| Presentation | 2006-12-13 A Fixed IV Value Independent Key Recovery Attack against WEP Yoshiaki FUJIKAWA, Toshihiro OHIGASHI, Hidenori KUWAKDO, Masakatu MORII, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Key recovery attacks against WEP based on weak IVs, which leak information of a private key, have been shown. Since each previous key recovery attacks use a specific set of weak IVs, existing WEP usually uses IVs except for such weak IVs. Notice that this countermeasure is effective only when the set of weak IVs does not depend on the private key. In this paper, we propose a key recovery attack such that the set of weak IVs independent of value of IV and depends on outputs of WEP. By the simulation, we show that our attack more efficiently recovers a private key than brute force attack and there is no secure IV for all private keys, if all weak IVs used in all privious key recovery attacks are removed. In addition, there are private keys to ratio of 2^<-30> which recovered in complexity of 2^<40> by our attack. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | WEP / key recovery attack |
| Paper # | ISEC2006-113 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2006/12/6(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 Fixed IV Value Independent Key Recovery Attack against WEP |
| Sub Title (in English) | |
| Keyword(1) | WEP |
| Keyword(2) | key recovery attack |
| 1st Author's Name | Yoshiaki FUJIKAWA |
| 1st Author's Affiliation | Graduate School of Science and Technology, Kobe University() |
| 2nd Author's Name | Toshihiro OHIGASHI |
| 2nd Author's Affiliation | Graduate School of Science and Technology, Kobe University |
| 3rd Author's Name | Hidenori KUWAKDO |
| 3rd Author's Affiliation | Faculty of Engineering, Kobe University |
| 4th Author's Name | Masakatu MORII |
| 4th Author's Affiliation | Faculty of Engineering, Kobe University |
| Date | 2006-12-13 |
| Paper # | ISEC2006-113 |
| Volume (vol) | vol.106 |
| Number (no) | 411 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |