Committee 
Date Time 
Place 
Paper Title / Authors 
Abstract 
Paper # 
IT, ISEC, RCC, WBS 
20220310 09:40 
Online 
Online 
Construction GKW Transformation for Arithmetic Circuits Kotaro Chinen, Hiroaki Anada (Univ. Nagasaki) IT202188 ISEC202153 WBS202156 RCC202163 
Garbled ciruits is a cryptographic framework for secure twoparty computation introduced by Yao. Yao's protocol is a met... [more] 
IT202188 ISEC202153 WBS202156 RCC202163 pp.3137 
IT, ISEC, RCC, WBS 
20220310 10:05 
Online 
Online 
Towards Group Signature Scheme with Equality Test for Signers Kyoya Anzai, Hiroaki Anada (Univ. Nagasaki) IT202189 ISEC202154 WBS202157 RCC202164 
In this technical report, we discuss a group signature scheme with equality test for signers. This scheme has a func... [more] 
IT202189 ISEC202154 WBS202157 RCC202164 pp.3841 
WBS, IT, ISEC 
20210305 11:45 
Online 
Online 
A Proposal of Decentralized Multiauthority Traceable Anonymous Credential Scheme and Its Generic Construction Hiroaki Anada (Univ. of Nagasaki) IT2020149 ISEC202079 WBS202068 
We propose an anonymous credential scheme and its generic construction, where there are independent decentralized multi... [more] 
IT2020149 ISEC202079 WBS202068 pp.225231 
ISEC 
20200520 14:40 
Online 
Online 
Making Variance of Mining Time Smaller for Computational Problems Based on Hash Functions
 Serial Concatenation and Parallel Concatenation  Hiroaki Anada (Univ. Nagasaki), Kouichi Sakurai (Kyushu Univ.) ISEC20209 
In Bitcoin, the computational problem which miners should solve is
an equation described in the term of a hash functio... [more] 
ISEC20209 pp.3340 
ISEC, SITE, ICSS, EMM, HWS, BioX, IPSJCSEC, IPSJSPT [detail] 
20190724 14:35 
Kochi 
Kochi University of Technology 
A Method for KeyUpdatable Symmetric Searchable Encryption Natsume Matsuzaki, Hiroaki Anada (Univ. of Nagasaki) ISEC201954 SITE201948 BioX201946 HWS201949 ICSS201952 EMM201957 
[more] 
ISEC201954 SITE201948 BioX201946 HWS201949 ICSS201952 EMM201957 pp.353356 
ISEC, SITE, ICSS, EMM, HWS, BioX, IPSJCSEC, IPSJSPT [detail] 
20190724 15:00 
Kochi 
Kochi University of Technology 
Participation Report of the 9th BIU Winter School on Cryptography Hiroaki Anada (Univ. Nagasaki) ISEC201955 SITE201949 BioX201947 HWS201950 ICSS201953 EMM201958 
In this technical report, ``The 9th BIU Winter School on Cryptography'' is introduced, which the author participated in.... [more] 
ISEC201955 SITE201949 BioX201947 HWS201950 ICSS201953 EMM201958 pp.357361 
IT, ISEC, WBS 
20190308 16:10 
Tokyo 
University of ElectroCommunications 
Noninteractive Proof Systems for GroupDependent Bundled Languages Hiroaki Anada (Univ. of Nagasaki) IT2018114 ISEC2018120 WBS2018115 
In this report,
we propose a bundled language for the direct product of groupdependent languages.
Then we construct... [more] 
IT2018114 ISEC2018120 WBS2018115 pp.243248 
ISEC 
20180907 10:20 
Tokyo 
KikaiShinkoKaikan Bldg. 
On AND/OR Composition of the ZKBoo Protocols Hiroaki Anada (U. Nagasaki) ISEC201853 
The ZKBoo protocol, which was presented at USENIX Security '16, is a kind of sigmaprotocol. Since the presentation it i... [more] 
ISEC201853 pp.2324 
LOIS, ISEC, SITE 
20171109 16:30 
Kyoto 

Anonymous AttributeAuthentication Scheme in Multiauthority Setting on Key Generation Hiroaki Anada (U.Nagasaki), Seiko Arita (IISEC) ISEC201759 SITE201741 LOIS201736 
In a setting that a single user is given plural credentials on her attributes and related secret keys, an authentication... [more] 
ISEC201759 SITE201741 LOIS201736 pp.6370 
ISEC 
20170512 10:00 
Tokyo 
KikaiShinkoKaikan Bldg. 
A Proposal on KeyUpdatable Searchable Encryption
 Applying Proxy ReEncryption with Keyword Search  Natsume Matsuzaki, Hiroaki Anada, Yohei Watanabe (Univ. of Nagasaki) ISEC20171 
Searchable encryption is one of the advanced cryptographic primitives,
which is being studied and developed actively
... [more] 
ISEC20171 pp.16 
ISEC, WBS, IT 
20170310 11:45 
Tokyo 
TOKAI University 
Diagonally WitnessIndistinguishable Proof Systems Hiroaki Anada (Univ. Nagasaki), Seiko Arita (IISEC) IT2016121 ISEC2016111 WBS201697 
We propose a witnessindistinguishable proof system which is a kind of parallel composition of witnessindistinguishable... [more] 
IT2016121 ISEC2016111 WBS201697 pp.145148 
ISEC 
20160902 10:10 
Tokyo 
KikaiShinkoKaikan Bldg. 
Bundling Proofs of Knowledge and its Application to Signatures Hiroaki Anada (Univ. Nagasaki), Seiko Arita (IISEC) ISEC201639 
(To be available after the conference date) [more] 
ISEC201639 pp.914 
LOIS, ISEC, SITE 
20151107 10:55 
Kanagawa 
Kanagawa Univ. 
Extension of NTRU Using Group Ring and Its Application Takanori Yasuda, Hiroaki Anada (ISIT), Kouichi Sakurai (Kyushu Univ.) ISEC201552 SITE201539 LOIS201546 
[more] 
ISEC201552 SITE201539 LOIS201546 pp.103109 
IPSJCSEC, ISEC, SITE, ICSS, EMM, IPSJSPT [detail] 
20150702 10:15 
Aichi 
NAGOYA TRADE & INDUSTRY CENTER 
AttributeBased TwoTier Signatures Hiroaki Anada (ISIT), Seiko Arita (IISEC), Kouichi Sakurai (Kyushu University) ISEC20159 SITE20157 ICSS201519 EMM201517 
An attributebased signature scheme is a digital signature scheme proposed in 2008 by Maji et al.,
in which a message i... [more] 
ISEC20159 SITE20157 ICSS201519 EMM201517 pp.18 
IA, ICSS 
20150612 11:30 
Fukuoka 
Kyushu Institute of Technology Univ. 
A Report on International Conference NDSS2015 Hiroaki Anada (ISIT), Yuhei Kawakoya (NTTi3), Kuniyasu Suzaki (AIST) IA201512 ICSS201512 
International conference NDSS (Network and Distributed System Security Symposium) is one of the top conference of inform... [more] 
IA201512 ICSS201512 pp.6368 
IT, ISEC, WBS 
20100304 11:15 
Nagano 
NaganoEngineering Campus, Shinshu University 
A 2round Identification Scheme Secure against Concurrent ManintheMiddle Attacks Hiroaki Anada, Seiko Arita (IISEC) IT200976 ISEC200984 WBS200955 
We give a discrete logarithm based identification scheme characterized by its high efficiency and strong security. In fa... [more] 
IT200976 ISEC200984 WBS200955 pp.3138 