Jun FURUKAWA


A Secrecy Criterion for Outsourcing Encrypted Databases Based on Inference Analysis
Yasunori ISHIHARA Yasuhiro USHIROZAKO Kengo MORI Jun FURUKAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2015/06/01
Vol. E98-D  No. 6  pp. 1161-1165
Type of Manuscript:  Special Section LETTER (Special Section on Formal Approach)
Category: Database Security
Keyword: 
encrypted databasesecrecyinference analysisdecidability
 Summary | Full Text:PDF(259.4KB)

Anonymous Credential with Attributes Certification after Registration
Isamu TERANISHI Jun FURUKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/01/01
Vol. E95-A  No. 1  pp. 125-137
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Authentication
Keyword: 
anonymous credentialcertification after registrationattribute-based certificatenon-interactive certificationhuge attributes
 Summary | Full Text:PDF(320.1KB)

k-Times Anonymous Authentication
Isamu TERANISHI Jun FURUKAWA Kazue SAKO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/01/01
Vol. E92-A  No. 1  pp. 147-165
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Secure Protocol
Keyword: 
group signaturek-times anonymous authenticationpublic verifiability
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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(341.8KB)

An Efficient Publicly Verifiable Mix-Net for Long Inputs
Jun FURUKAWA Kazue SAKO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/01/01
Vol. E90-A  No. 1  pp. 113-127
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Protocols
Keyword: 
hybrid-mixpublic verifiabilitymultiple encryptionefficient
 Summary | Full Text:PDF(265.1KB)

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(280KB)

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(230.2KB)

Efficient and Verifiable Shuffling and Shuffle-Decryption
Jun FURUKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/01/01
Vol. E88-A  No. 1  pp. 172-188
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Application
Keyword: 
votingshuffledecryptioncomplete permutation hiding
 Summary | Full Text:PDF(256.2KB)

Secure Detection of Watermarks
Jun FURUKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/01/01
Vol. E87-A  No. 1  pp. 212-220
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Applications
Keyword: 
watermarkonline detectionpatchworkcorrelation-basedpublic keypaillier cryptosystemzero-knowledge
 Summary | Full Text:PDF(452.3KB)

Block Matching Motion Estimation Based on Median Cut Quantization for MPEG Video
Hitoshi KIYA Jun FURUKAWA Yoshihiro NOGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/06/25
Vol. E82-A  No. 6  pp. 899-904
Type of Manuscript:  Special Section PAPER (Special Section of Papers Selected from 1998 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC '98))
Category: 
Keyword: 
motion estimationless gray level imagesmedian cut quantization
 Summary | Full Text:PDF(392.5KB)