| Presentation | 2017-03-09 A consideration of Meet-in-the-middle Attack for Multiple Encryption Algorithm Yohei Maezawa, Munetoshi Iwakiri, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | It is known that the security strength can be lower than the total key length used for multiple encryption with meet-in-the-middle attacks proposed by Diffie and Hellman. The meet-in-the-middle attack is a chosen plaintext attack and it is possible to greatly reduce the complexity of multiple encryption. In this report, we consider a general multiple encryption algorithm as an example and a method to avoid the meet-in-the-middle attack without increasing necessary processing resource and key length. As a method to avoid the meet-in-the-midddle attack, we proposed the full subkeys permutation method which permutate the sequence of all subkeys and show the result of a consideration. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Meet-in-the-middle Attack / Block Cipher / Multiple Encryption / Key Scheduling |
| Paper # | IT2016-103,ISEC2016-93,WBS2016-79 |
| Date of Issue | 2017-03-02 (IT, ISEC, WBS) |
| Conference Information | |
| Committee | ISEC / WBS / IT |
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| 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 |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A consideration of Meet-in-the-middle Attack for Multiple Encryption Algorithm |
| Sub Title (in English) | |
| Keyword(1) | Meet-in-the-middle Attack |
| Keyword(2) | Block Cipher |
| Keyword(3) | Multiple Encryption |
| Keyword(4) | Key Scheduling |
| 1st Author's Name | Yohei Maezawa |
| 1st Author's Affiliation | National Defense Academy(NDA) |
| 2nd Author's Name | Munetoshi Iwakiri |
| 2nd Author's Affiliation | National Defense Academy(NDA) |
| Date | 2017-03-09 |
| Paper # | IT2016-103,ISEC2016-93,WBS2016-79 |
| Volume (vol) | vol.116 |
| Number (no) | IT-504,ISEC-505,WBS-506 |
| Page | pp.pp.25-31(IT), pp.25-31(ISEC), pp.25-31(WBS), |
| #Pages | 7 |
| Date of Issue | 2017-03-02 (IT, ISEC, WBS) |