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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 16 of 16  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
ISEC 2018-09-07
14:25
Tokyo Kikai-Shinko-Kaikan Bldg. New Public key attack on MH knapsak PKC
Ryuichi Sakai, Yasuyuki Murakami (OECU) ISEC2018-58
 [more] ISEC2018-58
pp.39-42
IT, EMM 2018-05-17
16:25
Tokyo Ookayama Campus, Tokyo Institute of Technology Public key attack on knapsak PKC based on subset sum decision problem
Ryuichi Sakai, Yasuyuki Murakami (Osaka Electro-Communication Univ.) IT2018-6 EMM2018-6
In 2012, Murakami, Hamasho and Kasahara have proposed a knapsack PKC based on the subset sum decision problem. An attack... [more] IT2018-6 EMM2018-6
pp.31-34
WBS, IT, ISEC 2018-03-09
16:10
Tokyo Katsusika Campas, Tokyo University of Science Attacks on several Multivariate PKCs -- Attack on K(AVII)MVPKC --
Ryuichi Sakai (Osaka Electro-Communication Univ.), Masao Kasahara (Waseda Univ.) IT2017-138 ISEC2017-126 WBS2017-119
One of the anthers, Kasahara, have been proposed several public key cryptosystems based on multivariate polynomials wit... [more] IT2017-138 ISEC2017-126 WBS2017-119
pp.207-212
ISEC 2015-09-04
13:40
Tokyo Kikai-Shinko-Kaikan Bldg. Proposal of new classes of pseudo-random multivariate PKC, PR•MPKC -- Along with a comment on K(II) Transformation --
Masao Kasahara (Waseda Univ./Chuo Univ.), Ryuichi Sakai (OECU) ISEC2015-29
 [more] ISEC2015-29
pp.27-34
IT 2014-07-18
15:25
Hyogo Kobe University New Method for Factoring RSA Moduli with Implicit Hint
Ryuichi Sakai (OECU), Masao Kasahara (Chuo Univ.) IT2014-36
 [more] IT2014-36
pp.139-142
IT, ISEC, WBS 2010-03-05
10:15
Nagano Nagano-Engineering Campus, Shinshu University Bio-metric Authentication using Motion Image of Speakers Face
Mari Ozaki, Ryuichi Sakai (Osaka Electro-Comm Univ.) IT2009-133 ISEC2009-141 WBS2009-112
 [more] IT2009-133 ISEC2009-141 WBS2009-112
pp.399-401
ISEC 2009-05-22
16:35
Tokyo Kikai-Shinko-Kaikan Bldg. Cryptanalysis on 2 Dimensional Subset-sum Public Key Cryptosystem
Ryuichi Sakai (Osaka Electro-Comm Univ.) ISEC2009-14
 [more] ISEC2009-14
pp.89-92
ISEC, SITE, IPSJ-CSEC 2008-07-25
14:15
Fukuoka Fukuoka Institute of System LSI Design Industry Traitor Tracing from ID based Broadcast Encryption
Ryuichi Sakai (OECU) ISEC2008-48
ID based broadcast encryption scheme based on the key setting of Mitsunari-Ssakai-Kasahara
traitor tracing has several... [more]
ISEC2008-48
pp.95-100
ISEC 2006-12-13
12:55
Tokyo Kikai-Shinko-Kaikan Bldg. Key Generation Schemes for the ID base Public Key Cyrptosystems.
Ryuichi Sakai (Osaka Electro-Comm Univ.)
 [more] ISEC2006-105
pp.25-28
ISEC 2005-12-16
13:50
Tokyo Kikai-Shinko-Kaikan Bldg. New Efficient Voting Scheme
Ryuichi Sakai (OECU), Masao Kasahara (OGU)
 [more] ISEC2005-115
pp.31-34
ISEC, IPSJ-CSEC, SITE 2005-07-21
14:40
Iwate Iwate Prefectural University An (N,K) Threshold Signature Scheme with Public Keys of Small Size
Masao Kasahara (Osaka Gakuin Univ.), Ryuichi Sakai (Osaka Electro-Comm. Univ.)
 [more] ISEC2005-35 SITE2005-33
pp.195-200
ISEC, IPSJ-CSEC, SITE 2005-07-21
15:05
Iwate Iwate Prefectural University Meta Ring Signature
Hiroyuki Okazaki (KCG), Ryuichi Sakai (OECU), Masao Kasahara (OGU)
In this paper, we propose a new concept ``Meta Ring Signature''.
Suppose that a signature text work as a public key,
... [more]
ISEC2005-36 SITE2005-34
pp.201-204
ISEC 2005-05-18
15:20
Tokyo Kikai-Shinko-Kaikan Bldg. Password authentication with tablet device
Ryuichi Sakai, Takenao Kukita (Osaka Electro-Communication Univ.)
 [more] ISEC2005-6
pp.35-36
ISEC 2005-05-18
15:45
Tokyo Kikai-Shinko-Kaikan Bldg. A Construction of Public-Key Cryptosystem based on Singular Simultaneous Equations and Its Variants
Masao Kasahara (Osaka Gakuin Univ.), Ryuichi Sakai (Osaka Electro-Comm. Univ.)
 [more] ISEC2005-7
pp.37-42
ISEC, IPSJ-CSEC 2004-07-20
13:30
Tokushima Tokushima Univ. Some Extensions of Multi-Variate Public Key Cryptosystems
Ryuichi Sakai (Osaka Electro-Communication Univ.), Masao Kasahara (Osaka Gakuin Univ.)
 [more] ISEC2004-18
pp.35-38
ISEC, IPSJ-CSEC 2004-07-20
13:55
Tokushima Tokushima Univ. A Construction of Public Key Cryptosystem based on Random Singular and Non-singular Simultaneous Equations over Extension Field
Masao Kasahara (Osaka Gakuin Univ.), Ryuichi Sakai (Osaka Electro-Communication Univ.)
 [more] ISEC2004-19
pp.39-44
 Results 1 - 16 of 16  /   
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