDI R & D Laboratories Inc.() |
| 2nd Author's Name | Jun KURIHARA |
| 2nd Author's Affiliation | KDDI R & D Laboratories Inc. |
| 3rd Author's Name | Shinsaku KIYOMOTO |
| 3rd Author's Affiliation | KDDI R & D Laboratories Inc. |
| 4th Author's Name | Toshiaki TANAKA |
| 4th Author's Affiliation | KDDI R & D Laboratories Inc. |
| Date | 2009-07-03 |
| Paper # | ISEC2009-29,SITE2009-21,ICSS2009-43 |
| Volume (vol) | vol.109 |
| Number (no) | 114 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |