IEICE Trans

Kenji KOYAMA

Fast Computation over Elliptic Curves E(F_qⁿ) Based on Optimal Addition Sequences Yukio TSURUOKA Kenji KOYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2001/01/01 Vol. E84-A No. 1 pp. 114-119 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: elliptic curves, scalar multiplication, Frobenius map, addition chains,
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Two Discrete Log Algorithms for Super-Anomalous Elliptic Curves and Their Applications Noboru KUNIHIRO Kenji KOYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2000/01/25 Vol. E83-A No. 1 pp. 10-16 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: elliptic curve discrete logarithm problem, super-anomalous elliptic curves, deterministic polynomial time algorithm,
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Improved Elliptic Curve Methods for Factoring and Their Performance Hidenori KUWAKADO Kenji KOYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1997/01/25 Vol. E80-A No. 1 pp. 25-33 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: factorization, elliptic curve, birthday paradox,
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Fast Exponentiation Algorithms Based on Batch-Processing and Precomputation Yukio TSURUOKA Kenji KOYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1997/01/25 Vol. E80-A No. 1 pp. 34-39 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: addition chains,
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A New Version of FEAL, Stronger against Differential Cryptanalysis^* Routo TERADA Paulo G. PINHEIRO Kenji KOYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1996/01/25 Vol. E79-A No. 1 pp. 28-34 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: cryptography, block cipher, differential cryptanalysis, key breaking,
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The Security of an RDES Cryptosystem against Linear Cryptanalysis Yasushi NAKAO Toshinobu KANEKO Kenji KOYAMA Routo TERADA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1996/01/25 Vol. E79-A No. 1 pp. 12-19 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: linear cryptanalysis, secret key cryptosystem, DES, probabilistic swapping, best expression,
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A New RSA-Type Scheme Based on Singular Cubic Curves (y-αx)(y-βx)x³(mod n) Hidenori KUWAKADO Kenji KOYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1996/01/25 Vol. E79-A No. 1 pp. 49-53 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: public-key cryptosystem, the RSA scheme, cubic curves,
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On the Solutions of the Diophantine Equation x³y³z³n Kenji KOYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1995/03/25 Vol. E78-A No. 3 pp. 444-449 Type of Manuscript: LETTER Category: Information Security and Cryptography Keyword: Diophantine equation, search algorithm,
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A New RSA-Type Scheme Based on Singular Cubic Curves y²x³+bx² (mod n) Hidenori KUWAKADO Kenji KOYAMA Yukio TSURUOKA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1995/01/25 Vol. E78-A No. 1 pp. 27-33 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: cryptography, RSA cryptosystem, cubic curve,
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Dynamic Swapping Schemes and Differential Cryptanalysis Toshinobu KANEKO Kenji KOYAMA Routo TERADA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1994/08/25 Vol. E77-A No. 8 pp. 1328-1336 Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications) Category: Keyword: differential cryptanalysis, secret key cryptosystem, DES, characteristic probability, dynamic swapping scheme,
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Efficient Cryptosystems over Elliptic Curves Based on a Product of Form-Free Primes Hidenori KUWAKADO Kenji KOYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1994/08/25 Vol. E77-A No. 8 pp. 1309-1318 Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications) Category: Keyword: cryptography, public-key, elliptic curves, factorization,
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Demonstrating Possession without Revealing Factors Hiroki SHIZUYA Kenji KOYAMA Toshiya ITOH
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1994/01/25 Vol. E77-A No. 1 pp. 39-46 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: zero-knowledge proof, factoring, discrete logarithm,
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FOREWORD Kenji KOYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1994/01/25 Vol. E77-A No. 1 pp. 1-1 Type of Manuscript: FOREWORD Category: Keyword:
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How to Strengthen DES-like Cryptosystems against Differential Cryptanalysis Kenji KOYAMA Routo TERADA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1993/01/25 Vol. E76-A No. 1 pp. 63-69 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: DES, cryptanalysis, differential attack, probabilistic swapping,
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A Signed Binary Window Method for Fast Computing over Elliptic Curves Kenji KOYAMA Yukio TSURUOKA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1993/01/25 Vol. E76-A No. 1 pp. 55-62 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: addition chain, elliptic curves,
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Elliptic Curve Cryptosytems and Their Applications Kenji KOYAMA Tatsuaki OKAMOTO
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 1992/01/25 Vol. E75-D No. 1 pp. 50-57 Type of Manuscript: Special Section PAPER (Special Section on Theoretical Foundations of Computing) Category: Keyword: public-key cryptosystem, elliptic curve, factoring,
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Security and Unique Decipherability of Two-Dimensional Public Key Cryptosystems Kenji KOYAMA
Publication: IEICE TRANSACTIONS (1976-1990) Publication Date: 1990/07/25 Vol. E73-E No. 7 pp. 1058-1067 Type of Manuscript: Special Section PAPER (Special Issue on Cryptography and Information Security) Category: Public-Key Systems Keyword:
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The Number of Extended k-th Power Residues mod p^m Kenji KOYAMA
Publication: IEICE TRANSACTIONS (1976-1990) Publication Date: 1986/12/25 Vol. E69-E No. 12 pp. 1267-1270 Type of Manuscript: LETTER Category: Mathematics, Combinatorics and Graph Theory Keyword:
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Cryptographic Key Sharing Methods for Multi-Groups and Security Analysis Kenji KOYAMA
Publication: IEICE TRANSACTIONS (1976-1990) Publication Date: 1983/01/25 Vol. E66-E No. 1 pp. 13-20 Type of Manuscript: PAPER Category: Data Transmission Keyword:
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