Yuhei WATANABE


Cryptanalysis of Reduced Kreyvium
Yuhei WATANABE Takanori ISOBE Masakatu MORII 
Publication:   
Publication Date: 2018/09/01
Vol. E101-A  No. 9  pp. 1548-1556
Type of Manuscript:  PAPER
Category: Cryptography and Information Security
Keyword: 
differential cryptanalysisconditional differentialhigher-order differentialdistinguisherkey recovery attackKreyvium
 Summary | Full Text:PDF(1MB)

How to Efficiently Exploit Different Types of Biases for Plaintext Recovery of RC4
Yuhei WATANABE Takanori ISOBE Toshihiro OHIGASHI Masakatu MORII 
Publication:   
Publication Date: 2017/03/01
Vol. E100-A  No. 3  pp. 803-810
Type of Manuscript:  PAPER
Category: Cryptography and Information Security
Keyword: 
RC4SSL/TLSplaintext recovery attackkeystream biases
 Summary | Full Text:PDF(937.9KB)

Full Plaintext Recovery Attacks on RC4 Using Multiple Biases
Toshihiro OHIGASHI Takanori ISOBE Yuhei WATANABE Masakatu MORII 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/01/01
Vol. E98-A  No. 1  pp. 81-91
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Symmetric Key Based Cryptography
Keyword: 
RC4stream cipherkeystream biasesplaintext recovery attackguess-and-determine attackbroadcast setting
 Summary | Full Text:PDF(945KB)

Comprehensive Analysis of Initial Keystream Biases of RC4
Takanori ISOBE Toshihiro OHIGASHI Yuhei WATANABE Masakatu MORII 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/01/01
Vol. E97-A  No. 1  pp. 139-151
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Symmetric Key Based Cryptography
Keyword: 
RC4stream cipherkeystream biasesplaintext recovery attackmultiple key distinguisherkey recovery attackbroadcast setting
 Summary | Full Text:PDF(1.3MB)