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: Special Section PAPER (Special Section on Leading-Edge Developments in Quantum Cryptographic Systems)
Category: INVITED
Keyword: 
modern cryptography,  quantum key distribution,  unconditional security, 
  Summary |  Full Text:PDF (345.9KB)
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 analysis,  elliptic curve cryptosystem,  modular reduction,  generalized Mersenne prime,  unified code, 
  Summary |  Full Text:PDF (104KB)
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 attack,  exponent recoding,  RSA cryptosystems,  elliptic curve cryptosystems, 
  Summary |  Full Text:PDF (126.6KB)
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 cryptosystems,  scalar multiplication, 
  Summary |  Full Text:PDF (280.5KB)
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 cryptosystem,  scalar multiplication,  Montgomery form,  multidoubling,  fast implementation, 
  Summary |  Full Text:PDF (262.5KB)
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 cryptosystem,  scalar multiplication,  window method,  coordinate system,  implementation, 
  Summary |  Full Text:PDF (251.1KB)
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: 2000/04/20
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 cryptosystem,  efficient implementation,  jacobian,  lagrange reduction, 
  Summary |  Full Text:PDF (425.5KB)