Paper Abstract and Keywords |
Presentation |
2013-11-29 13:05
A Lossy Identification Scheme from the Subgroup Decision Shingo Hasegawa, Shuji Isobe (Tohoku Univ.) ISEC2013-68 LOIS2013-34 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Lossy identification schemes are used to construct tightly secure signature schemes via the Fiat-Shamir heuristic in the random oracle model.
Several lossy identification schemes are instantiated by using many cryptographic assumptions, respectively.
In this paper, we propose new instantiations of lossy identification schemes.
We first construct a variant of the Schnorr's identification scheme,
and show its lossiness under
a slight variant of the subgroup decision assumption,
what we call the generalized subgroup decision assumption.
We also construct another lossy identification scheme which is based on the DCR assumption.
Our DCR-based scheme has an advantage relative to the known DCR-based scheme
since our scheme needs no modular exponentiation in the response phase. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
lossy identification schemes / Fiat-Shamir heuristic / subgroup decision assumption / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 113, no. 326, ISEC2013-68, pp. 57-63, Nov. 2013. |
Paper # |
ISEC2013-68 |
Date of Issue |
2013-11-21 (ISEC, LOIS) |
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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ISEC2013-68 LOIS2013-34 |
Conference Information |
Committee |
ISEC LOIS |
Conference Date |
2013-11-28 - 2013-11-29 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Tohoku Univ. |
Topics (in Japanese) |
(See Japanese page) |
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Paper Information |
Registration To |
ISEC |
Conference Code |
2013-11-ISEC-LOIS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A Lossy Identification Scheme from the Subgroup Decision |
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lossy identification schemes |
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Fiat-Shamir heuristic |
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subgroup decision assumption |
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1st Author's Name |
Shingo Hasegawa |
1st Author's Affiliation |
Tohoku University (Tohoku Univ.) |
2nd Author's Name |
Shuji Isobe |
2nd Author's Affiliation |
Tohoku University (Tohoku Univ.) |
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Speaker |
Author-1 |
Date Time |
2013-11-29 13:05:00 |
Presentation Time |
25 minutes |
Registration for |
ISEC |
Paper # |
ISEC2013-68, LOIS2013-34 |
Volume (vol) |
vol.113 |
Number (no) |
no.326(ISEC), no.327(LOIS) |
Page |
pp.57-63 |
#Pages |
7 |
Date of Issue |
2013-11-21 (ISEC, LOIS) |
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