Mitsuru TADA


A Digital Signature Scheme Based on NP-Complete Lattice Problems
Shunichi HAYASHI Mitsuru TADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/05/01
Vol. E91-A  No. 5  pp. 1253-1264
Type of Manuscript:  PAPER
Category: Cryptography and Information Security
Keyword: 
NP-complete problemlatticeidentification schemesignature scheme
 Summary | Full Text:PDF(220KB)

New NP-Complete Problems Associated with Lattices
Shunichi HAYASHI Mitsuru TADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/05/01
Vol. E90-A  No. 5  pp. 941-948
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
NP-complete problemlatticeELVPBELVPNELVP
 Summary | Full Text:PDF(185KB)

On the Security and the Efficiency of Multi-Signature Schemes Based on a Trapdoor One-Way Permutation
Kei KAWAUCHI Mitsuru TADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/05/01
Vol. E88-A  No. 5  pp. 1274-1282
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
multi-signature schemeexact securityrandom oracle model
 Summary | Full Text:PDF(197.9KB)

Probabilistic Multi-Signature Schemes Using a One-Way Trapdoor Permutation
Kei KAWAUCHI Yuichi KOMANO Kazuo OHTA Mitsuru TADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/05/01
Vol. E87-A  No. 5  pp. 1141-1153
Type of Manuscript:  Special Section LETTER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
multi-signature schemeprobabilistic signature schemeexact securityrandom oracle model
 Summary | Full Text:PDF(317.6KB)

A Secure Multisignature Scheme with Signing Order Verifiability
Mitsuru TADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/01/01
Vol. E86-A  No. 1  pp. 73-88
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Symmetric Ciphers and Hash Functions
Keyword: 
multisignature schemesigning orderorder-specified multisignature schemeseries-parallel graphsecurity
 Summary | Full Text:PDF(430.8KB)

On the Security of the Okamoto-Tanaka ID-Based Key Exchange Scheme against Active Attacks
Seungjoo KIM Masahiro MAMBO Takeshi OKAMOTO Hiroki SHIZUYA Mitsuru TADA Dongho WON 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/01/01
Vol. E84-A  No. 1  pp. 231-238
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
Okamoto-Tanaka key exchange schemeID-based schemeactive attackknown-key attackforward secrecy
 Summary | Full Text:PDF(288.5KB)