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| Presentation | 2021-07-20 14:50 Differential Path Search Using MILP against ForkSkinny Masaya Okazaki (Nagoya Univ.), Yu Sasaki (NTT), Tetsu Iwata (Nagoya Univ.)  ISEC2021-35 SITE2021-29 BioX2021-36 HWS2021-35 ICSS2021-40 EMM2021-40 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | ForkSkinny is a symmetric key primitive desgined based on a tweakable block cipher called SKINNY, and it outputs two ciphertext blocks. In this paper, we evaluate the security against differential attacks when we take one of the ciphertext blocks as input, and the other one as output. In ForkSkinny, there is a forking procedure of the internal state, where two consecutive Sboxes are used without the secret key. We point out that this part can be seen as a single Sbox. We use MILP to evaluate the number of active Sboxes and the maximum differential path probability, and show their relation to the number of rounds. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | SKINNY / ForkSkinny / MILP / differential path search / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 118, ISEC2021-35, pp. 153-160, July 2021. | |
| Paper # | ISEC2021-35 | |
| Date of Issue | 2021-07-12 (ISEC, SITE, BioX, HWS, ICSS, EMM) | |
| ISSN | 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 | ISEC2021-35 SITE2021-29 BioX2021-36 HWS2021-35 ICSS2021-40 EMM2021-40 |
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| Conference Information | |
| Committee | BioX ISEC SITE ICSS EMM HWS IPSJ-CSEC IPSJ-SPT |
| Conference Date | 2021-07-19 - 2021-07-20 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | ISEC |
| Conference Code | 2021-07-BioX-ISEC-SITE-ICSS-EMM-HWS-CSEC-SPT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Differential Path Search Using MILP against ForkSkinny |
| Sub Title (in English) | |
| Keyword(1) | SKINNY |
| Keyword(2) | ForkSkinny |
| Keyword(3) | MILP |
| Keyword(4) | differential path search |
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| 1st Author's Name | Masaya Okazaki |
| 1st Author's Affiliation | Nagoya University (Nagoya Univ.) |
| 2nd Author's Name | Yu Sasaki |
| 2nd Author's Affiliation | NTT (NTT) |
| 3rd Author's Name | Tetsu Iwata |
| 3rd Author's Affiliation | Nagoya University (Nagoya Univ.) |
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| Speaker | Author-1 |
| Date Time | 2021-07-20 14:50:00 |
| Presentation Time | 25 minutes |
| Registration for | ISEC |
| Paper # | ISEC2021-35, SITE2021-29, BioX2021-36, HWS2021-35, ICSS2021-40, EMM2021-40 |
| Volume (vol) | vol.121 |
| Number (no) | no.118(ISEC), no.119(SITE), no.120(BioX), no.121(HWS), no.122(ICSS), no.123(EMM) |
| Page | pp.153-160 |
| #Pages | 8 |
| Date of Issue | 2021-07-12 (ISEC, SITE, BioX, HWS, ICSS, EMM) |
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