Yuji HASHIMOTO


Tight Security of Twin-DH Hashed ElGamal KEM in Multi-User Setting
Yuji HASHIMOTO Koji NUIDA Goichiro HANAOKA 
Publication:   
Publication Date: 2022/03/01
Vol. E105-A  No. 3  pp. 173-181
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
twin-DH hashed ElGamalmulti-user setting
 Summary | Full Text:PDF

Toward Finite-Runtime Card-Based Protocol for Generating a Hidden Random Permutation without Fixed Points
Yuji HASHIMOTO Koji NUIDA Kazumasa SHINAGAWA Masaki INAMURA Goichiro HANAOKA 
Publication:   
Publication Date: 2018/09/01
Vol. E101-A  No. 9  pp. 1503-1511
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
card-based protocolpermutation without fixed points
 Summary | Full Text:PDF

Secure Grouping Protocol Using a Deck of Cards
Yuji HASHIMOTO Kazumasa SHINAGAWA Koji NUIDA Masaki INAMURA Goichiro HANAOKA 
Publication:   
Publication Date: 2018/09/01
Vol. E101-A  No. 9  pp. 1512-1524
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
card-based protocolpermutation
 Summary | Full Text:PDF