Hideki IMAI


A Theoretical Framework for Constructing Matching Algorithms Secure against Wolf Attack
Manabu INUMA  Akira OTSUKA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2013/02/01
Vol. E96-D  No. 2  pp. 357-364
Type of Manuscript: PAPER
Category: Image Recognition, Computer Vision
Keyword: 
biometricswolf attackwolf attack probabilitymatching algorithmsecurity
  Summary |  Full Text:PDF

A Numerical Evaluation of Entanglement Sharing Protocols Using Quantum LDPC CSS Codes
Masakazu YOSHIDA  Manabu HAGIWARA  Takayuki MIYADERA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/09/01
Vol. E95-A  No. 9  pp. 1561-1569
Type of Manuscript: PAPER
Category: Information Theory
Keyword: 
entanglement distillation protocolquantum error-correcting codesquantum low-density parity-check codessum-product decoding
  Summary |  Full Text:PDF

Threshold Anonymous Password-Authenticated Key Exchange Secure against Insider Attacks
SeongHan SHIN  Kazukuni KOBARA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2011/11/01
Vol. E94-D  No. 11  pp. 2095-2110
Type of Manuscript: Special Section PAPER (Special Section on Information and Communication System Security)
Category: 
Keyword: 
password-authenticated key exchangepasswordson-line/off-line dictionary attacksanonymityinsider attacksprovable security
  Summary |  Full Text:PDF

Secure Broadcast System with Simultaneous Individual Messaging
Arisa FUJII  Go OHTAKE  Goichiro HANAOKA  Nuttapong ATTRAPADUNG  Hajime WATANABE  Kazuto OGAWA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/06/01
Vol. E94-A  No. 6  pp. 1328-1337
Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
digital broadcastingcopyright protectionConditional Access System (CAS)broadcast encryption
  Summary |  Full Text:PDF

Universally Composable and Statistically Secure Verifiable Secret Sharing Scheme Based on Pre-Distributed Data
Rafael DOWSLEY  Jorn MULLER-QUADE  Akira OTSUKA  Goichiro HANAOKA  Hideki IMAI  Anderson C.A. NASCIMENTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/02/01
Vol. E94-A  No. 2  pp. 725-734
Type of Manuscript: PAPER
Category: Cryptography and Information Security
Keyword: 
verifiable secret sharingdishonest majoritypre-distributed dataunconditional securityuniversal composable
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Security Analysis of Two Augmented Password-Authenticated Key Exchange Protocols
SeongHan SHIN  Kazukuni KOBARA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/11/01
Vol. E93-A  No. 11  pp. 2092-2095
Type of Manuscript: Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Cryptography and Information Security
Keyword: 
PAKEon-line/off-line dictionary attacksaugmented PAKEserver-compromise impersonation attacksIEEE P1363.2 working group
  Summary |  Full Text:PDF

An RSA-Based Leakage-Resilient Authenticated Key Exchange Protocol Secure against Replacement Attacks, and Its Extensions
SeongHan SHIN  Kazukuni KOBARA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/06/01
Vol. E93-A  No. 6  pp. 1086-1101
Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: Cryptography and Information Security
Keyword: 
authenticated key exchangepasswordson-line/off-line dictionary attacksRSAleakage of stored secretsreplacement attacks
  Summary |  Full Text:PDF

Dual-Policy Attribute Based Encryption: Simultaneous Access Control with Ciphertext and Key Policies
Nuttapong ATTRAPADUNG  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/01/01
Vol. E93-A  No. 1  pp. 116-125
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Secure Protocol
Keyword: 
attribute based encryptionciphertext policykey policy
  Summary |  Full Text:PDF

Anonymous Password-Authenticated Key Exchange: New Construction and Its Extensions
SeongHan SHIN  Kazukuni KOBARA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/01/01
Vol. E93-A  No. 1  pp. 102-115
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Secure Protocol
Keyword: 
authenticated key exchangepasswordson-line/off-line dictionary attackspassword-authenticated key exchangeanonymityefficiencyprovable security
  Summary |  Full Text:PDF

Smallest Size of Circulant Matrix for Regular (3, L) and (4, L) Quasi-Cyclic LDPC Codes with Girth 6
Manabu HAGIWARA  Marc P.C. FOSSORIER  Takashi KITAGAWA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/11/01
Vol. E92-A  No. 11  pp. 2891-2894
Type of Manuscript: PAPER
Category: Coding Theory
Keyword: 
LDPC codesdifference matrixquasi-cyclic codesregular LDPC codescirculant matrixlower bounds
  Summary |  Full Text:PDF

Strong Anonymous Signature
Rui ZHANG  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/10/01
Vol. E92-A  No. 10  pp. 2487-2491
Type of Manuscript: Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Cryptography and Information Security
Keyword: 
anonymous signaturestrong anonymitygeneric and efficient constructions
  Summary |  Full Text:PDF

CCA-Secure Public Key Encryption without Group-Dependent Hash Functions
Yang CUI  Goichiro HANAOKA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2009/05/01
Vol. E92-D  No. 5  pp. 967-970
Type of Manuscript: Special Section LETTER (Special Section on Information and Communication System Security)
Category: Cryptographic Techniques
Keyword: 
CCA-secure public-key encryptiongroup-dependent hash
  Summary |  Full Text:PDF

Combining Public Key Encryption with Keyword Search and Public Key Encryption
Rui ZHANG  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2009/05/01
Vol. E92-D  No. 5  pp. 888-896
Type of Manuscript: Special Section PAPER (Special Section on Information and Communication System Security)
Category: Cryptographic Techniques
Keyword: 
PEKSPKEPEKS/PKECCA security
  Summary |  Full Text:PDF

A Trade-off Traitor Tracing Scheme
Go OHTAKE  Kazuto OGAWA  Goichiro HANAOKA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2009/05/01
Vol. E92-D  No. 5  pp. 859-875
Type of Manuscript: Special Section PAPER (Special Section on Information and Communication System Security)
Category: Contents Protection
Keyword: 
dynamic traitor tracingwatermarkingdigital rights managementcontent distribution
  Summary |  Full Text:PDF

A New Quaternion Design for Space-Time-Polarization Block Code with Full Diversity
Huanfei MA  Haibin KAN  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/02/01
Vol. E92-B  No. 2  pp. 671-674
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
MIMOSpace-Time block codeorthogonal designquaternion
  Summary |  Full Text:PDF

A Novel Probabilistic Passive Attack on the Protocols HB and HB+
Jose CARRIJO  Rafael TONICELLI  Hideki IMAI  Anderson C.A. NASCIMENTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/02/01
Vol. E92-A  No. 2  pp. 658-662
Type of Manuscript: LETTER
Category: Cryptography and Information Security
Keyword: 
authenticationprotocol HB/HB+cryptoanalysis
  Summary |  Full Text:PDF

An Efficient 2-Secure and Short Random Fingerprint Code and Its Security Evaluation
Koji NUIDA  Satoshi FUJITSU  Manabu HAGIWARA  Hideki IMAI  Takashi KITAGAWA  Kazuto OGAWA  Hajime WATANABE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/01/01
Vol. E92-A  No. 1  pp. 197-206
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Application
Keyword: 
fingerprintc-secure codecollusion attacksecurity analysiswatermarkDRM
  Summary |  Full Text:PDF

Tag-KEM from Set Partial Domain One-Way Permutations
Masayuki ABE  Yang CUI  Hideki IMAI  Kaoru KUROSAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/01/01
Vol. E92-A  No. 1  pp. 42-52
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Public Key Cryptography
Keyword: 
Tag-KEMhybrid encryptionOAEPSAEP
  Summary |  Full Text:PDF

Formal Security Treatments for IBE-to-Signature Transformation: Relations among Security Notions
Yang CUI  Eiichiro FUJISAKI  Goichiro HANAOKA  Hideki IMAI  Rui ZHANG 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/01/01
Vol. E92-A  No. 1  pp. 53-66
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Digital Signature
Keyword: 
identity based encryptiondigital signaturesecurity notions
  Summary |  Full Text:PDF

A Secure Construction for Threshold Anonymous Password-Authenticated Key Exchange
SeongHan SHIN  Kazukuni KOBARA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/11/01
Vol. E91-A  No. 11  pp. 3312-3324
Type of Manuscript: PAPER
Category: Cryptography and Information Security
Keyword: 
password authenticationkey exchangePAKEanonymityprovable security
  Summary |  Full Text:PDF

A New Security Architecture for Personal Networks and Its Performance Evaluation
SeongHan SHIN  Hanane FATHI  Kazukuni KOBARA  Neeli R. PRASAD  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/07/01
Vol. E91-B  No. 7  pp. 2255-2264
Type of Manuscript: PAPER
Category: Network
Keyword: 
personal networksleakage of stored secretsauthentication and key exchangeleakage-resilienceforward secrecysecurity architectureperformance evaluation
  Summary |  Full Text:PDF

A Strongly Unforgeable Signature under the CDH Assumption without Collision Resistant Hash Functions
Takahiro MATSUDA  Nuttapong ATTRAPADUNG  Goichiro HANAOKA  Kanta MATSUURA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/05/01
Vol. E91-D  No. 5  pp. 1466-1476
Type of Manuscript: Special Section PAPER (Special Section on Information and Communication System Security)
Category: Cryptographic Techniques
Keyword: 
digital signaturestrong unforgeabilitytarget collision resistant hash functionstandard model
  Summary |  Full Text:PDF

Wolf Attack Probability: A Theoretical Security Measure in Biometric Authentication Systems
Masashi UNE  Akira OTSUKA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/05/01
Vol. E91-D  No. 5  pp. 1380-1389
Type of Manuscript: Special Section PAPER (Special Section on Information and Communication System Security)
Category: Biometrics
Keyword: 
biometric authentication systembrute-force attackfinger-vein-pattern based algorithmminutiae-matching algorithmwolf attack probability
  Summary |  Full Text:PDF

RSA-Based Password-Authenticated Key Exchange, Revisited
SeongHan SHIN  Kazukuni KOBARA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/05/01
Vol. E91-D  No. 5  pp. 1424-1438
Type of Manuscript: Special Section PAPER (Special Section on Information and Communication System Security)
Category: Key Management
Keyword: 
password authenticationkey exchangeRSAon-line/off-line attackse-residue attacksprovable security
  Summary |  Full Text:PDF

Lightweight Privacy-Preserving Authentication Protocols Secure against Active Attack in an Asymmetric Way
Yang CUI  Kazukuni KOBARA  Kanta MATSUURA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/05/01
Vol. E91-D  No. 5  pp. 1457-1465
Type of Manuscript: Special Section PAPER (Special Section on Information and Communication System Security)
Category: Authentication
Keyword: 
lightweight protocolasymmetric authenticationprivacy-preservingactive attack
  Summary |  Full Text:PDF

Invisibly Sanitizable Digital Signature Scheme
Kunihiko MIYAZAKI  Goichiro HANAOKA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/01/01
Vol. E91-A  No. 1  pp. 392-402
Type of Manuscript: PAPER
Category: Cryptography and Information Security
Keyword: 
digital signatureinformation disclosureprivacy issue
  Summary |  Full Text:PDF

A Secure Authenticated Key Exchange Protocol for Credential Services
SeongHan SHIN  Kazukuni KOBARA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/01/01
Vol. E91-A  No. 1  pp. 139-149
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Protocols
Keyword: 
password authenticationkey exchangeleakage of stored secretsroaming protocolpassword-enabled PKIcredential servicesprovable security
  Summary |  Full Text:PDF

IVs to Skip for Immunizing WEP against FMS Attack
Kazukuni KOBARA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/01/01
Vol. E91-B  No. 1  pp. 164-171
Type of Manuscript: PAPER
Category: Fundamental Theories for Communications
Keyword: 
RC4WEPIEEE802.11WLANFMS attack
  Summary |  Full Text:PDF

Extension of Broadcasting Service by Using Electronic Tokens
Kazuto OGAWA  Goichiro HANAOKA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2007/11/01
Vol. E90-D  No. 11  pp. 1741-1750
Type of Manuscript: PAPER
Category: Contents Technology and Web Information Systems
Keyword: 
content distributiontokenanonymitygroup signatureprivacy preservation
  Summary |  Full Text:PDF

Key-Insulated Public Key Encryption with Auxiliary Helper Key: Model, Constructions and Formal Security Proofs
Thi Lan Anh PHAN  Goichiro HANAOKA  Kanta MATSUURA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/09/01
Vol. E90-A  No. 9  pp. 1814-1829
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
key insulated public key encryptionauxiliary helper keyIND-KE-CCA
  Summary |  Full Text:PDF

Efficient Identity-Based Encryption with Tight Security Reduction
Nuttapong ATTRAPADUNG  Jun FURUKAWA  Takeshi GOMI  Goichiro HANAOKA  Hideki IMAI  Rui ZHANG 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/09/01
Vol. E90-A  No. 9  pp. 1803-1813
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
identity based encryptiontight security reduction
  Summary |  Full Text:PDF

Birthday Paradox Based Security Analysis of Certain Broadcast Encryption Schemes
Miodrag J. MIHALJEVI  Marc P.C. FOSSORIER  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/06/01
Vol. E90-A  No. 6  pp. 1248-1251
Type of Manuscript: LETTER
Category: Information Security
Keyword: 
conditional data access controlbroadcast encryptioncryptographic key managementcryptanalysisbirthday paradox
  Summary |  Full Text:PDF

Traitor Tracing Scheme Secure against Adaptive Key Exposure and its Application to Anywhere TV Service
Kazuto OGAWA  Goichiro HANAOKA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/05/01
Vol. E90-A  No. 5  pp. 1000-1011
Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
traitor tracingkey exposurekey updatetwo variable-polynomial
  Summary |  Full Text:PDF

An Efficient and Leakage-Resilient RSA-Based Authenticated Key Exchange Protocol with Tight Security Reduction
SeongHan SHIN  Kazukuni KOBARA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/02/01
Vol. E90-A  No. 2  pp. 474-490
Type of Manuscript: PAPER
Category: Information Security
Keyword: 
authenticated key exchangepasswordson-line and off-line dictionary attacksRSAleakage of stored secretsefficiencyperfect forward secrecy
  Summary |  Full Text:PDF

Practical Broadcast Encryption from Graph-Theoretic Techniques and Subset-Incremental-Chain Structure
Nuttapong ATTRAPADUNG  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/01/01
Vol. E90-A  No. 1  pp. 187-203
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Application
Keyword: 
broadcast encryptionrevocation scheme
  Summary |  Full Text:PDF

Key-Dependent Weak IVs and Weak Keys in WEP--How to Trace Conditions Back to Their Patterns--
Kazukuni KOBARA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/08/01
Vol. E89-A  No. 8  pp. 2198-2206
Type of Manuscript: PAPER
Category: Information Security
Keyword: 
RC4WEPIEEE802.11WLANFMS attack
  Summary |  Full Text:PDF

An Efficient Group Signature Scheme from Bilinear Maps
Jun FURUKAWA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/05/01
Vol. E89-A  No. 5  pp. 1328-1338
Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
group signaturebilinear mapefficient
  Summary |  Full Text:PDF

A Provably Secure Refreshable Partially Anonymous Token and Its Applications
Rie SHIGETOMI  Akira OTSUKA  Jun FURUKAWA  Keith MARTIN  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/05/01
Vol. E89-A  No. 5  pp. 1396-1406
Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
anonymous credentialrefreshable tokensanonymityprivacy protection
  Summary |  Full Text:PDF

Efficient Algorithms for Tate Pairing
Tetsutaro KOBAYASHI  Kazumaro AOKI  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/01/01
Vol. E89-A  No. 1  pp. 134-143
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Elliptic Curve Cryptography
Keyword: 
Weil pairingTate pairingelliptic curve cryptosystemfast computation
  Summary |  Full Text:PDF

Relation between the XL Algorithm and Grobner Basis Algorithms
Makoto SUGITA  Mitsuru KAWAZOE  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/01/01
Vol. E89-A  No. 1  pp. 11-18
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Symmetric Key Cryptography
Keyword: 
algebraic attacksGrobner basis algorithmF4XL algorithm
  Summary |  Full Text:PDF

Flaws in Robust Optimistic Mix-Nets and Stronger Security Notions
Masayuki ABE  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/01/01
Vol. E89-A  No. 1  pp. 99-105
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Protocol
Keyword: 
Mix-netanonymitychosen-ciphertext attackssecurity notion
  Summary |  Full Text:PDF

Security Protocols Protection Based on Anomaly Detection
Abdulrahman ALHARBY  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/01/01
Vol. E89-D  No. 1  pp. 189-200
Type of Manuscript: Special Section PAPER (Special Section on New Technologies and their Applications of the Internet III)
Category: Intrusion Detection
Keyword: 
intrusion detectionsecurity protocolsanomaly detectiondynamic Bayesian network
  Summary |  Full Text:PDF

How to Break COT-Based Fingerprinting Schemes and Design New One
JaeGwi CHOI  Goichiro HANAOKA  KyungHyune RHEE  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/10/01
Vol. E88-A  No. 10  pp. 2800-2807
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Cryptography and Information Security
Keyword: 
fingerprintingcommitted oblivious transfer protocoltwo-lock cryptosystem
  Summary |  Full Text:PDF

A Flexible-Revocation Scheme for Efficient Public-Key Black-Box Traitor Tracing
Tatsuyuki MATSUSHITA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/04/01
Vol. E88-A  No. 4  pp. 1055-1062
Type of Manuscript: PAPER
Category: Information Security
Keyword: 
public-key traitor tracingblack-box tracingflexible revocation
  Summary |  Full Text:PDF

A Simple Leakage-Resilient Authenticated Key Establishment Protocol, Its Extensions, and Applications
SeongHan SHIN  Kazukuni KOBARA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/03/01
Vol. E88-A  No. 3  pp. 736-754
Type of Manuscript: PAPER
Category: Information Security
Keyword: 
entropy of passwordson-line and off-line attacksauthenticationkey establishment protocolleakage of stored secretsproactive securityDDH problemstandard model
  Summary |  Full Text:PDF

Digitally Signed Document Sanitizing Scheme with Disclosure Condition Control
Kunihiko MIYAZAKI  Mitsuru IWAMURA  Tsutomu MATSUMOTO  Ryoichi SASAKI  Hiroshi YOSHIURA  Satoru TEZUKA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/01/01
Vol. E88-A  No. 1  pp. 239-246
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Application
Keyword: 
digital signaturedisclosure of official informationprivacy issue
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Personal Entropy from Graphical Passwords: Methods for Quantification and Practical Key Generation
Masato AKAO  Shinji YAMANAKA  Goichiro HANAOKA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/10/01
Vol. E87-A  No. 10  pp. 2543-2554
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Cryptography and Information Security
Keyword: 
personal entropygraphical passwordsbiometricshumancryptkey generation
  Summary |  Full Text:PDF

Information-Theoretically Secure Key Insulated Encryption: Models, Bounds and Constructions
Yumiko HANAOKA  Goichiro HANAOKA  Junji SHIKATA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/10/01
Vol. E87-A  No. 10  pp. 2521-2532
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Cryptography and Information Security
Keyword: 
key exposurekey-insulated encryptionunconditional security
  Summary |  Full Text:PDF

The Role of Arbiters for Unconditionally Secure Authentication
Goichiro HANAOKA  Junji SHIKATA  Yumiko HANAOKA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/05/01
Vol. E87-A  No. 5  pp. 1132-1140
Type of Manuscript: Special Section LETTER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
authentication codearbiterunconditional security
  Summary |  Full Text:PDF

Unconditionally Secure Authenticated Encryption
Junji SHIKATA  Goichiro HANAOKA  Yuliang ZHENG  Tsutomu MATSUMOTO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/05/01
Vol. E87-A  No. 5  pp. 1119-1131
Type of Manuscript: Special Section LETTER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
unconditional securityencryptionauthenticated encryptionsigncryption
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Traceability Schemes against Illegal Distribution of Signed Documents
Shoko YONEZAWA  Goichiro HANAOKA  Junji SHIKATA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/05/01
Vol. E87-A  No. 5  pp. 1172-1182
Type of Manuscript: Special Section LETTER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
signed documentillegal distributiontraceabilitygroup signaturepartially blind signature
  Summary |  Full Text:PDF

Managing Encryption and Key Publication Independently in Digital Rights Management Systems
Goichiro HANAOKA  Kazuto OGAWA  Itsuro MUROTA  Go OHTAKE  Keigo MAJIMA  Seiichi GOHSHI  Kimiyuki OYAMADA  Seiichi NAMBA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/01/01
Vol. E87-A  No. 1  pp. 160-172
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Applications
Keyword: 
digital rights management systemscopyright protectionsemantic securityadaptive attacks
  Summary |  Full Text:PDF

Efficient Unconditionally Secure Digital Signatures
Goichiro HANAOKA  Junji SHIKATA  Yuliang ZHENG  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/01/01
Vol. E87-A  No. 1  pp. 120-130
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Asymmetric Cipher
Keyword: 
digital signatureunconditional security
  Summary |  Full Text:PDF

Constructing c-Secure CRT Codes Using Polynomials over Finite Fields
Mira KIM  Junji SHIKATA  Hirofumi MURATANI  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/12/01
Vol. E86-A  No. 12  pp. 3259-3266
Type of Manuscript: PAPER
Category: Information Security
Keyword: 
fingerprintingcollusion attacksChinese remainder theorem (CRT)
  Summary |  Full Text:PDF

Performance of SUD and MUD Interference Cancellation Receivers in Single-Cell and Multi-Cell CDMA Systems
Jonas KARLSSON  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/10/01
Vol. E86-B  No. 10  pp. 2996-3003
Type of Manuscript: PAPER
Category: Wireless Communication Technology
Keyword: 
interference cancellationcellular systemsCDMA
  Summary |  Full Text:PDF

Irregular Low-Density Parity-Check Code Design Based on Euclidean Geometries
Wataru MATSUMOTO  Weigang XU  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/07/01
Vol. E86-A  No. 7  pp. 1820-1834
Type of Manuscript: PAPER
Category: Coding Theory
Keyword: 
Euclidean geometrylow-density parity-check codeirregular LDPC code
  Summary |  Full Text:PDF

CDMA Multi-Cell Performance of Combined Serial Interference Canceller and Normalized Griffiths' Algorithm
Jonas KARLSSON  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/01/01
Vol. E86-B  No. 1  pp. 162-169
Type of Manuscript: Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
Category: 
Keyword: 
interference cancellationsingle-user detectormulti-user detectorcellular systemsCDMA
  Summary |  Full Text:PDF

Best Truncated and Impossible Differentials of Feistel Block Ciphers with S-D (Substitution and Diffusion) or D-S Round Functions
Makoto SUGITA  Kazukuni KOBARA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/01/01
Vol. E86-A  No. 1  pp. 2-12
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Symmetric Ciphers and Hash Functions
Keyword: 
block cipher camelliatruncated differential cryptanalysisimpossible differential cryptanalysis
  Summary |  Full Text:PDF

Effect of Noisy Estimation on Turbo-Coded Modulation over Flat Rayleigh Fading Channels
Tadashi MINOWA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/10/01
Vol. E85-A  No. 10  pp. 2211-2219
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
flat-Rayleigh fading channelnoisy channel estimatechannel capacityturbo-coded modulation
  Summary |  Full Text:PDF

Pretty-Simple Password-Authenticated Key-Exchange Protocol Proven to be Secure in the Standard Model
Kazukuni KOBARA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/10/01
Vol. E85-A  No. 10  pp. 2229-2237
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Information Security
Keyword: 
entropy of passwordskey exchangeauthenticationDDH problemstandard model
  Summary |  Full Text:PDF

Semantically Secure McEliece Public-Key Cryptosystem
Kazukuni KOBARA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/01/01
Vol. E85-A  No. 1  pp. 74-83
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
McEliece public-key cryptosystemsemantic securityprovable securityconversioncoding theory
  Summary |  Full Text:PDF

A Traitor Traceable Conference System with Dynamic Sender
Goichiro HANAOKA  Junji SHIKATA  Yuliang ZHENG  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/01/01
Vol. E85-A  No. 1  pp. 167-174
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
traitor traceable schemeauthentication schemedynamic senderunconditional security
  Summary |  Full Text:PDF

Cryptanalysis of TOYOCRYPT-HS1 Stream Cipher
Miodrag J. MIHALJEVIC  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/01/01
Vol. E85-A  No. 1  pp. 66-73
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
stream cipherkeystream generatorslinear feedback shift registersnonlinear filtercryptanalysis
  Summary |  Full Text:PDF

An Unconditionally Secure Electronic Cash Scheme with Computational Untraceability
Akira OTSUKA  Goichiro HANAOKA  Junji SHIKATA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/01/01
Vol. E85-A  No. 1  pp. 140-148
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
electronic cashinformation theoretic securityunconditionally secure signature
  Summary |  Full Text:PDF

Reliability-Based Decoding Algorithm in Multistage Decoding of Multilevel Codes
Motohiko ISAKA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/10/01
Vol. E84-A  No. 10  pp. 2528-2531
Type of Manuscript: Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Communication Systems
Keyword: 
multilevel codemultistage decodingpartitioning reliability-based decodingordered statistics
  Summary |  Full Text:PDF

A Novel Method of Reducing the Decoding Complexity for High-Rate Turbo Codes
Tadashi MINOWA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/08/01
Vol. E84-B  No. 8  pp. 2151-2160
Type of Manuscript: PAPER
Category: Fundamental Theories
Keyword: 
turbo codehigh-rate convolutional codereduced-complexity decoding
  Summary |  Full Text:PDF

Improving the Secure Electronic Transaction Protocol by Using Signcryption
Goichiro HANAOKA  Yuliang ZHENG  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/08/01
Vol. E84-A  No. 8  pp. 2042-2051
Type of Manuscript: PAPER
Category: Information Security
Keyword: 
signcryptionSETcomputational overheadmessage overhead
  Summary |  Full Text:PDF

On Decoding Techniques for Cryptanalysis of Certain Encryption Algorithms
Miodrag J. MIHALJEVIC  Marc P. C. FOSSORIER  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/04/01
Vol. E84-A  No. 4  pp. 919-930
Type of Manuscript: Special Section PAPER (Special Section on Fundamentals of Information and Communications)
Category: 
Keyword: 
decodingcryptanalysiskeystream generatorsfast correlation attack
  Summary |  Full Text:PDF

Development of Cryptology in the Nineties
Hideki IMAI  Junji SHIKATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/01/01
Vol. E84-A  No. 1  pp. 61-67
Type of Manuscript: INVITED PAPER (Special Section on the 10th Anniversary of the IEICE Transactions of Fundamentals: "Last Decade and 21st Century")
Category: 
Keyword: 
cryptologysecret-key cryptographypublic-key cryptographykey managementhumancrypt
  Summary |  Full Text:PDF

A Digital Signature Scheme on ID-Based Key-Sharing Infrastructures
Tsuyoshi NISHIOKA  Goichiro HANAOKA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/01/01
Vol. E84-A  No. 1  pp. 214-221
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
key predistribution systemID-based cryptosystemdigital signature
  Summary |  Full Text:PDF

Optimal Unconditionally Secure ID-Based Key Distribution Scheme for Large-Scaled Networks
Goichiro HANAOKA  Tsuyoshi NISHIOKA  Yuliang ZHENG  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/01/01
Vol. E84-A  No. 1  pp. 222-230
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
key predistribution systemID-based cryptosystemcollusion attack
  Summary |  Full Text:PDF

An Image Correction Scheme for Video Watermarking Extraction
Akihiko KUSANAGI  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/01/01
Vol. E84-A  No. 1  pp. 273-280
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
digital watermarkingMPEGimage correctionpatchwork algorithmgeometrical alteration
  Summary |  Full Text:PDF

An Algorithm for Cryptanalysis of Certain Keystream Generators Suitable for High-Speed Software and Hardware Implementations
Miodrag J. MIHALJEVIC  Marc P. C. FOSSORIER  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/01/01
Vol. E84-A  No. 1  pp. 311-318
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
stream cipherkeystream generatorslinear feedback shift registersfast correlation attackdecoding
  Summary |  Full Text:PDF

Hierarchical Coding Based on Multilevel Bit-Interleaved Channels
Motohiko ISAKA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/01/01
Vol. E84-B  No. 1  pp. 1-9
Type of Manuscript: PAPER
Category: Fundamental Theories
Keyword: 
multilevel codingbit-interleavingunequal error protectionmultistage decoding
  Summary |  Full Text:PDF

An Optimization of Credit-Based Payment for Electronic Toll Collection Systems
Goichiro HANAOKA  Tsuyoshi NISHIOKA  Yuliang ZHENG  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/08/20
Vol. E83-A  No. 8  pp. 1681-1690
Type of Manuscript: PAPER
Category: Information Security
Keyword: 
credit-based paymentelectronic toll collection systemkey predistribution systemID-based cryptosystemcollusion attack
  Summary |  Full Text:PDF

Tradeoffs between Error Performance and Decoding Complexity in Multilevel 8-PSK Codes with UEP Capabilities and Multistage Decoding
Motohiko ISAKA  Robert H. MORELOS-ZARAGOZA  Marc P. C. FOSSORIER  Shu LIN  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/08/20
Vol. E83-A  No. 8  pp. 1704-1712
Type of Manuscript: PAPER
Category: Coding Theory
Keyword: 
multilevel codesmultistage decodingtradeoffsdecoding complexityerror performance
  Summary |  Full Text:PDF

Modified Aggressive Mode of Internet Key Exchange Resistant against Denial-of-Service Attacks
Kanta MATSUURA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2000/05/20
Vol. E83-D  No. 5  pp. 972-979
Type of Manuscript: Special Section PAPER (Special Issue on Next Generation Internet Technologies and Their Applications)
Category: 
Keyword: 
InternetsecurityIKEDenial-of-ServiceCookie
  Summary |  Full Text:PDF

Realizing the Menezes-Okamoto-Vanstone (MOV) Reduction Efficiently for Ordinary Elliptic Curves
Junji SHIKATA  Yuliang ZHENG  Joe SUZUKI  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/04/20
Vol. E83-A  No. 4  pp. 756-763
Type of Manuscript: PAPER
Category: Information Security
Keyword: 
elliptic curve cryptographyelliptic curve discrete logarithm problemMenezes-Okamoto-Vanstone (MOV) algorithmsupersingular elliptic curvesordinary elliptic curves
  Summary |  Full Text:PDF

A Family of Fast Keystream Generators Based on Programmable Linear Cellular Automata over GF (q) and Time-Variant Table
Miodrag MIHALJEVIC  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/01/20
Vol. E82-A  No. 1  pp. 32-39
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
data encryptionstream cipherkeystream generatorscellular automata
  Summary |  Full Text:PDF

A Family of Fast Dedicated One-Way Hash Functions Based on Linear Cellular Automata over GF(q)
Miodrag MIHALJEVIC  Yuliang ZHENG  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/01/20
Vol. E82-A  No. 1  pp. 40-47
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
information integritycryptographic hash-functionscellular automata
  Summary |  Full Text:PDF

Coded Modulation for Satellite Broadcasting Based on Unconventional Partitionings
Motohiko ISAKA  Robert H. MORELOS-ZARAGOZA  Marc P. C. FOSSORIER  Shu LIN  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/10/20
Vol. E81-A  No. 10  pp. 2055-2063
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coded Modulation
Keyword: 
block coded modulationmultistage decodingunequal error protectionunconventional partitioningssatellite broadcasting
  Summary |  Full Text:PDF

Multi-Dimensional Turbo Codes: Performance and Simplified Decoding Structure
Jifeng LI  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/11/20
Vol. E80-A  No. 11  pp. 2089-2094
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
multi-dimensional turbo codeiterative decodingMAP algorithminterleaver
  Summary |  Full Text:PDF

Block Coding Scheme Based on Complementary Sequences for Multicarrier Signals
Hideki OCHIAI  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/11/20
Vol. E80-A  No. 11  pp. 2136-2143
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Communications/Coded Modulation/Spread Spectrum
Keyword: 
multicarrier modulationmultiphase complementary sequencepeak to average power ratioblock coding
  Summary |  Full Text:PDF

FOREWORD
Shojiro SAKATA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/11/20
Vol. E80-A  No. 11  pp. 2051-2051
Type of Manuscript: FOREWORD
Category: 
Keyword: 
  Summary |  Full Text:PDF

On Strictly Geometrically Uniform Codes: Construction and New Codes
Oscar Yassuo TAKESHITA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/03/20
Vol. E80-A  No. 3  pp. 590-597
Type of Manuscript: PAPER
Category: Information Theory and Coding Theory
Keyword: 
geometrically uniform codesgroup codestrellis code
  Summary |  Full Text:PDF

Coded Modulation for Satellite Digital Video Broadcasting
Robert MORELOS-ZARAGOZA  Oscar Yassuo TAKESHITA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/09/20
Vol. E79-A  No. 9  pp. 1355-1360
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coded Modulation
Keyword: 
coded modulationdigital videosatellite broadcasting
  Summary |  Full Text:PDF

Viterbi Decoding Considering Synchronization Errors
Takuo MORI  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/09/20
Vol. E79-A  No. 9  pp. 1324-1329
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
synchronization errorinsertion/deletion errorViterbi decodingLevenshtein distance
  Summary |  Full Text:PDF

MFSK/FH-CDMA System with Two-Stage Address Coding and Error Correcting Coding and Decoding
Weidong MAO  Ryuji KOHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/09/20
Vol. E78-A  No. 9  pp. 1117-1126
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
two-stage codingMFSKFH-CDMAaddress codemulti-user detectionerasure decoding
  Summary |  Full Text:PDF

A Simple Method to Control Indirect Information Flows
Satoshi OZAKI  Tsutomu MATSUMOTO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/11/20
Vol. E77-A  No. 11  pp. 1938-1941
Type of Manuscript: Special Section LETTER (Special Section of Letters Selected from the 1994 IEICE Spring Conference)
Category: 
Keyword: 
access controlflow controlinformation flowinformation securityUNIX
  Summary |  Full Text:PDF

Multilevel RLL (D,K,l) Constrained Sequences
Oscar Yassuo TAKESHITA  Ryuji KOHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/08/20
Vol. E77-A  No. 8  pp. 1238-1245
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
runlength limited sequencesrecording signalschannel capacitypower spectra density
  Summary |  Full Text:PDF

Variable Error Controlling Schemes for Intelligent Error Controlling Systems
Taroh SASAKI  Ryuji KOHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/08/20
Vol. E77-A  No. 8  pp. 1281-1288
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
error correcting codesunequal error protectionvariable error controlimportanceintelligent communication
  Summary |  Full Text:PDF

An Error-Controlling Scheme according to the Importance of Individual Segments of Model-Based Coded Facial Images
Noriko SUZUKI  Taroh SASAKI  Ryuji KOHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/08/20
Vol. E77-A  No. 8  pp. 1289-1297
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
human communicationfacial image codingintelligent error-controllingunequal error protection codesmodel-based coding
  Summary |  Full Text:PDF

Adaptive Array Antenna Based on Spatial Spectral Estimation Using Maximum Entropy Method
Minami NAGATSUKA  Naoto ISHII  Ryuji KOHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/05/20
Vol. E77-B  No. 5  pp. 624-633
Type of Manuscript: Special Section PAPER (Special Issue on Adaptive Signal Processing in Mobile Radio Communications)
Category: 
Keyword: 
adaptive array antennamaximum entropy methodspatial samplingtemporal sampling
  Summary |  Full Text:PDF

Shared Pseudo-Random Secret Generation Protocols
Manuel CERECEDO  Tsutomu MATSUMOTO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/04/20
Vol. E77-A  No. 4  pp. 636-645
Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
information securitycryptographypseudo-random number generationsecret sharing schemesnon-interactive secure computation
  Summary |  Full Text:PDF

A Fast Automatic Fingerprint Identification Method Based on a Weighted-Mean of Binary Image
Yu HE  Ryuji KOHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/09/20
Vol. E76-A  No. 9  pp. 1469-1482
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
automatic fingerprint identificationpattern recognitionweighted-meanoptimizationpersonal identification
  Summary |  Full Text:PDF

Asymptotic Bounds for Unidirectional Byte Error-Correcting Codes
Yuichi SAITOH  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/09/20
Vol. E76-A  No. 9  pp. 1437-1441
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
asymptotic bounderror-correction codinggeneralized concatenated codingunidirectional byte errorVarshamov-Gilbert bound
  Summary |  Full Text:PDF

Multihopping and Decoding of Error-Correcting Code for MFSK/FH-SSMA Systems
Tetsuo MABUCHI  Ryuji KOHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/08/20
Vol. E76-B  No. 8  pp. 874-885
Type of Manuscript: Special Section PAPER (Special Issue on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
spread spectrum multiple accessfrequency hoppingerror-correcting code
  Summary |  Full Text:PDF

Implementation of an Industrial R/C System Using a Hybrid DS/FH Spread Spectrum Technique
Atsushi HOSHIKUKI  Michio YAMAMOTO  Satoru ISHII  Ryuji KOHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/08/20
Vol. E76-B  No. 8  pp. 984-989
Type of Manuscript: Special Section PAPER (Special Issue on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
industrial R/C systemhybrid DS/FHDSFHspread spectrum
  Summary |  Full Text:PDF

Efficient and Secure Multiparty Generation of Digital Signatures Based on Discrete Logarithms
Manuel CERECEDO  Tsutomu MATSUMOTO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/04/20
Vol. E76-A  No. 4  pp. 532-545
Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
information securitycryptographydigital signaturesmultiparty protocolsnoninteracitve secure computationdiscrete log-based cryptosystems
  Summary |  Full Text:PDF

Construction Techniques for Error-Control Runlength-Limited Block Codes
Yuichi SAITOH  Takahiro OHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/03/20
Vol. E76-A  No. 3  pp. 453-458
Type of Manuscript: PAPER
Category: Information Theory and Coding Theory
Keyword: 
coding theory(d,k) constraintserror-correction codingerror-detection codingmodulation coding,recording code
  Summary |  Full Text:PDF

Cascaded Co-Channel Interference Cancelling and Diversity Combining for Spread-Spectrum Multi-Access over Multipath Fading Channels
Young C. YOON  Ryuji KOHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/02/20
Vol. E76-B  No. 2  pp. 163-168
Type of Manuscript: Special Section LETTER (Special Issue on Land Mobile/Portable Propagation)
Category: 
Keyword: 
spread-spectrum multi-accessco-channel interference cancellationdiversity combiningmultipath fading
  Summary |  Full Text:PDF

Adaptive Equalization with Dual Diversity-Combining
Kouei MISAIZU  Takashi MATSUOKA  Hiroshi OHNISHI  Ryuji KOHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/02/20
Vol. E76-B  No. 2  pp. 131-138
Type of Manuscript: Special Section PAPER (Special Issue on Land Mobile/Portable Propagation)
Category: 
Keyword: 
adaptive equalizerdual diversity-combiningdigital mobile radio communicationmultipath fading channel
  Summary |  Full Text:PDF

Methods to Securely Realize Caller-Authenticated and Callee-Specified Telephone Calls
Tomoyuki ASANO  Tsutomu MATSUMOTO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/01/20
Vol. E76-A  No. 1  pp. 88-95
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
information securitypersonalized telecommunicationcaller authenticationcallee specificationkey predistribution systemcryptography
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Median Differential Order Statistic Filters
Peiheng QI  Ryuji KOHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1992/09/20
Vol. E75-A  No. 9  pp. 1100-1109
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
median filterorder statistic filtermedian differential order informationpiecewise linear functionoutput mean square error
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An Error-Controlling Scheme Based on Different Importance of Segments of a Natural Language
Taroh SASAKI  Ryuji KOHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1992/09/20
Vol. E75-A  No. 9  pp. 1076-1086
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
intelligent communicationerror-correcting codesnatural language
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Runlength-Limited Short-Length Codes for Unidirectional-Byte-Error-Control
Yuichi SAITOH  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1992/09/20
Vol. E75-A  No. 9  pp. 1057-1062
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
byte errorscoding/decodingerror-correction codingmemory fault-tolerancerecording codeunidirectional error
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Runlength-Limited Codes which Turn Peak-Shift Errors into Unidirectional Byte Errors
Yuichi SAITOH  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1992/07/20
Vol. E75-A  No. 7  pp. 898-900
Type of Manuscript: Special Section LETTER (Special Section on the 1992 IEICE Spring Conference)
Category: 
Keyword: 
coding theoryrecording codeerror-correcting codeconcatenated codepeak-shift errorunidirectional byte error
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A Multi-Purpose Proof System and Its Analysis
Chaosheng SHU  Tsutomu MATSUMOTO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1992/06/20
Vol. E75-A  No. 6  pp. 735-743
Type of Manuscript: PAPER
Category: Information Security and Cryptography
Keyword: 
identity proofmembership proofzero-knowledge proof
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Proving Identity in Three Moves
Yuliang ZHENG  Tsutomu MATSUMOTO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1991/11/20
Vol. E74-A  No. 11  pp. 3602-3606
Type of Manuscript: PAPER
Category: Information Security and Cryptography
Keyword: 
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New Decoding Techniques for Punctured Convolutional Codes
Pisit CHARN KEIT KONG  Yuichi SAITOH  Kazuhiko YAMAGUCHI  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1991/09/20
Vol. E74-A  No. 9  pp. 2571-2578
Type of Manuscript: Special Section PAPER (Special Issue on Information Theory and Its Applications)
Category: 
Keyword: 
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Recent Applications of Error-Correcting Codes
Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1991/09/20
Vol. E74-A  No. 9  pp. 2473-2482
Type of Manuscript: INVITED PAPER (Special Issue on Information Theory and Its Applications)
Category: 
Keyword: 
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New Binary Encoding Schemes of Positive Integers
Yoko MIYAKAWA  Yuichi SAITOH  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1991/09/20
Vol. E74-A  No. 9  pp. 2504-2512
Type of Manuscript: Special Section PAPER (Special Issue on Information Theory and Its Applications)
Category: 
Keyword: 
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Performance of Multihop Fast Frequency Hopping/Spread Spectrum Multiple Access System in a Selective Fading Channel
Hideya YAMAMURA  Ryuji KOHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1991/05/20
Vol. E74-B  No. 5  pp. 1145-1154
Type of Manuscript: Special Section PAPER (Special Issue on Spread Spectrum Techniques and Its Applications)
Category: 
Keyword: 
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Pseudo-Noise Sequences for Tracking and Data Relay Satellite and Related Systems
Hidenobu FUKUMASA  Ryuji HOHNO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1991/05/20
Vol. E74-B  No. 5  pp. 1137-1144
Type of Manuscript: Special Section PAPER (Special Issue on Spread Spectrum Techniques and Its Applications)
Category: 
Keyword: 
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Information Security of Spread Spectrum Systems
Hideki IMAI  Ryuji KOHNO  Tsutomu MATSUMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1991/03/20
Vol. E74-A  No. 3  pp. 488-505
Type of Manuscript: INVITED PAPER
Category: 
Keyword: 
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Connections among Several Versions of One-Way Hash Functions
Yuliang ZHENG  Tsutomu MATSUMOTO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/07/20
Vol. E73-E  No. 7  pp. 1092-1099
Type of Manuscript: Special Section PAPER (Special Issue on Cryptography and Information Security)
Category: Authentication Techniques
Keyword: 
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On Generating Cryptographically Desirable Substitutions
Kwangjo KIM  Tsutomu MATSUMOTO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/07/20
Vol. E73-E  No. 7  pp. 1031-1035
Type of Manuscript: Special Section PAPER (Special Issue on Cryptography and Information Security)
Category: Common-Key Systems
Keyword: 
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Recent Development of Cryptology in Japan
Hideki IMAI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/07/20
Vol. E73-E  No. 7  pp. 1026-1030
Type of Manuscript: REVIEW PAPER
Category: 
Keyword: 
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A Prototype KPS and Its Application--IC Card Based Key Sharing and Cryptographic Communication--
Tsutomu MATSUMOTO  Youichi TAKASHIMA  Hideki IMAI  Minoru SASAKI  Hiroharu YOSHIKAWA  Shin-ichiro WATANABE 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/07/20
Vol. E73-E  No. 7  pp. 1111-1119
Type of Manuscript: Special Section PAPER (Special Issue on Cryptography and Information Security)
Category: Applications
Keyword: 
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Several Theorems on Probabilistic Cryptosystems
Yuliang ZHENG  Tsutomu MATSUMOTO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1989/07/20
Vol. E72-E  No. 7  pp. 819-827
Type of Manuscript: PAPER
Category: Foundations of Data Security
Keyword: 
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Residuosity Problem and Its Applications to Cryptography
Yuliang ZHENG  Tsutomu MATSUMOTO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/08/20
Vol. E71-E  No. 8  pp. 759-767
Type of Manuscript: PAPER
Category: Foundations of Data Security
Keyword: 
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On Seeking Smart Public-Key-Distribution Systems
Tsutomu MATSUMOTO  Youichi TAKASHIMA  Hideki IMAI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1986/02/20
Vol. E69-E  No. 2  pp. 99-106
Type of Manuscript: PAPER
Category: Information and Communication Theory
Keyword: 
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A Cryptographically Useful Theorem on the Connection between Uni and Multivariate Polynomials
Tsutomu MATSUMOTO  Hideki IMAI  Hiroshi HARASHIMA  Hiroshi MIYAKAWA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1985/03/20
Vol. E68-E  No. 3  pp. 139-146
Type of Manuscript: PAPER
Category: Cryptography
Keyword: 
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Boolean-Function Representations of a Mapping
Tsutomu MATSUMOTO  Hideki IMAI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1982/06/20
Vol. E65-E  No. 6  pp. 337-344
Type of Manuscript: PAPER
Category: Computers
Keyword: 
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