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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 15 of 15  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
ISEC, IT, WBS 2015-03-02
13:40
Fukuoka The University of Kitakyushu A Construction of Attribute-based Aggregate Signatures
Ryo Takahashi, Shingo Hasegawa, Shuji Isobe, Eisuke Koizumi, Hiroki Shizuya (Tohoku Univ.) IT2014-66 ISEC2014-79 WBS2014-58
Hohenberger, Sahai, Waters proposed the first identity-based aggregate signature which admits unrestricted aggregation b... [more] IT2014-66 ISEC2014-79 WBS2014-58
pp.25-32
ISEC, IT, WBS 2015-03-02
14:05
Fukuoka The University of Kitakyushu On the Limit of Security Proof for Homomorphic Encryption
Daiki Takahashi, Shingo Hasegawa, Shuji Isobe, Eisuke Koizumi, Hiroki Shizuya (Tohoku Univ.) IT2014-67 ISEC2014-80 WBS2014-59
In this paper, we explore on the limitation of security proofs for homomorphic encryptions.
We consider the computation... [more]
IT2014-67 ISEC2014-80 WBS2014-59
pp.33-38
ISEC, LOIS 2013-11-28
15:00
Miyagi Tohoku Univ. A Note on Attacks against Card-Based Cryptographic Protocols
Takaaki Mizuki, Hiroki Shizuya (Tohoku Univ.) ISEC2013-62 LOIS2013-28
It has been known that Secure Multi-Party Computations can be conducted using a number of black and red physical cards (... [more] ISEC2013-62 LOIS2013-28
pp.21-28
IE, MVE 2012-03-12
- 2012-03-13
Toyama Toyama University Easy creation of chalk board lecture video content for learning and teacher reflection
Satoshi Shimada, Suguru Higashino (NTT), Fumiko Konno, Takashi Mitsuishi, Yoshinori Hayakawa, Hiroki Shizuya (Tohoku univ.) IE2011-170 MVE2011-132
This paper proposes a method to create a lecture video content easily from chalk and talk lecture video captured by a fi... [more] IE2011-170 MVE2011-132
pp.217-222
ISEC, LOIS 2011-11-15
13:25
Osaka Osaka Electro-Communication University SLP separates the strong RSA assumption from the DDH assumption
Masayuki Fukumitsu, Shingo Hasegawa, Shuji Isobe, Eisuke Koizumi, Hiroki Shizuya (Tohoku Univ.) ISEC2011-55 LOIS2011-49
Although we have many computational reductions among the cryptographic primitives, little is known about the relationshi... [more] ISEC2011-55 LOIS2011-49
pp.141-148
ISEC, LOIS 2011-11-15
13:50
Osaka Osaka Electro-Communication University On the Little Knowledge Interactive Proof
Jun-ya Iwazaki, Shingo Hasegawa, Shuji Isobe, Eisuke Koizumi, Hiroki Shizuya (Tohoku Univ.) ISEC2011-56 LOIS2011-50
We propose the notion of little knowledgeness in interactive proof systems,
as a notion alternative to the zero knowle... [more]
ISEC2011-56 LOIS2011-50
pp.149-154
ISEC, IT, WBS 2011-03-04
14:55
Osaka Osaka University On the self-reducibility and the many-one-like reducibilities for multi-valued functions
Ji-Won Huh, Shuji Isobe, Eisuke Koizumi, Hiroki Shizuya (Tohoku Univ.) IT2010-127 ISEC2010-131 WBS2010-106
In this paper, we investigate a relationship between the self-reducibility and the many-one-like reducibilities for mult... [more] IT2010-127 ISEC2010-131 WBS2010-106
pp.389-394
ISEC, IPSJ-CSEC, SITE, ICSS [detail] 2010-07-02
14:40
Aomori Hirosaki University On the Relationship between Recognizing Languages and Computing Functions
Shingo Hasegawa, Shuji Isobe, Hiroki Shizuya (Tohoku Univ.) ISEC2010-37 SITE2010-33 ICSS2010-43
We explore the relationship between the class NP and the function class NPMVg, the set of witness functions for language... [more] ISEC2010-37 SITE2010-33 ICSS2010-43
pp.202-208
WBS, IT, ISEC 2009-03-10
15:40
Hokkaido Hakodate Mirai Univ. On the Computational Complexity of the Discrete Logarithm Problem over Algebraic Tori
Yuji Nishigaki, Shingo Hasegawa, Shuji Isobe, Eisuke Koizumi, Masao Sakai, Hiroki Shizuya (Tohoku Univ.) IT2008-127 ISEC2008-185 WBS2008-140
In this paper we investigate the computational complexity of the discrete logarithm problem over algebraic tori (TDLP).
... [more]
IT2008-127 ISEC2008-185 WBS2008-140
pp.545-550
ISEC, IT, WBS 2008-02-29
14:55
Tokyo   A Construction of Partially Blind Signatures with Traceability
Tsunemichi Chiba (Mitsubishi Electric CC), Eikoh Chida (Ichinoseki NCT), Masahiro Mambo (Univ. of Tsukuba), Hiroki Shizuya (Tohoku Univ.) IT2007-59 ISEC2007-156 WBS2007-90
In the paper we propose
a construction of partially blind signatures with traceability.
The proposed scheme has two ve... [more]
IT2007-59 ISEC2007-156 WBS2007-90
pp.73-78
IT, ISEC, WBS 2007-03-16
14:50
Gunma Gunma Univ. (Kiryu Campus) A technique for making PKI robust
Masaki Yoshida, Shingo Hasegawa, Shuji Isobe, Eisuke Koizumi, Masao Sakai, Hiroki Shizuya (Tohoku Univ.), Yuichi Futa, Manabu Maeda (Matsushita)
We study a strategy for recovering a PKI system without reconstructing the whole one when the trust anchor has been brok... [more] IT2006-105 ISEC2006-160 WBS2006-102
pp.119-124
IT, ISEC, WBS 2007-03-16
15:15
Gunma Gunma Univ. (Kiryu Campus) A Digital Watermarking for Audio Information: Randomized Method and Beat-Frequency Method
Shinya Miura, Masao Sakai, Hiroki Shizuya (Tohoku Univ.)
In this paper, we propose a randomized method and a beat-frequency method for an audio digital watermarking.
The random... [more]
IT2006-106 ISEC2006-161 WBS2006-103
pp.125-130
WBS, IT, ISEC 2006-03-16
16:45
Aichi Nagoya Univ. Complexity of Diffie-Hellman problems and its variants
Kazunari Manabe, Shuji Isobe, Eisuke Koizumi, Masao Sakai, Hiroki Shizuya (Tohoku Univ.)
 [more] IT2005-82 ISEC2005-139 WBS2005-96
pp.105-110
WBS, IT, ISEC 2006-03-16
17:10
Aichi Nagoya Univ. On the Complexity of the Closest Vector Problem for Regular Lattices
Shingo Hasegawa, Shuji Isobe, Hiroki Shizuya (Tohoku Univ.), Yuichi Futa, Motoji Ohmori (Matsushita Elec. Ind.)
 [more] IT2005-83 ISEC2005-140 WBS2005-97
pp.111-115
WBS, IT, ISEC 2006-03-16
17:35
Aichi Nagoya Univ. Complexity of abstract DDoS attack problems
Daisuke Yokota, Shuji Isobe, Eisuke Koizumi, Masao Sakai, Hiroki Shizuya (Tohoku Univ.)
 [more] IT2005-84 ISEC2005-141 WBS2005-98
pp.117-121
 Results 1 - 15 of 15  /   
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