Eikoh CHIDA

A Secure Structured Multisignature Scheme Based on a Non-commutative Ring Homomorphism
Naoto YANAI  Eikoh CHIDA  Masahiro MAMBO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/06/01
Vol. E94-A  No. 6  pp. 1346-1355
Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
multisignature scheme,  structured multisignature scheme,  homomorphic scheme,  non-commutative ring homomorphism,  random oracle model, 
  Summary |  Full Text:PDF (367.5KB)
A Note on the Relationships among Certified Discrete Log Cryptosystems
Eikoh CHIDA  Toshiya ITOH  Hiroki SHIZUYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/05/01
Vol. E86-A  No. 5  pp. 1198-1202
Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
certified discrete logarithm problem,  order,  primitive root,  probabilistic reducibility,  deterministic reducibility, 
  Summary |  Full Text:PDF (225.1KB)
A Way of Making Trapdoor One-Way Functions Trapdoor No-Way
Eikoh CHIDA  Motoji OHMORI  Hiroki SHIZUYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/01/01
Vol. E84-A  No. 1  pp. 151-156
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
one-way function,  no-way function,  trapdoor, 
  Summary |  Full Text:PDF (214.4KB)
On the One-Way Algebraic Homomorphism
Eikoh CHIDA  Takao NISHIZEKI  Motoji OHMORI  Hiroki SHIZUYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/01/20
Vol. E79-A  No. 1  pp. 54-60
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
one-way function,  homomorphism,  cryptography, 
  Summary |  Full Text:PDF (655.7KB)
One-Way Functions over Finite Near-Rings
Eikoh CHIDA  Hiroki SHIZUYA  Takao NISHIZEKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/01/20
Vol. E78-A  No. 1  pp. 4-10
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
one-way functions,  ring homomorphism,  cryptography, 
  Summary |  Full Text:PDF (594.1KB)