Kosei SAKAMOTO


MILP-Aided Security Evaluation of Differential Attacks on KCipher-2
Jin HOKI Kosei SAKAMOTO Fukang LIU Kazuhiko MINEMATSU Takanori ISOBE 
Publication:   
Publication Date: 2021/01/01
Vol. E104-A  No. 1  pp. 203-212
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
stream cipherKCipher-2differential attackactive S-boxMILP
 Summary | Full Text:PDF

Tweakable TWINE: Building a Tweakable Block Cipher on Generalized Feistel Structure
Kosei SAKAMOTO Kazuhiko MINEMATSU Nao SHIBATA Maki SHIGERI Hiroyasu KUBO Yuki FUNABIKI Andrey BOGDANOV Sumio MORIOKA Takanori ISOBE 
Publication:   
Publication Date: 2020/12/01
Vol. E103-A  No. 12  pp. 1629-1639
Type of Manuscript:  PAPER
Category: Cryptography and Information Security
Keyword: 
twekakble block ciphergeneralized feistel structureTWINEMILP
 Summary | Full Text:PDF

Security of Related-Key Differential Attacks on TWINE, Revisited
Kosei SAKAMOTO Kazuhiko MINEMATSU Nao SHIBATA Maki SHIGERI Hiroyasu KUBO Yuki FUNABIKI Takanori ISOBE 
Publication:   
Publication Date: 2020/01/01
Vol. E103-A  No. 1  pp. 212-214
Type of Manuscript:  Special Section LETTER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
block cipherrelated-key securityactive sboxMILP
 Summary | Full Text:PDF