International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Kenji Koyama

Publications

Year
Venue
Title
1999
ASIACRYPT
Modulus Search for Elliptic Curve Cryptosystems ★
Kenji Koyama Yukio Tsuruoka Noboru Kunihiro
1998
EUROCRYPT
Equivalence of Counting the Number of Points on Elliptic Curve over the Ring Z<sub>n</sub> and Factoring n
Noboru Kunihiro Kenji Koyama
1995
EUROCRYPT
Fast RSA-type Schemes Based on Singular Cubic Curves y²+axy=m³(mod n)
Kenji Koyama
1992
CRYPTO
Speeding up Elliptic Cryptosystems by Using a Signed Binary Window Method
Kenji Koyama Yukio Tsuruoka
1992
EUROCRYPT
Secure Conference Key Distribution Schemes for Conspiracy Attack
Kenji Koyama
1991
CRYPTO
New Public-Key Schemes Based on Elliptic Curves over the Ring Z<sub>n</sub>
Kenji Koyama Ueli Maurer Tatsuaki Okamoto Scott A. Vanstone
1990
AUSCRYPT
Direct Demonstration of the Power to Break Public-Key Cryptosystems
Kenji Koyama
1990
AUSCRYPT
Meet-in-the-Middle Attack on Digital Signature Schemes
Kazuo Ohta Kenji Koyama
1990
AUSCRYPT
Demonstrating Possession without Revealing Factors and its Application
Hiroki Shizuya Kenji Koyama Toshiya Itoh
1990
CRYPTO
Nonlinear Parity Circuits and their Cryptographic Applications
Kenji Koyama Routo Terada
1990
EUROCRYPT
Membership Authentication for Hierarchical Multigroups Using the Extended Fiat-Shamir Scheme
Kazuo Ohta Tatsuaki Okamoto Kenji Koyama
1988
EUROCRYPT
Security of Improved Identity-Based Conference Key Distribution Systems
Kenji Koyama Kazuo Ohta
1987
CRYPTO
Identity-based Conference Key Distribution Systems
Kenji Koyama Kazuo Ohta

Service

Asiacrypt 1991 Program committee
Crypto 1990 Program committee

Coauthors

Toshiya Itoh (1)
Kenji Koyama (13)
Noboru Kunihiro (2)
Ueli Maurer (1)
Kazuo Ohta (4)
Tatsuaki Okamoto (2)
Hiroki Shizuya (1)
Routo Terada (1)
Yukio Tsuruoka (2)
Scott A. Vanstone (1)