Presentation 2017-03-09
A Note on Key Dependency of Stream Cipher Grain v1
Satoshi Kidokoro, Takanori Isobe, Toshihiro Ohigashi,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Meet-in-the-middle (MITM) attack is a powerful cryptanalytic method for block ciphers. Several attacks for block ciphers are applied to stream ciphers, but the MITM attack has not been applied to stream ciphers yet. In this paper, we propose a first MITM attack for stream cipher. In addition, the attack is applied to a stream cipher Grain v1 which is one of eSTREAM portfolio. Finally, we show the efficiency of our MITM attack.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) stream cipher / Grain v1 / cryptanalysis / Meet-in-the-middle attack
Paper # IT2016-99,ISEC2016-89,WBS2016-75
Date of Issue 2017-03-02 (IT, ISEC, WBS)

Conference Information
Committee ISEC / WBS / IT
Conference Date 2017/3/9(2days)
Place (in Japanese) (See Japanese page)
Place (in English) TOKAI University
Topics (in Japanese) (See Japanese page)
Topics (in English) joint meeting of IT, ISEC, and WBS
Chair Masahiro Mambo(Kanazawa Univ.) / Fumiaki Maehara(Waseda Univ.) / Masayoshi Ohashi(Fukuoka Univ.)
Vice Chair Kazuto Ogawa(NHK) / Atsushi Fujioka(Kanagawa Univ.) / Masanori Hamamura(Kochi Univ. of Tech.) / Fumie Ono(NICT) / Jun Muramatsu(NTT)
Secretary Kazuto Ogawa(Toshiba) / Atsushi Fujioka(Tohoku Univ.) / Masanori Hamamura(Tokyo City Univ.) / Fumie Ono(Mitsubishi Electric) / Jun Muramatsu(Wakayama Univ.)
Assistant Toshihiro Ohigashi(Tokai Univ.) / Yuuji Suga(IIJ) / Atsuo Inomata(Tokyo Denki Univ.) / Yusuke Kozawa(Tokyo Univ. of Science) / Akira Nakamura(Tokyo Univ. of Science) / Ryohei Nakamura(National Defense Academy) / Mitsugu Iwamoto(Univ. of Electro-Comm.)

Paper Information
Registration To Technical Committee on Information Security / Technical Committee on Wideband System / Technical Committee on Information Theory
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Note on Key Dependency of Stream Cipher Grain v1
Sub Title (in English)
Keyword(1) stream cipher
Keyword(2) Grain v1
Keyword(3) cryptanalysis
Keyword(4) Meet-in-the-middle attack
1st Author's Name Satoshi Kidokoro
1st Author's Affiliation Tokai University(Tokai Univ.)
2nd Author's Name Takanori Isobe
2nd Author's Affiliation Kobe University(Kobe Univ.)
3rd Author's Name Toshihiro Ohigashi
3rd Author's Affiliation Tokai University(Tokai Univ.)
Date 2017-03-09
Paper # IT2016-99,ISEC2016-89,WBS2016-75
Volume (vol) vol.116
Number (no) IT-504,ISEC-505,WBS-506
Page pp.pp.1-6(IT), pp.1-6(ISEC), pp.1-6(WBS),
#Pages 6
Date of Issue 2017-03-02 (IT, ISEC, WBS)