Naofumi HOMMA


Evaluation of Information Leakage from Cryptographic Hardware via Common-Mode Current
Yu-ichi HAYASHI  Naofumi HOMMA  Takaaki MIZUKI  Takeshi SUGAWARA  Yoshiki KAYANO  Takafumi AOKI  Shigeki MINEGISHI  Akashi SATOH  Hideaki SONE  Hiroshi INOUE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/06/01
Vol. E95-C  No. 6  pp. 1089-1097
Type of Manuscript: PAPER
Category: Electronic Components
Keyword: 
information securityelectromagnetic information leakagecryptographic modulesside-channel attackscommon-mode currents
  Summary |  Full Text:PDF (2.3MB)

A Configurable On-Chip Glitchy-Clock Generator for Fault Injection Experiments
Sho ENDO  Takeshi SUGAWARA  Naofumi HOMMA  Takafumi AOKI  Akashi SATOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/01/01
Vol. E95-A  No. 1  pp. 263-266
Type of Manuscript: Special Section LETTER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
faulty injection attacksclock glitchRSAsafe-error attack
  Summary |  Full Text:PDF (1.6MB)

High-Performance Architecture for Concurrent Error Detection for AES Processors
Takeshi SUGAWARA  Naofumi HOMMA  Takafumi AOKI  Akashi SATOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/10/01
Vol. E94-A  No. 10  pp. 1971-1980
Type of Manuscript: PAPER
Category: Cryptography and Information Security
Keyword: 
dependable architecturesfault injection attackstamper resistanceerror detection
  Summary |  Full Text:PDF (2.9MB)

Multiple-Valued Constant-Power Adder and Its Application to Cryptographic Processor
Naofumi HOMMA  Yuichi BABA  Atsushi MIYAMOTO  Takafumi AOKI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/08/01
Vol. E93-D  No. 8  pp. 2117-2125
Type of Manuscript: Special Section PAPER (Special Section on Multiple-Valued Logic and VLSI Computing)
Category: Application of Multiple-Valued VLSI
Keyword: 
cryptographic processorsside-channel attacksarithmetic circuitsmultiple-valued logicRSA cryptosystem
  Summary |  Full Text:PDF (976KB)

Arithmetic Circuit Verification Based on Symbolic Computer Algebra
Yuki WATANABE  Naofumi HOMMA  Takafumi AOKI  Tatsuo HIGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/10/01
Vol. E91-A  No. 10  pp. 3038-3046
Type of Manuscript: PAPER
Category: VLSI Design Technology and CAD
Keyword: 
datapatharithmetic circuitsformal verificationcomputer algebra
  Summary |  Full Text:PDF (753.7KB)

A High-Resolution Phase-Based Waveform Matching and Its Application to Side-Channel Attacks
Naofumi HOMMA  Sei NAGASHIMA  Takeshi SUGAWARA  Takafumi AOKI  Akashi SATOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/01/01
Vol. E91-A  No. 1  pp. 193-202
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Side Channel Attacks
Keyword: 
side-channel attacksDPADEMAcryptographic modulewaveform matchingphase-only correlation
  Summary |  Full Text:PDF (1.2MB)

Formal Design of Arithmetic Circuits Based on Arithmetic Description Language
Naofumi HOMMA  Yuki WATANABE  Takafumi AOKI  Tatsuo HIGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/12/01
Vol. E89-A  No. 12  pp. 3500-3509
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Circuit Synthesis
Keyword: 
datapathsformal designarithmetic circuitshardware algorithmshardware description languagemodule generator
  Summary |  Full Text:PDF (875.2KB)

Systematic Interpretation of Redundant Arithmetic Adders in Binary and Multiple-Valued Logic
Naofumi HOMMA  Takafumi AOKI  Tatsuo HIGUCHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/11/01
Vol. E89-C  No. 11  pp. 1645-1654
Type of Manuscript: Special Section PAPER (Special Section on Novel Device Architectures and System Integration Technologies)
Category: 
Keyword: 
datapathsarithmetic circuitsaddition algorithmsnumber systemsmultiple-valued logic
  Summary |  Full Text:PDF (856.7KB)

Counter Tree Diagrams: A Unified Framework for Analyzing Fast Addition Algorithms
Jun SAKIYAMA  Naofumi HOMMA  Takafumi AOKI  Tatsuo HIGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/12/01
Vol. E86-A  No. 12  pp. 3009-3019
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: IP Design
Keyword: 
computer arithmetic algorithmsparallel countersmultipliersdatapathVLSIcircuit synthesis
  Summary |  Full Text:PDF (903.9KB)

Parallel Evolutionary Design of Constant-Coefficient Multipliers
Dingjun CHEN  Takafumi AOKI  Naofumi HOMMA  Tatsuo HIGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/02/01
Vol. E85-A  No. 2  pp. 508-512
Type of Manuscript: LETTER
Category: VLSI Design Technology and CAD
Keyword: 
evolutionary graph generationmultiplierPC clusterscanonical signed-digit (CSD) number representation
  Summary |  Full Text:PDF (720KB)

Evolutionary Synthesis of Fast Constant-Coefficient Multipliers
Naofumi HOMMA  Takafumi AOKI  Tatsuo HIGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/09/20
Vol. E83-A  No. 9  pp. 1767-1777
Type of Manuscript: PAPER
Category: Nonlinear Problems
Keyword: 
circuit designcomputer arithmeticarithmetic circuitsevolvable hardwareevolutionary computation
  Summary |  Full Text:PDF (984.9KB)

Evolutionary Design of Arithmetic Circuits
Takafumi AOKI  Naofumi HOMMA  Tatsuo HIGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/05/20
Vol. E82-A  No. 5  pp. 798-806
Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
circuit designcomputer arithmeticarithmetic circuitsevolvable hardwareevolutionary computation
  Summary |  Full Text:PDF (762.1KB)