| Presentation | 2017-03-09 [Invited Talk] Recent Advances in Whitebox Cryptgraphy Takanori Isobe, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Whitebox cryptography is a technique to protect software implementations of cryptographic algorithmsin untrusted environments. An increasing number of applications are emerging that require substantial securityin purely software environments, e.g. set-top boxes, PCs, tablets, smartphones, HCE, digital rights management(DRM) systems, or client software running in the cloud. The major goal of whitebox cryptography is to protect thecon dentiality of secret keys when the adversary has full access to the execution environment with the aid of a de-compiler, debugger tools and dynamic binary analysis tools, e.g. IDA Pro, IL DASM, Valgrind and PIN. White-boximplementations of DES and AES were rst proposed by Chow et al. in 2002. In the wake of these seminal papers, several further variants of whitebox implementations for DES and AES were proposed. However, all publishedwhite-box solutions for DES and AES to date have been practically broken by BGE and DCA attacks. There is aclear gap between theory and practice, In this invited talk, we review history of whitebox cryptography from pointsof view of design and attacks, and then introduce our recent results: new constructions of whitebox-secure blockciphers and new powerful attacks on whitebox AES. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | block cipher / whitebox cryptgraphy / space hardness / decomposition attack |
| Paper # | IT2016-102,ISEC2016-92,WBS2016-78 |
| 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) | [Invited Talk] Recent Advances in Whitebox Cryptgraphy |
| Sub Title (in English) | Efficient and Robust Constructions and New Attacks |
| Keyword(1) | block cipher |
| Keyword(2) | whitebox cryptgraphy |
| Keyword(3) | space hardness |
| Keyword(4) | decomposition attack |
| 1st Author's Name | Takanori Isobe |
| 1st Author's Affiliation | Sony Global Manufacturing & Operations Corporation(Sony Global M&O Corp.) |
| Date | 2017-03-09 |
| Paper # | IT2016-102,ISEC2016-92,WBS2016-78 |
| Volume (vol) | vol.116 |
| Number (no) | IT-504,ISEC-505,WBS-506 |
| Page | pp.pp.23-23(IT), pp.23-23(ISEC), pp.23-23(WBS), |
| #Pages | 1 |
| Date of Issue | 2017-03-02 (IT, ISEC, WBS) |