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Paper Abstract and Keywords
Presentation 2009-11-13 09:00
Proposal on Multivariate Public Key Signature Scheme Applying the STS cryptosystem
Shigeo Tsujii, Masahito Gotaishi, Kohtaro Tadaki (Chuo Univ.) ISEC2009-59 LOIS2009-48
Abstract (in Japanese) (See Japanese page) 
(in English) New signature scheme based on Stepwise Triangular Scheme (STS), which is one of the basic trapdoors of Multivariate Public Key Cryptosystem (MPKC), is proposed.
This new signature scheme includes new random variables in each layer, thereby making the rank of each polynomial equal. Therefore the new scheme is resistant to the rank attack.
It is confirmed by experiment that the new scheme is secure against other algebraic attacks such as Groebner bases attack. In addition, it works more efficiently than existing MPKC signatures.
Keyword (in Japanese) (See Japanese page) 
(in English) post-quantum cryptography / public key cryptosystem / multivariate public key cryptosystem / digital signature scheme / STS / multivariate polynomial / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 271, ISEC2009-59, pp. 55-60, Nov. 2009.
Paper # ISEC2009-59 
Date of Issue 2009-11-05 (ISEC, LOIS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF ISEC2009-59 LOIS2009-48

Conference Information
Committee ISEC LOIS  
Conference Date 2009-11-12 - 2009-11-13 
Place (in Japanese) (See Japanese page) 
Place (in English) Gifu Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2009-11-ISEC-LOIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Proposal on Multivariate Public Key Signature Scheme Applying the STS cryptosystem 
Sub Title (in English)  
Keyword(1) post-quantum cryptography  
Keyword(2) public key cryptosystem  
Keyword(3) multivariate public key cryptosystem  
Keyword(4) digital signature scheme  
Keyword(5) STS  
Keyword(6) multivariate polynomial  
1st Author's Name Shigeo Tsujii  
1st Author's Affiliation Chuo University (Chuo Univ.)
2nd Author's Name Masahito Gotaishi  
2nd Author's Affiliation Chuo University (Chuo Univ.)
3rd Author's Name Kohtaro Tadaki  
3rd Author's Affiliation Chuo University (Chuo Univ.)
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Date Time 2009-11-13 09:00:00 
Presentation Time 25 
Registration for ISEC 
Paper # IEICE-ISEC2009-59,IEICE-LOIS2009-48 
Volume (vol) IEICE-109 
Number (no) no.271(ISEC), no.272(LOIS) 
Page pp.55-60 
#Pages IEICE-6 
Date of Issue IEICE-ISEC-2009-11-05,IEICE-LOIS-2009-11-05 

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