Jun FURUKAWA


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 (321.1KB)

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
  Summary |  Full Text:PDF (886.4KB)

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 (342.9KB)

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 (266.2KB)

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 (280.8KB)

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 (231.2KB)

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 (255.7KB)

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 (451.4KB)

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: 1999/06/20
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 (394.8KB)