Tatsuo Ohtsuki

Publication List Details

Period

2002 - 2008

Number

28

Co-Authors

An Area-Efficient GF(2 m) MSD Multiplier based on an MSB Multiplier for Elliptic Curve LSI (2008)

Ryuta Nara, Kazunori Shimizu, Shunitsu Kohara, Nozomu Togawa, Masao Yanagisawa, Tatsuo Ohtsuki

Abstract: In this paper, we propose an MSD (most significant digit) multiplier based on an MSB (most significant bit) multiplier over GF(2 m). The proposed multiplier is based on connecting D (digit...

A Secure Test Technique for Pipelined Advanced Encryption Standard (2008)

SHI, Youhua, TOGAWA, Nozomu, YANAGISAWA, Masao, OHTSUKI, Tatsuo

In this paper, we presented a Design-for-Secure-Test (DFST) technique for pipelined AES to guarantee both the security and the test quality during testing. Unlike previous works, the proposed method...

A Unified Test Compression Technique for Scan Stimulus and Unknown Masking Data with No Test Loss (2008)

SHI, Youhua, TOGAWA, Nozomu, YANAGISAWA, Masao, OHTSUKI, Tatsuo

This paper presents a unified test compression technique for scan stimulus and unknown masking data with seamless integration of test generation, test compression and all unknown response masking for...

A Fast Elliptic Curve Cryptosystem LSI Embedding Word-Based Montgomery Multiplier (2006)

Jumpei Uchida †a, Nozomu Togawa, Masao Yanagisawa, Tatsuo Ohtsuki

SUMMARY Elliptic curve cryptosystems are expected to be a next standard of public-key cryptosystems. A security level of elliptic curve cryptosystems depends on a difficulty of a discrete logarithm...

FCSCAN: An efficient multiscan-based test compression technique for test cost reduction (2006)

Youhua Shi, Nozomu Togawa, Shinji Kimura, Masao Yanagisawa, Tatsuo Ohtsuki

Abstract — This paper proposes a new multiscan-based test input data compression technique by employing a Fan-out Compression Scan Architecture (FCSCAN) for test cost reduction. The basic idea of...

A Fast Elliptic Curve Cryptosystem LSI Embedding Word-Based Montgomery Multiplier (2006)

UCHIDA, Jumpei, TOGAWA, Nozomu, YANAGISAWA, Masao, OHTSUKI, Tatsuo

Elliptic curve cryptosystems are expected to be a next standard of public-key cryptosystems. A security level of elliptic curve cryptosystems depends on a difficulty of a discrete logarithm problem...

Selective Low-Care Coding: A Means for Test Data Compression in Circuits with Multiple Scan Chains (2006)

SHI, Youhua, TOGAWA, Nozomu, KIMURA, Shinji, YANAGISAWA, Masao, OHTSUKI, Tatsuo

This paper presents a test input data compression technique, Selective Low-Care Coding (SLC), which can be used to significantly reduce input test data volume as well as the external test channel...

Sub-operation Parallelism Optimization in SIMD Processor Core Synthesis (2005)

KAWAZU, Hideki, UCHIDA, Jumpei, MIYAOKA, Yuichiro, TOGAWA, Nozomu, YANAGISAWA, Masao, OHTSUKI, Tatsuo

A b-bit SIMD functional unit has n k-bit sub-functional units in itself, where b = k × n. It can execute n-parallel k-bit operations. However, all the b-bit functional units in a processor...

A SIMD Instruction Set and Functional Unit Synthesis Algorithm with SIMD Operation Decomposition (2005)

TOGAWA, Nozomu, TACHIKAKE, Koichi, MIYAOKA, Yuichiro, YANAGISAWA, Masao, OHTSUKI, Tatsuo

This paper focuses on SIMD processor synthesis and proposes a SIMD instruction set/functional unit synthesis algorithm. Given an initial assembly code and a timing constraint, the proposed algorithm...

Under the Supervision of (2002)

Jinku Choi, Prof Dr, Tatsuo Ohtsuki, Copyright Jinku Choi

TABLE OF CONTENTS Table of Contents........................................................................................................iv List of...