Yuji SUGIYAMA


An Efficient On-Line Electronic Cash with Unlinkable Exact Payments
Toru NAKANISHI  Yuji SUGIYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/10/01
Vol. E88-A  No. 10  pp. 2769-2777
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Cryptography and Information Security
Keyword: 
on-line e-cashunlinkabilityexact paymentszero-knowledge proofs of knowledgepaillier cryptosystem
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A Group Signature Scheme with Efficient Membership Revocation for Middle-Scale Groups
Toru NAKANISHI  Yuji SUGIYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/05/01
Vol. E88-A  No. 5  pp. 1224-1233
Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
group signaturemembership revocationstrong RSA assumption
  Summary |  Full Text:PDF (200.8KB)

Sealed-Bid Auctions with Efficient Bids Using Secure Bit-Slicing Conversion
Toru NAKANISHI  Yuji SUGIYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/10/01
Vol. E87-A  No. 10  pp. 2533-2542
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Cryptography and Information Security
Keyword: 
sealed-bid auctionmultiparty computation (MPC)mix-and-matchadditive homomorphic cryptosystems
  Summary |  Full Text:PDF (210.3KB)

An Efficient Anonymous Survey for Attribute Statistics Using a Group Signature Scheme with Attribute Tracing
Toru NAKANISHI  Yuji SUGIYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/10/01
Vol. E86-A  No. 10  pp. 2560-2568
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Information Security
Keyword: 
anonymous survey for attribute statisticsgroup signature schemeattribute tracingsignature of knowledgestrong RSA assumption
  Summary |  Full Text:PDF (268.3KB)

An Efficiency Improvement on an Unlinkable Divisible Electronic Cash System
Toru NAKANISHI  Yuji SUGIYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/10/01
Vol. E85-A  No. 10  pp. 2326-2335
Type of Manuscript: PAPER
Category: Information Security
Keyword: 
electronic cash systemdivisibilityunlinkabilitygroup signature schemesignatures based on zero-knowledge proofs of knowledge
  Summary |  Full Text:PDF (309.2KB)

The Number of Elements in Minimum Test Set for Locally Exhaustive Testing of Combinational Circuits with Five Outputs
Tokumi YOKOHIRA  Toshimi SHIMIZU  Hiroyuki MICHINISHI  Yuji SUGIYAMA  Takuji OKAMOTO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1995/07/20
Vol. E78-D  No. 7  pp. 874-881
Type of Manuscript: Special Section PAPER (Special Issue on Verification, Test and Diagnosis of VLSI Systems)
Category: 
Keyword: 
built-in self-testexhaustive testingtest pattern generationminimum test setdependence matrix
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An Algebraic Specification of a Daisy Chain Arbiter
Yu Rong HOU  Atsushi OHNISHI  Yuji SUGIYAMA  Takuji OKAMOTO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1992/11/20
Vol. E75-D  No. 6  pp. 778-784
Type of Manuscript: Special Section PAPER (Special Issue on Pacific Rim International Symposium on Fault Tolerant Systems)
Category: 
Keyword: 
specificationalgebraic methodasynchronous circuitsarbiter
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Test Set for a Multibit Shifter Constructed with Multiplexers
Tokumi YOKOHIRA  Hiroyuki MICHINISHI  Takuji OKAMOTO  Yuji SUGIYAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/08/20
Vol. E73-E  No. 8  pp. 1301-1309
Type of Manuscript: Special Section PAPER (Special Issue on Fault-Tolerant Systems)
Category: 
Keyword: 
  Summary |  Full Text:PDF (635.9KB)

Functional Programming for the Telegram Analysis Problem
Yuji SUGIYAMA  Koji TORII  Tadao KASAMI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/05/20
Vol. E71-E  No. 5  pp. 523-529
Type of Manuscript: PAPER
Category: Software Theory
Keyword: 
  Summary |  Full Text:PDF (603KB)