Yosuke TODO


On the Design Rationale of SIMON Block Cipher: Integral Attacks and Impossible Differential Attacks against SIMON Variants
Kota KONDO Yu SASAKI Yosuke TODO Tetsu IWATA 
Publication:   
Publication Date: 2018/01/01
Vol. E101-A  No. 1  pp. 88-98
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
lightweight block cipherintegral attackimpossible differential attackdesign rationalerotation constant
 Summary | Full Text:PDF(1.6MB)

Efficient Implementations for Practical Linear Cryptanalysis and Its Application to FEAL-8X
Sho SAKIKOYAMA Yosuke TODO Kazumaro AOKI Masakatu MORII 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/01/01
Vol. E99-A  No. 1  pp. 31-38
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
linear cryptanalysisFFTFWHTmultiple linear cryptanalysisFEAL-8X
 Summary | Full Text:PDF(1.1MB)

Impossible Differential Attack against 14-Round Piccolo-80 without Relying on Full Code Book
Yosuke TODO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/01/01
Vol. E99-A  No. 1  pp. 154-157
Type of Manuscript:  Special Section LETTER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
impossible differential attackPiccolo-80
 Summary | Full Text:PDF(265.7KB)

Fast Fourier Transform Key Recovery for Integral Attacks
Yosuke TODO Kazumaro AOKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/09/01
Vol. E98-A  No. 9  pp. 1944-1952
Type of Manuscript:  PAPER
Category: Cryptography and Information Security
Keyword: 
block ciphersintegral attackEven-Mansourkey-alternating cipherFeistel structureFFTFWHT
 Summary | Full Text:PDF(867.4KB)

Upper Bounds for the Security of Several Feistel Networks
Yosuke TODO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/01/01
Vol. E98-A  No. 1  pp. 39-48
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Symmetric Key Based Cryptography
Keyword: 
block ciphersFeistel networksround functionskey recovery attacks
 Summary | Full Text:PDF(701.7KB)

Falsification Attacks against WPA-TKIP in a Realistic Environment
Yosuke TODO Yuki OZAWA Toshihiro OHIGASHI Masakatu MORII 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2012/02/01
Vol. E95-D  No. 2  pp. 588-595
Type of Manuscript:  PAPER
Category: Information Network
Keyword: 
wireless LAN networkWPA-TKIPfalsification attackQoSvulnerability
 Summary | Full Text:PDF(642.8KB)

Cryptanalysis for RC4 and Breaking WEP/WPA-TKIP
Masakatu MORII Yosuke TODO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2011/11/01
Vol. E94-D  No. 11  pp. 2087-2094
Type of Manuscript:  INVITED PAPER (Special Section on Information and Communication System Security)
Category: 
Keyword: 
wireless LAN networkRC4WEPWPA-TKIPcryptoanalysis
 Summary | Full Text:PDF(505.6KB)