IEICE Trans

Ryuichi SAKAI

A Construction of Public-Key Cryptosystem Based on Singular Simultaneous Equations Masao KASAHARA Ryuichi SAKAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2005/01/01 Vol. E88-A No. 1 pp. 74-80 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Public Key Cryptography Keyword: public-key cryptosystem, singular simultaneous equations, multivariate polynomials,
	Summary \| Full Text:PDF(144.7KB)

A Construction of Public Key Cryptosystem for Realizing Ciphertext of Size 100 Bit and Digital Signature Scheme Masao KASAHARA Ryuichi SAKAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2004/01/01 Vol. E87-A No. 1 pp. 102-109 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Asymmetric Cipher Keyword: public key cryptosystem, simultaneous equations, multivariate polynomial, digital signature,
	Summary \| Full Text:PDF(298.1KB)

A New Traitor Tracing Shigeo MITSUNARI Ryuichi SAKAI Masao KASAHARA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2002/02/01 Vol. E85-A No. 2 pp. 481-484 Type of Manuscript: PAPER Category: Information Security Keyword: traitor tracing, Weil pairing, elliptic curve,
	Summary \| Full Text:PDF(180.6KB)

Person Authentication Scheme with Image of Face Casted by Light from Various Directions Ryuichi SAKAI Nobuyuki KOMORI Masaaki TAKAMATSU
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2001/07/01 Vol. E84-D No. 7 pp. 885-888 Type of Manuscript: Special Section LETTER (Special Issue on Biometric Person Authentication) Category: Keyword: face recognition, person authentication, varying light,
	Summary \| Full Text:PDF(636.1KB)

A New Product-Sum Type Public Key Cryptosystem Based on Reduced Bases Daisuke SUZUKI Yasuyuki MURAKAMI Ryuichi SAKAI Masao KASAHARA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2001/01/01 Vol. E84-A No. 1 pp. 326-330 Type of Manuscript: Special Section LETTER (Special Section on Cryptography and Information Security) Category: Keyword: low-density attack, product-sum type public key cryptosystems, reduced base,
	Summary \| Full Text:PDF(284.3KB)

A New Probabilistic ID-Based Non-interactive Key Sharing Scheme Yasuyuki MURAKAMI Ryuichi SAKAI Masao KASAHARA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2000/01/25 Vol. E83-A No. 1 pp. 2-9 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: ID, key sharing, non-interactive, ID-based non-interactive key sharing scheme (ID-NIKS), linear attack, collusion attack,
	Summary \| Full Text:PDF(429.7KB)

On Ambiguity in Coppersmith' Attacking Method a against NIKS-TAS Scheme Shigeo TSUJII Kiyomichi ARAKI Masao KASAHARA Eiji OKAMOTO Ryuichi SAKAI Yasuo MAEDA Tomohiko YAGISAWA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1996/01/25 Vol. E79-A No. 1 pp. 66-75 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: modulo degeneracy, cryptanalysis, ID-based key sharing, NIKS-TAS,
	Summary \| Full Text:PDF(762.2KB)

A New Class of Non-interactive ID-Based Key Sharing Schemes and Its Performances Ryuichi SAKAI Masao KASAHARA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1995/01/25 Vol. E78-A No. 1 pp. 51-58 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: key sharing, ID information, common key, cryptosystem, information security,
	Summary \| Full Text:PDF(557.2KB)

New Key Generation Algorithm for RSA Cryptosystem Ryuichi SAKAI Masakatu MORII Masao KASAHARA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1994/01/25 Vol. E77-A No. 1 pp. 89-97 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: cryptography, public-key cryptosystem, RSA, key generation algorithm, primality test,
	Summary \| Full Text:PDF(693.6KB)