Committee 
Date Time 
Place 
Paper Title / Authors 
Abstract 
Paper # 
RCC, ISEC, IT, WBS 
20240314 16:10 
Osaka 
Osaka Univ. (Suita Campus) 
An Efficient Differential Attack Resistance Evaluation Method for Block Ciphers Haruka Sugai, Yasutaka Igarashi (TUS) IT2023130 ISEC2023129 WBS2023118 RCC2023112 
[more] 
IT2023130 ISEC2023129 WBS2023118 RCC2023112 pp.343349 
RCC, ISEC, IT, WBS 
20240314 16:35 
Osaka 
Osaka Univ. (Suita Campus) 
Integral Attack with BitBased Division Property on Block Cipher LBC Naoki Shibayama, Yasutaka Igarashi (Tokyo Univ. of Science) IT2023131 ISEC2023130 WBS2023119 RCC2023113 
LBC is a block cipher proposed by Kapalova et al. in 2023. The block size is 64bit, the secret key size is 80bit, and ... [more] 
IT2023131 ISEC2023130 WBS2023119 RCC2023113 pp.350357 
EMM, BioX, ISEC, SITE, ICSS, HWS, IPSJCSEC, IPSJSPT [detail] 
20230725 10:00 
Hokkaido 
Hokkaido Jichiro Kaikan 
Higher Order Differential Property of Block Cipher LBC3 Naoki Shibayama, Yasutaka Igarashi (Tokyo Univ. of Science) ISEC202347 SITE202341 BioX202350 HWS202347 ICSS202344 EMM202347 
LBC3 is a block cipher proposed by Nyssanbayeva et al. in 2022. The block size is 64bit, the secret key size is 80bit... [more] 
ISEC202347 SITE202341 BioX202350 HWS202347 ICSS202344 EMM202347 pp.214220 
WBS, IT, ISEC 
20210304 09:50 
Online 
Online 
Integral Attack with BitBased Division Property against lightweight block cipher MANTRA Hiroki Komatsu, Yasutaka Igarashi, Toshinobu Kaneko (TUS) IT2020119 ISEC202049 WBS202038 
MANTRA is a block cipher with a Feistel structure proposed by Gaurav Bansod, Narayan Pisharoty, and Abhijit Patil in 201... [more] 
IT2020119 ISEC202049 WBS202038 pp.4551 
EMM, IT 
20190524 13:30 
Hokkaido 
Asahikawa International Conference Hall 
Higher Order Differential Property of BIG Block Cipher Naoki Shibayama (Japan Air SelfDefense Force), Yasutaka Igarashi, Toshinobu Kaneko (Tokyo Univ. of Science) IT201912 EMM201912 
BIG is a block cipher with 128bit block length and 128bit key length proposed by Demeri et.al in 2019. The number of r... [more] 
IT201912 EMM201912 pp.6166 
EMM, IT 
20170522 16:00 
Yamagata 
Yamagata University(Yonezawa Campus) 
Higher Order Differential Property of Few Naoki Shibayama (Japan Air SelfDefense Force), Yasutaka Igarashi, Toshinobu Kaneko (Tokyo Univ. of Science) IT20177 EMM20177 
Few is a 64bit block cipher proposed by Manoj et.al in 2014. The designer evaluated its strength against differential c... [more] 
IT20177 EMM20177 pp.3742 
ICSS, IPSJSPT 
20160304 15:10 
Kyoto 
Academic Center for Computing and Media Studies, Kyoto University 
Verification of Division Property and HighOrder Differential Characteristic of Lightweight Blockcipher Piccolo Takuya Kubo, Yasutaka Igarashi, Toshinobu Kaneko (Tokyo Univ of Science) ICSS201572 
Integral property has been generalized and redened by the division property that was proposed by Todo of NTT in EUROCRY... [more] 
ICSS201572 pp.153158 
ICSS, IPSJSPT 
20160304 15:40 
Kyoto 
Academic Center for Computing and Media Studies, Kyoto University 
Higherorder differential attack on the roundreduced variants of the block cipher Yusuke Takahashi, Yasutaka Igarashi, Toshinobu Kaneko (TUS) ICSS201573 
Midori64 proposed by Banik et al. in 2015 is an SPNtype block cipher with 128bit secret key. The designers have evalua... [more] 
ICSS201573 pp.159164 
IPSJCSEC, ISEC, SITE, ICSS, EMM, IPSJSPT [detail] 
20150702 11:05 
Aichi 
NAGOYA TRADE & INDUSTRY CENTER 
Chosen Initial Vector Attack against Pseudorandom Number Generator QPDYN Kenichi Arai, Yasutaka Igarashi, Toshinobu Kaneko (Tokyo Univ of Science) ISEC201511 SITE20159 ICSS201521 EMM201519 
QPDYN is a new pseudorandom number generator (PRNG) proposed by Ohya and Accardi.
In 2014, Iriyama and Ohya introduce... [more] 
ISEC201511 SITE20159 ICSS201521 EMM201519 pp.1521 
ISEC 
20150515 13:55 
Tokyo 
KikaiShinkoKaikan Bldg. 
Truncated Differential Attack on Block Cipher PRINCE Satoshi Setoguchi (Kagoshima Univ), Yasutaka Igarashi, Toshinobu Kaneko (Tokyo Univ of Science), Seiji Fukushima, Tomohiro Hachino (Kagoshima Univ) ISEC20152 
PRINCE is an SPNtype 64bit block cipher with a 128bit key in 2012 proposed by Borghoff et al. [1]. The number of roun... [more] 
ISEC20152 pp.914 
OPE, OCS, OFT (Joint) [detail] 
20150219 10:55 
Kagoshima 

Variable Optical Attenuator Employing a DyeDoped (Polymer/Liquid Crystal) Composite Film Kazuhiro Ariki, Seiji Fukushima (Kagoshima Univ.), Hiroki Higuchi, Hirotsugu Kikuchi (Kyushu Univ.), Tomohiro Hachino, Yasutaka Igarashi (Kagoshima Univ.) OCS2014104 OFT201460 OPE2014205 
Optical characteristics of a dyedoped (polymer/liquid crystal) composite film do not depends much on wavelength and pol... [more] 
OCS2014104 OFT201460 OPE2014205 pp.510(OCS), pp.1520(OFT), pp.1520(OPE) 
MW 
20131122 15:45 
Kagoshima 
Kagoshima Prefectural Culture Center 
Cube satellite earth station employing RoF link Seiji Fukushima, Takayuki Shimaki, Taishi Funasako, Kota Yamashita, Tomohiro Hachino, Yasutaka Igarashi (Kagoshima Univ.) MW2013150 
[more] 
MW2013150 pp.109112 
EMM, ISEC, SITE, ICSS, IPSJCSEC, IPSJSPT [detail] 
20130718 15:40 
Hokkaido 

Higher Order Differential Attack on HyRAL using Control Transform and Observation Transform Naoki Shibayama (JASDF), Yasutaka Igarashi (Kagoshima Univ.), Toshinobu Kaneko (Tokyo Univ. of Science) ISEC201320 SITE201315 ICSS201325 EMM201322 
HyRAL is a 128bit block cipher proposed by Hirata in 2010. It has been reported that 14round HyRAL with 256bit secret... [more] 
ISEC201320 SITE201315 ICSS201325 EMM201322 pp.6774 
ISEC, IPSJCSEC, SITE, ICSS, EMM, IPSJSPT [detail] 
20110713 10:55 
Shizuoka 
Shizuoka University 
Security Evaluation of HyRAL against Saturation Cryptanalysis(II) Naoki Shibayama, Yasutaka Igarashi, Toshinobu Kaneko, Seiichiro Hangai (Tokyo Univ. of Science) ISEC201119 SITE201116 ICSS201124 EMM201118 
In this paper, we focuse on the saturation attack on block cipher HyRAL that was proposed by Hirata in 2010.
It has bee... [more] 
ISEC201119 SITE201116 ICSS201124 EMM201118 pp.103109 
ISEC, IT, WBS 
20110304 09:50 
Osaka 
Osaka University 
Higher Order Differential Attack on HyRAL Naoki Shibayama, Yasutaka Igarashi, Toshinobu Kaneko, Seiichiro Hangai (Tokyo Univ. of Science) IT2010119 ISEC2010123 WBS201098 
In this paper, we focuse on the higher order differential attack on block cipher HyRAL that was proposed by Hirata in 20... [more] 
IT2010119 ISEC2010123 WBS201098 pp.341347 
ISEC, IPSJCSEC, SITE, ICSS [detail] 
20100701 13:25 
Aomori 
Hirosaki University 
On the truncated path search for the maximum differential characteristic probability on a generalized Feisteltype block cipher Yasutaka Igarashi, Toshinobu Kaneko (Tokyo Univ. of Science) ISEC201013 SITE20109 ICSS201019 
We study a Viterbi search for the maximum differential characteristic
probability ($DCP_{max}$) of a block cipher wit... [more] 
ISEC201013 SITE20109 ICSS201019 pp.2125 
IT, ISEC, WBS 
20100305 15:20 
Nagano 
NaganoEngineering Campus, Shinshu University 
On key recovery for Enocoro with weak key in relatedkey attack scenario Yasutaka Igarashi, Kazuto Okamoto, Toshinobu Kaneko (Tokyo Univ. of Science) IT2009113 ISEC2009121 WBS200992 
Enocoro is a hardwareoriented pseudorandom number generator (PRNG), whose structure is similar to the PRNG named PANAMA... [more] 
IT2009113 ISEC2009121 WBS200992 pp.275280 
ISEC 
20091216 14:15 
Tokyo 
KikaiShinkoKaikan Bldg. 
On Viterbi search for the maximum differential characteristic probability of a cipher with certain Feistel structure Yasutaka Igarashi, Toshinobu Kaneko (Tokyo Univ. of Science) ISEC200974 
We study a Viterbi search for the maximum differential characteristic probability ($DCP_{max}$) of a symmetrickey ciphe... [more] 
ISEC200974 pp.2327 
ISEC, IPSJCSEC, SITE, ICSS [detail] 
20090703 10:45 
Akita 
Akita University 
On the strength evaluation of Lesamnta against differential cryptanalysis Yasutaka Igarashi, Toshinobu Kaneko (Tokyo Univ. of Science) ISEC200928 SITE200920 ICSS200942 
We focus on the cryptographic hash algorithm Lesamnta256, which is one of the
candidates for the new hash algorithm S... [more] 
ISEC200928 SITE200920 ICSS200942 pp.147152 
ISEC, SITE, IPSJCSEC 
20080724 13:25 
Fukuoka 
Fukuoka Institute of System LSI Design Industry 
On the security of Piece In Hand Matrix Multivariate Public Key Cryptosystems
 MPKC systems proposed in SCIS'07  Toshinobu Kaneko, Yasutaka Igarashi, Daisuke Ito, Kiyoshi Hayakawa (Tokyo Univ. of Sci.) ISEC200817 SITE200811 
MOCHIGOMA (Piece in Hand) system is an encryption algorithm proposed by
Tujii et al. in 2003, for enhancing the securi... [more] 
ISEC200817 SITE200811 pp.914 