Natsume MATSUZAKI


Private Similarity Searchable Encryption for Euclidean Distance
Yuji UNAGAMI Natsume MATSUZAKI Shota YAMADA Nuttapong ATTRAPADUNG Takahiro MATSUDA Goichiro HANAOKA 
Publication:   
Publication Date: 2017/10/01
Vol. E100-D  No. 10  pp. 2319-2326
Type of Manuscript:  Special Section PAPER (Special Section on Security, Privacy and Anonymity in Computation, Communication and Storage Systems)
Category: Operating system and network Security
Keyword: 
searchable encryptioninner product encryptionthe weighted Euclidean distance
 Summary | Full Text:PDF(473.7KB)

A Flexible Tree-Based Key Management Framework
Natsume MATSUZAKI Toshihisa NAKANO Tsutomu MATSUMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/01/01
Vol. E86-A  No. 1  pp. 129-135
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Protocols etc.
Keyword: 
key managementframeworktree-basedmultiple content distribution systems
 Summary | Full Text:PDF(227.8KB)

A Flexible Method for Masked Sharing of Group Keys
Jun ANZAI Natsume MATSUZAKI Tsutomu MATSUMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/01/01
Vol. E84-A  No. 1  pp. 239-246
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
broadcast encryptionuser exclusion problem
 Summary | Full Text:PDF(271.9KB)