Paper Abstract and Keywords |
Presentation |
2010-09-10 14:15
On the Extension of Rank Attacks to MPKC Masahito Gotaishi, Shigeo Tsujii (Chuo Univ.) ISEC2010-44 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
A variant of Rank Attack which is applicable to the Complementary STS is discussed. The Complementary
STS is a variant of Stepwise Triangular System, in which two STSs are combined together in order to make
the rank of each step identical and subsequently to make the system resistant to both Rank Attacks and Gr¨obner Bases Attack. However, the system has to contain more variables than equations, in order to contain the trapdoor structure. This ”degree of freedom” might give attackers some chance to forge signatures.
Therefore the structure of including check equations is proposed, which in combination with the Complementary STS constitutes Enhanced STS. Here it is pointed out that Rank Attacks are applicable to complementary STS, the system of equations where all polynomials have identical rank in the central map. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Multivariate Public Key Cryptosystem / Digital Signature / Sequential Solution method / Stepwise Triangular Scheme / Oil and Vinegar Signature / / / |
Reference Info. |
IEICE Tech. Rep., vol. 110, no. 200, ISEC2010-44, pp. 35-40, Sept. 2010. |
Paper # |
ISEC2010-44 |
Date of Issue |
2010-09-03 (ISEC) |
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) |
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ISEC2010-44 |
Conference Information |
Committee |
ISEC |
Conference Date |
2010-09-10 - 2010-09-10 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Kikai-Shinko-Kaikan Bldg. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
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Paper Information |
Registration To |
ISEC |
Conference Code |
2010-09-ISEC |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
On the Extension of Rank Attacks to MPKC |
Sub Title (in English) |
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Keyword(1) |
Multivariate Public Key Cryptosystem |
Keyword(2) |
Digital Signature |
Keyword(3) |
Sequential Solution method |
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Stepwise Triangular Scheme |
Keyword(5) |
Oil and Vinegar Signature |
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1st Author's Name |
Masahito Gotaishi |
1st Author's Affiliation |
Chuo University (Chuo Univ.) |
2nd Author's Name |
Shigeo Tsujii |
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Chuo University (Chuo Univ.) |
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Speaker |
Author-2 |
Date Time |
2010-09-10 14:15:00 |
Presentation Time |
25 minutes |
Registration for |
ISEC |
Paper # |
ISEC2010-44 |
Volume (vol) |
vol.110 |
Number (no) |
no.200 |
Page |
pp.35-40 |
#Pages |
6 |
Date of Issue |
2010-09-03 (ISEC) |
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