Hiroshi DOI


A Fully Secure Spatial Encryption Scheme
Daisuke MORIYAMA  Hiroshi DOI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/01/01
Vol. E94-A  No. 1  pp. 28-35
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Public Key Cryptography
Keyword: 
identity based encryptionspatial encryptionfull security
  Summary |  Full Text:PDF (375.8KB)

Secure and Efficient IBE-PKE Proxy Re-Encryption
Takeo MIZUNO  Hiroshi DOI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/01/01
Vol. E94-A  No. 1  pp. 36-44
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Public Key Cryptography
Keyword: 
proxy re-encryptionpublic key encryptionidentity-based encryptionbilinear maps
  Summary |  Full Text:PDF (383.9KB)

An ID-SP-M4M Scheme and Its Security Analysis
Lihua WANG  Eiji OKAMOTO  Ying MIAO  Takeshi OKAMOTO  Hiroshi DOI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/01/01
Vol. E90-A  No. 1  pp. 91-100
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Signatures
Keyword: 
series-parallel multisignaturepairingID-basedBDH assumption
  Summary |  Full Text:PDF (317.9KB)

An Electronic Voting Protocol Preserving Voter's Privacy
Hiroshi YAMAGUCHI  Atsushi KITAZAWA  Hiroshi DOI  Kaoru KUROSAWA  Shigeo TSUJII 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2003/09/01
Vol. E86-D  No. 9  pp. 1868-1878
Type of Manuscript: PAPER
Category: Applications of Information Security Techniques
Keyword: 
electronic votingprivacyprotocolcryptographic system
  Summary |  Full Text:PDF (398.1KB)