Jun YAJIMA


Compact Architecture for ASIC and FPGA Implementation of the KASUMI Block Cipher
Dai YAMAMOTO Kouichi ITOH Jun YAJIMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/12/01
Vol. E94-A  No. 12  pp. 2628-2638
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: High-Level Synthesis and System-Level Design
Keyword: 
block cipherKASUMIhardwareASICFPGAcompact implementation
 Summary | Full Text:PDF

Compact Architecture for ASIC Implementation of the MISTY1 Block Cipher
Dai YAMAMOTO Jun YAJIMA Kouichi ITOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/01/01
Vol. E93-A  No. 1  pp. 3-12
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Symmetric Cryptography
Keyword: 
block cipherMISTY1hardwareASICcompact implementation
 Summary | Full Text:PDF

Collision-Based Power Attack for RSA with Small Public Exponent
Kouichi ITOH Dai YAMAMOTO Jun YAJIMA Wakaha OGATA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2009/05/01
Vol. E92-D  No. 5  pp. 897-908
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication System Security)
Category: Implementation Issues
Keyword: 
power attackcollision attackSPADPARSAwindow methodcountermeasure
 Summary | Full Text:PDF

A Strict Evaluation on the Number of Conditions for SHA-1 Collision Search
Jun YAJIMA Terutoshi IWASAKI Yusuke NAITO Yu SASAKI Takeshi SHIMOYAMA Thomas PEYRIN Noboru KUNIHIRO Kazuo OHTA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/01/01
Vol. E92-A  No. 1  pp. 87-95
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Hash Function
Keyword: 
hash functioncollision searchSHA-1disturbance vector
 Summary | Full Text:PDF