Hatsukazu TANAKA


Reversible Watermark with Large Capacity Based on the Prediction Error Expansion
Minoru KURIBAYASHI Masakatu MORII Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/07/01
Vol. E91-A  No. 7  pp. 1780-1790
Type of Manuscript:  PAPER
Category: Cryptography and Information Security
Keyword: 
reversible watermarkprediction errorlocation map
 Summary | Full Text:PDF(630.8KB)

Fingerprinting Protocol Based on Distributed Providers Using Oblivious Transfer
Urara SHINMYO Minoru KURIBAYASHI Masakatu MORII Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/10/01
Vol. E89-A  No. 10  pp. 2597-2602
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Cryptography
Keyword: 
fingerprintingdistributed providersoblivious transfer
 Summary | Full Text:PDF(304.2KB)

Collusion-Attack Free ID-Based Non-interactive Key Sharing
Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/06/01
Vol. E89-A  No. 6  pp. 1820-1824
Type of Manuscript:  PAPER
Category: Information Security
Keyword: 
identity-informationnon-interactive key sharingidentity-based cryptosystemdiscrete logarithm problemfactoring problemcollusion-attack free
 Summary | Full Text:PDF(126.1KB) | (Errata(Uploaded on September 1,2006))

Fingerprinting Protocol for On-Line Trade Using Information Gap between Buyer and Merchant
Minoru KURIBAYASHI Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/04/01
Vol. E89-A  No. 4  pp. 1108-1115
Type of Manuscript:  PAPER
Category: Information Security
Keyword: 
fingerprinting protocolkey managementasymmetric propertysymmetric cryptosystem
 Summary | Full Text:PDF(219.9KB)

Size-Reduced Visual Secret Sharing Scheme
Hidenori KUWAKADO Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/05/01
Vol. E87-A  No. 5  pp. 1193-1197
Type of Manuscript:  Special Section LETTER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
visual secret sharing schemepolynomial representationsize reductioncolumn deletion
 Summary | Full Text:PDF(97.9KB)

Video Watermarking of Which Embedded Information Depends on the Distance between Two Signal Positions
Minoru KURIBAYASHI Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/12/01
Vol. E86-A  No. 12  pp. 3267-3275
Type of Manuscript:  PAPER
Category: Image
Keyword: 
watermarksynchronization signalStirMarkpatchworkvideo sequence
 Summary | Full Text:PDF(354.1KB)

Efficient Relative Time-Stamping Scheme Based on the Ternary Link
Yuichi IGARASHI Hidenori KUWAKADO Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/10/01
Vol. E86-A  No. 10  pp. 2552-2559
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Information Security
Keyword: 
relative time-stamping schemeverification pathternary link
 Summary | Full Text:PDF(415.6KB)

Transitive Signature Scheme for Directed Trees
Hidenori KUWAKADO Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/05/01
Vol. E86-A  No. 5  pp. 1120-1126
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
transitive signaturefail-stop signaturetreegraph
 Summary | Full Text:PDF(220.9KB)

FOREWORD
Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/10/01
Vol. E85-A  No. 10  pp. 2195-2195
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(41KB)

Polynomial Representation of a Visual Secret Sharing Scheme and Its Application
Hidenori KUWAKADO Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/06/01
Vol. E85-A  No. 6  pp. 1379-1386
Type of Manuscript:  PAPER
Category: Information Security
Keyword: 
information securityvisual secret sharingpolynomial representation
 Summary | Full Text:PDF(214.1KB)

All-or-Nothing Transform Based on a Linear Code
Hidenori KUWAKADO Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/05/01
Vol. E85-A  No. 5  pp. 1084-1087
Type of Manuscript:  Special Section LETTER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
cryptographyinformation securityall-or-nothing transformencryption modelinear code
 Summary | Full Text:PDF(134.7KB)

Message Authentication for Stream
Hidenori KUWAKADO Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/01/01
Vol. E85-A  No. 1  pp. 190-193
Type of Manuscript:  Special Section LETTER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
information securitymessage authenticationstreamhash function
 Summary | Full Text:PDF(142.2KB)

A New Digital Watermarking Scheme Applying Locally the Wavelet Transform
Minoru KURIBAYASHI Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/10/01
Vol. E84-A  No. 10  pp. 2500-2507
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Information Security
Keyword: 
wavelet transformwatermarkStirMark attacksearching protocol
 Summary | Full Text:PDF(687KB)

Equivalent Keys in RC6-32/20/176
Hiroshi MIZUNO Hidenori KUWAKADO Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/10/01
Vol. E84-A  No. 10  pp. 2474-2481
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Information Security
Keyword: 
cryptanalysisRC6key scheduleequivalent keyDavies-Meyer hash function
 Summary | Full Text:PDF(297.1KB)

Improvement on the Cheater Identifiable Threshold Scheme
Hidenori KUWAKADO Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/04/01
Vol. E84-A  No. 4  pp. 957-960
Type of Manuscript:  Special Section LETTER (Special Section on Fundamentals of Information and Communications)
Category: 
Keyword: 
information securitysecret sharingauthentication codeerasure decodingcheater
 Summary | Full Text:PDF(142.5KB)

A Search Algorithm for Bases of Calderbank-Shor-Steane Type Quantum Error-Correcting Codes
Kin-ichiroh TOKIWA Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/03/01
Vol. E84-A  No. 3  pp. 860-865
Type of Manuscript:  PAPER
Category: Coding Theory
Keyword: 
quantum error-correcting codesCSS codesbasislinear codescomputer search
 Summary | Full Text:PDF(208.9KB)

New Algorithm for Finding Preimages in a Reduced Version of the MD4 Compression Function
Hidenori KUWAKADO Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/01/25
Vol. E83-A  No. 1  pp. 97-100
Type of Manuscript:  Special Section LETTER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
information securityhash functionone-way functionMD4
 Summary | Full Text:PDF(507.8KB)

Image Size Invariant Visual Cryptography
Ryo ITO Hidenori KUWAKADO Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/10/25
Vol. E82-A  No. 10  pp. 2172-2177
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Security
Keyword: 
secret sharingvisual secret sharingvisual cryptography
 Summary | Full Text:PDF(466KB)

New Subliminal Channel Embedded in the ESIGN
Hidenori KUWAKADO Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/10/25
Vol. E82-A  No. 10  pp. 2167-2171
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Security
Keyword: 
cryptographydigital signaturesubliminal channelESIGN
 Summary | Full Text:PDF(424.2KB)

On the Security of the ElGamal-Type Signature Scheme with Small Parameters
Hidenori KUWAKADO Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/01/25
Vol. E82-A  No. 1  pp. 93-97
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
digital signaturecontinued fractionElGamal signatureDSA
 Summary | Full Text:PDF(168.2KB)

On the Security of the Improved Knapsack Cryptosystem
Hidenori KUWAKADO Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/10/25
Vol. E81-A  No. 10  pp. 2184-2185
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Coded Modulation/Security
Keyword: 
public-key cryptosystemknapsack problemchoice of encryption keyscontinued fractionLLL algorithm
 Summary | Full Text:PDF(153.4KB)

A New Class of Single Error-Correcting Fixed Block-Length (d, k) Codes
Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/11/25
Vol. E80-A  No. 11  pp. 2052-2057
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
error-correcting (d,k) codeRLL sequenceLee weightTALG algorithmpeak-sift errorinsertion/deletion errorsymmetric error
 Summary | Full Text:PDF(423.9KB)

FOREWORD
Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/01/25
Vol. E80-A  No. 1  pp. 1-1
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(80.4KB)

A New Method of Measuring the Blocking Effects of Images Based on Cepstral Information
Hiromu KODA Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/08/25
Vol. E79-A  No. 8  pp. 1274-1282
Type of Manuscript:  PAPER
Category: Image Theory
Keyword: 
blocking effects,cepstral informationimage qualitydata compression
 Summary | Full Text:PDF(720.5KB)

A New Approach to Constructing a Provably Secure Variant of Schnorr's Identification Scheme
Satoshi HADA Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/09/25
Vol. E78-A  No. 9  pp. 1154-1159
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
interactive identification schemeprovable securitySchnorr's schemeOkamoto's scheme
 Summary | Full Text:PDF(472.6KB)

A Code Construction for M-Choose-T Communication over the Multiple-Access Adder Channel
Kin-ichiroh TOKIWA Hiroshi MATSUDA Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/01/25
Vol. E78-A  No. 1  pp. 94-99
Type of Manuscript:  PAPER
Category: Information Theory and Coding Theory
Keyword: 
M-Choose-T communicationmultiple-access adder channel, error correcting codesReed-Solomon codeserasure decodingsum rate
 Summary | Full Text:PDF(478.4KB)

Identity-Based Non-interactive Key Sharing
Hatsukazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/01/25
Vol. E77-A  No. 1  pp. 20-23
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
identity informationnon-interactive key sharingidentity-based cryptosystempublic-key cryptosystem
 Summary | Full Text:PDF(309KB)

An Algorithm to Solve the Congruence Equation AX B (Mod M) Using Only Multiplications Mod M
Hatsukazu TANAKA Seiko KANEKU 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1977/10/25
Vol. E60-E  No. 10  pp. 551-551
Type of Manuscript:  LETTER
Category: Computers
Keyword: 
 Summary | Full Text:PDF(71.5KB)