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| Presentation | 2010-03-05 15:45 A Study on Key Estimation Attacks to Stream Cipher based on Statistical Decision Theory Ety Yudiasticha (Waseda Univ.), Kazuhiko Minematsu (NEC), Toshiyasu Matsushima (Waseda Univ.)  IT2009-114 ISEC2009-122 WBS2009-93 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This study looks at stream cipher that use nonlinear combination generator's output, which has multi-LFSR and a nonlinear function as generator's component, as random sequence for encryption and decryption. Key estimation attack is a kind of attack to this stream cipher which estimate a secret key employ given random sequence. Study on previous key estimation attacks have variety way on valuation method that makes difficult to have an unified valuation of stream cipher system's safeness. This study reformulates key estimation attack to this stream cipher problem based on statistical decision theory. Under reformulation,this study develops the expression for most appropriate key estimation attack based on Bayesian standard that can be an unified valuation standard of stream cipher's safeness. Furthermore, consider the position of previous attack algorithm from most appropriate key estimation attack's point of view. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | stream cipher / fast correlation attack / nonlinear combination generator / known plaintext attack / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 445, ISEC2009-122, pp. 281-287, March 2010. | |
| Paper # | ISEC2009-122 | |
| Date of Issue | 2010-02-25 (IT, ISEC, WBS) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | IT2009-114 ISEC2009-122 WBS2009-93 |
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| Conference Information | |
| Committee | IT ISEC WBS |
| Conference Date | 2010-03-04 - 2010-03-05 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagano-Engineering Campus, Shinshu University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | ISEC |
| Conference Code | 2010-03-IT-ISEC-WBS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Key Estimation Attacks to Stream Cipher based on Statistical Decision Theory |
| Sub Title (in English) | |
| Keyword(1) | stream cipher |
| Keyword(2) | fast correlation attack |
| Keyword(3) | nonlinear combination generator |
| Keyword(4) | known plaintext attack |
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| 1st Author's Name | Ety Yudiasticha |
| 1st Author's Affiliation | Waseda University (Waseda Univ.) |
| 2nd Author's Name | Kazuhiko Minematsu |
| 2nd Author's Affiliation | NEC Corporation (NEC) |
| 3rd Author's Name | Toshiyasu Matsushima |
| 3rd Author's Affiliation | Waseda University (Waseda Univ.) |
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| Speaker | Author-1 |
| Date Time | 2010-03-05 15:45:00 |
| Presentation Time | 25 minutes |
| Registration for | ISEC |
| Paper # | IT2009-114, ISEC2009-122, WBS2009-93 |
| Volume (vol) | vol.109 |
| Number (no) | no.444(IT), no.445(ISEC), no.446(WBS) |
| Page | pp.281-287 |
| #Pages | 7 |
| Date of Issue | 2010-02-25 (IT, ISEC, WBS) |
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