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IEICE Trans

Takeshi KOSHIBA


FOREWORD
Takeshi KOSHIBA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2017/03/01
Vol. E100-D  No. 3  pp. 413-413
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF

Theoretical Analysis of χ2 Attack on RC6
Masahiko TAKENAKA Takeshi SHIMOYAMA Takeshi KOSHIBA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/01/01
Vol. E87-A  No. 1  pp. 28-36
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Symmetric Cipher
Keyword: 
RC6χ2 attacktransition matrix
 Summary | Full Text:PDF

The Decision Diffie-Hellman Assumption and the Quadratic Residuosity Assumption
Taiichi SAITO Takeshi KOSHIBA Akihiro YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/01/01
Vol. E84-A  No. 1  pp. 165-171
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
decision Diffie-Hellman assumptionquadratic residuosity assumptionprobabilistic encryptionbit commitmentall-or-nothing disclosure of secrets
 Summary | Full Text:PDF

A Theory of Randomness for Public Key Cryptosystems: The ElGamal Cryptosystem Case
Takeshi KOSHIBA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/04/25
Vol. E83-A  No. 4  pp. 614-619
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
pseudorandom number generatorlinear congruential generatorthe ElGamal cryptosystem
 Summary | Full Text:PDF