Yumi SAKEMI


Detailed Cost Estimation of CNTW Forgery Attack against EMV Signature Scheme
Tetsuya IZU Yumi SAKEMI Masahiko TAKENAKA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2011/11/01
Vol. E94-D  No. 11  pp. 2111-2118
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication System Security)
Category: 
Keyword: 
ISO/IEC 9796-2 signatureEMV signatureCNTW forgery attackcost estimation
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An Improvement of Twisted Ate Pairing Efficient for Multi-Pairing and Thread Computing
Yumi SAKEMI Yasuyuki NOGAMI Shoichi TAKEUCHI Yoshitaka MORIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/06/01
Vol. E94-A  No. 6  pp. 1356-1367
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
twisted Ate pairingMiller's algorithmFrobenius mapmulti-pairingthread computing
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Integer Variable χ-Based Cross Twisted Ate Pairing and Its Optimization for Barreto-Naehrig Curve
Yasuyuki NOGAMI Yumi SAKEMI Hidehiro KATO Masataka AKANE Yoshitaka MORIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/08/01
Vol. E92-A  No. 8  pp. 1859-1867
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: Theory
Keyword: 
Ate pairingMiller's algorithm
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Scalar Multiplication Using Frobenius Expansion over Twisted Elliptic Curve for Ate Pairing Based Cryptography
Yasuyuki NOGAMI Yumi SAKEMI Takumi OKIMOTO Kenta NEKADO Masataka AKANE Yoshitaka MORIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/01/01
Vol. E92-A  No. 1  pp. 182-189
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Mathematics
Keyword: 
Ate pairingBN curvescalar multiplicationFrobenius mappingtwisted subfield computation
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