Tetsutaro KOBAYASHI


Exposure-Resilient Identity-Based Dynamic Multi-Cast Key Distribution
Kazuki YONEYAMA Reo YOSHIDA Yuto KAWAHARA Tetsutaro KOBAYASHI Hitoshi FUJI Tomohide YAMAMOTO 
Publication:   
Publication Date: 2018/06/01
Vol. E101-A  No. 6  pp. 929-944
Type of Manuscript:  PAPER
Category: Cryptography and Information Security
Keyword: 
multi-cast key distributionID-based cryptographyexposure resiliencescalability
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id-eCK Secure ID-Based Authenticated Key Exchange on Symmetric and Asymmetric Pairing
Atsushi FUJIOKA Fumitaka HOSHINO Tetsutaro KOBAYASHI Koutarou SUZUKI Berkant USTAOLU Kazuki YONEYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/06/01
Vol. E96-A  No. 6  pp. 1139-1155
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
identity-based authenticated key exchangegap Bilinear Diffie-Hellman assumptionidentity-based extended Canetti-Krawczyk modelrandom oracle model
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Faster MapToPoint on Supersingular Elliptic Curves in Characteristic 3
Yuto KAWAHARA Tetsutaro KOBAYASHI Gen TAKAHASHI Tsuyoshi TAKAGI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/01/01
Vol. E94-A  No. 1  pp. 150-155
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Mathematics
Keyword: 
MapToPointcharacteristic 3supersingular elliptic curvestraceηT pairing
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Anonymous Hierarchical Identity-Based Encryption with Short Ciphertexts
Jae Hong SEO Tetsutaro KOBAYASHI Miyako OHKUBO Koutarou SUZUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/01/01
Vol. E94-A  No. 1  pp. 45-56
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Public Key Cryptography
Keyword: 
anonymous identity-based encryptionanonymous hierarchical identity-based encryptionpublic-key encryption with keyword search
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Security of ESIGN-PSS
Tetsutaro KOBAYASHI Eiichiro FUJISAKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/07/01
Vol. E90-A  No. 7  pp. 1395-1405
Type of Manuscript:  PAPER
Category: Information Security
Keyword: 
ESIGNPSS encodingAER assumptionexistential unforgeability against chosen-message attack (CMA security)
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Candidate One-Way Functions on Non-Supersingular Elliptic Curves
Taiichi SAITO Fumitaka HOSHINO Shigenori UCHIYAMA Tetsutaro KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/01/01
Vol. E89-A  No. 1  pp. 144-150
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Elliptic Curve Cryptography
Keyword: 
one-way functionpairing-based cryptosystemdistortion mapthe Weil and the Tate pairingsco-Diffie-Hellman problem
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Efficient Algorithms for Tate Pairing
Tetsutaro KOBAYASHI Kazumaro AOKI Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/01/01
Vol. E89-A  No. 1  pp. 134-143
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Elliptic Curve Cryptography
Keyword: 
Weil pairingTate pairingelliptic curve cryptosystemfast computation
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Non-Supersingular Elliptic Curves for Pairing-Based Cryptosystems
Taiichi SAITO Fumitaka HOSHINO Shigenori UCHIYAMA Tetsutaro KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/05/01
Vol. E87-A  No. 5  pp. 1203-1205
Type of Manuscript:  Special Section LETTER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
non-supersingular elliptic curvepairing-based cryptosystemthe Weil and the Tate pairings
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A Cyclic Window Algorithm for Elliptic Curves over OEF
Tetsutaro KOBAYASHI Fumitaka HOSHINO Kazumaro AOKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/01/01
Vol. E86-A  No. 1  pp. 121-128
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Asymmetric Ciphers
Keyword: 
cyclic window algorithmoptimal extension fieldbase-φ expansionelliptic curve cryptosystem
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Efficient τ-Adic Sliding Window Method on Elliptic Curve Cryptosystems
Hiroaki OGURO Tetsutaro KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/01/01
Vol. E86-A  No. 1  pp. 113-120
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Asymmetric Ciphers
Keyword: 
elliptic curve cryptosystemscalar multiplicationτ-adic sliding window methodprecomputationfast implementation
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Lenient/Strict Batch Verification in Several Groups
Fumitaka HOSHINO Masayuki ABE Tetsutaro KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/01/01
Vol. E86-A  No. 1  pp. 64-72
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Symmetric Ciphers and Hash Functions
Keyword: 
batch verificationelliptic curve cryptosystem
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Base-φ Method for Elliptic Curves over OEF
Tetsutaro KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/04/25
Vol. E83-A  No. 4  pp. 679-686
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
elliptic curve cryptosystemscalar multiplicationOEFfinite fieldFrobenius maptable reference method
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Remarks on Elliptic Curve Discrete Logarithm Problems
Naoki KANAYAMA Tetsutaro KOBAYASHI Taiichi SAITO Shigenori UCHIYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/01/25
Vol. E83-A  No. 1  pp. 17-23
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
elliptic curve discrete logarithm problemMOV algorithmFR algorithm
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Fast Modular Inversion Algorithm to Match Any Operation Unit
Tetsutaro KOBAYASHI Hikaru MORITA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/05/25
Vol. E82-A  No. 5  pp. 733-740
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
modular inversionMontgomery methodbinary GCDEuclidean algorithmelliptic curve cryptosystem
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