Akihiro SHIMIZU


Cryptanalysis on One-Time Password Authentication Schemes Using Counter Value
Takasuke TSUJI Akihiro SHIMIZU 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/06/01
Vol. E87-B  No. 6  pp. 1756-1759
Type of Manuscript:  LETTER
Category: Internet
Keyword: 
authenticationone-time passwordattacksmart cardcounter value
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A One-Time Password Authentication Method for Low Spec Machines and on Internet Protocols
Takasuke TSUJI Akihiro SHIMIZU 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/06/01
Vol. E87-B  No. 6  pp. 1594-1600
Type of Manuscript:  PAPER
Category: Internet
Keyword: 
cryptographyhash functionpassword authenticationone-time password
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One-Time Password Authentication Protocol against Theft Attacks
Takasuke TSUJI Akihiro SHIMIZU 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/03/01
Vol. E87-B  No. 3  pp. 523-529
Type of Manuscript:  Special Section PAPER (Special Section on Internet Technology IV)
Category: Security
Keyword: 
password authenticationone-time passwordstolen-verifier problemInternet protocol
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An Impersonation Attack on One-Time Password Authentication Protocol OSPA
Takasuke TSUJI Akihiro SHIMIZU 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/07/01
Vol. E86-B  No. 7  pp. 2182-2185
Type of Manuscript:  LETTER
Category: Fundamental Theories
Keyword: 
cryptographyhash functionpassword authenticationone-time password
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Simple and Secure Coin (SAS-Coin)--A Practical Micropayment System
Manjula SANDIRIGAMA Akihiro SHIMIZU Matu-Tarow NODA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/12/25
Vol. E83-A  No. 12  pp. 2679-2688
Type of Manuscript:  PAPER
Category: Information Security
Keyword: 
cryptographyhash functionssecuritySAS password authenticationmicropayment schemes
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Simple and Secure Password Authentication Protocol (SAS)
Manjula SANDIRIGAMA Akihiro SHIMIZU Matu-Tarow NODA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/06/25
Vol. E83-B  No. 6  pp. 1363-1365
Type of Manuscript:  LETTER
Category: Fundamental Theories
Keyword: 
cryptographyhash functionspassword authenticationsecurityone time password
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A Password Authentication Method for Contents Communications on the Internet
Akihiro SHIMIZU Tsutomu HORIOKA Hirohito INAGAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/08/25
Vol. E81-B  No. 8  pp. 1666-1673
Type of Manuscript:  PAPER
Category: Communication Networks and Services
Keyword: 
password authenticationonetime passwordsecuritycryptosystemFEALPERM
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A 6.93-µm2 Full CMOS SRAM Cell Technology for 1.8-V High-Performance Cache Memory
Masataka MINAMI Nagatoshi OHKI Hiroshi ISHIDA Toshiaki YAMANAKA Akihiro SHIMIZU Koichiro ISHIBASHI Akira SATOH Tokuo KURE Takashi NISHIDA Takahiro NAGANO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1997/04/25
Vol. E80-C  No. 4  pp. 590-596
Type of Manuscript:  PAPER
Category: Integrated Electronics
Keyword: 
SRAMfull CMOS celllocal interconnectTiN
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Trials for Multimedia Communiations
Akihiro SHIMIZU 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/08/25
Vol. E79-B  No. 8  pp. 1008-1014
Type of Manuscript:  INVITED PAPER (Special Issue on Multimedia on Demand)
Category: 
Keyword: 
multimediaATMinternetMODVODjoint utilization tests of multimedia communications
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A 6-ns 4-Mb CMOS SRAM with Offset-Voltage-Insensitive Current Sense Amplifiers
Koichiro ISHIBASHI Koichi TAKASUGI Kunihiro KOMIYAJI Hiroshi TOYOSHIMA Toshiaki YAMANAKA Akira FUKAMI Naotaka HASHIMOTO Nagatoshi OHKI Akihiro SHIMIZU Takashi HASHIMOTO Takahiro NAGANO Takashi NISHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1995/06/25
Vol. E78-C  No. 6  pp. 728-734
Type of Manuscript:  Special Section PAPER (Special Issue on the 1994 VLSI Circuits Symposium (Joint Issue with the IEEE Journal of Solid-State Circuits, Vol. 30, No. 4 April 1995))
Category: 
Keyword: 
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Flexible Information Sharing and Handling System--Towards Knowledge Propagation--
Yoshiaki SEKI Toshihiko YAMAKAMI Akihiro SHIMIZU 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/03/25
Vol. E77-B  No. 3  pp. 404-410
Type of Manuscript:  Special Section PAPER (Special Issue on Future Private Networks)
Category: 
Keyword: 
private networksinformation sharingknowledge propagationCSCWgroupware
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A Fast 32-bit Microprocessor Oriented Data Encipherment Algorithm
Akihiro SHIMIZU Toshihiko YAMAKAMI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/07/25
Vol. E73-E  No. 7  pp. 1045-1050
Type of Manuscript:  Special Section PAPER (Special Issue on Cryptography and Information Security)
Category: Common-Key Systems
Keyword: 
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An Abstract Enciphering Machine Model
Toshihiko YAMAKAMI Akihiro SHIMIZU 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/07/25
Vol. E73-E  No. 7  pp. 1051-1057
Type of Manuscript:  Special Section PAPER (Special Issue on Cryptography and Information Security)
Category: Common-Key Systems
Keyword: 
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