Yasuyuki SAKAI


Changes to Quantum Cryptography
Yasuyuki SAKAI Hidema TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/05/01
Vol. E93-A  No. 5  pp. 872-879
Type of Manuscript:  INVITED PAPER (Special Section on Leading-Edge Developments in Quantum Cryptographic Systems)
Category: 
Keyword: 
modern cryptographyquantum key distributionunconditional security
 Summary | Full Text:PDF(346.6KB)

Simple Power Analysis on Fast Modular Reduction with Generalized Mersenne Prime for Elliptic Curve Cryptosystems
Yasuyuki SAKAI Kouichi SAKURAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/01/01
Vol. E89-A  No. 1  pp. 231-237
Type of Manuscript:  Special Section LETTER (Special Section on Cryptography and Information Security)
Category: Side Channel Analysis
Keyword: 
side channel analysiselliptic curve cryptosystemmodular reductiongeneralized Mersenne primeunified code
 Summary | Full Text:PDF(102.5KB)

On the Vulnerability of Exponent Recodings for the Exponentiation against Side Channel Attacks
Yasuyuki SAKAI Kouichi SAKURAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/01/01
Vol. E88-A  No. 1  pp. 154-160
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Tamper-Resistance
Keyword: 
side channel attackexponent recodingRSA cryptosystemselliptic curve cryptosystems
 Summary | Full Text:PDF(126.9KB)

An Efficient Representation of Scalars for Simultaneous Elliptic Scalar Multiplication
Yasuyuki SAKAI Kouichi SAKURAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/05/01
Vol. E86-A  No. 5  pp. 1135-1146
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
elliptic curve cryptosystemsscalar multiplication
 Summary | Full Text:PDF(276.6KB)

Speeding Up Elliptic Scalar Multiplication Using Multidoubling
Yasuyuki SAKAI Kouichi SAKURAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/05/01
Vol. E85-A  No. 5  pp. 1075-1083
Type of Manuscript:  Special Section LETTER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
elliptic curve cryptosystemscalar multiplicationMontgomery formmultidoublingfast implementation
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Efficient Scalar Multiplications on Elliptic Curves with Direct Computations of Several Doublings
Yasuyuki SAKAI Kouichi SAKURAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/01/01
Vol. E84-A  No. 1  pp. 120-129
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
elliptic curve cryptosystemscalar multiplicationwindow methodcoordinate systemimplementation
 Summary | Full Text:PDF(248.6KB)

On the Practical Performance of Hyperelliptic Curve Cryptosystems in Software Implementation
Yasuyuki SAKAI Kouichi SAKURAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/04/25
Vol. E83-A  No. 4  pp. 692-703
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
hyperelliptic curve cryptosystemefficient implementationjacobianlagrange reduction
 Summary | Full Text:PDF(420.8KB)