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Paper Abstract and Keywords
Presentation 2017-03-09 11:25
[Invited Talk] Recent Advances in Whitebox Cryptgraphy -- Efficient and Robust Constructions and New Attacks --
Takanori Isobe (Sony Global M&O Corp.) IT2016-102 ISEC2016-92 WBS2016-78
Abstract (in Japanese) (See Japanese page) 
(in English) Whitebox cryptography is a technique to protect software implementations of cryptographic algorithms
in untrusted environments. An increasing number of applications are emerging that require substantial security
in 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 the
con 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-box
implementations 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 published
white-box solutions for DES and AES to date have been practically broken by BGE and DCA attacks. There is a
clear gap between theory and practice, In this invited talk, we review history of whitebox cryptography from points
of view of design and attacks, and then introduce our recent results: new constructions of whitebox-secure block
ciphers and new powerful attacks on whitebox AES.
Keyword (in Japanese) (See Japanese page) 
(in English) block cipher / whitebox cryptgraphy / space hardness / decomposition attack / / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 505, ISEC2016-92, pp. 23-23, March 2017.
Paper # ISEC2016-92 
Date of Issue 2017-03-02 (IT, ISEC, WBS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF IT2016-102 ISEC2016-92 WBS2016-78

Conference Information
Committee ISEC WBS IT  
Conference Date 2017-03-09 - 2017-03-10 
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 
Paper Information
Registration To ISEC 
Conference Code 2017-03-ISEC-WBS-IT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) 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  
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Keyword(6)  
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1st Author's Name Takanori Isobe  
1st Author's Affiliation Sony Global Manufacturing & Operations Corporation (Sony Global M&O Corp.)
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Speaker Author-1 
Date Time 2017-03-09 11:25:00 
Presentation Time 50 minutes 
Registration for ISEC 
Paper # IT2016-102, ISEC2016-92, WBS2016-78 
Volume (vol) vol.116 
Number (no) no.504(IT), no.505(ISEC), no.506(WBS) 
Page p.23 
#Pages 1 
Date of Issue 2017-03-02 (IT, ISEC, WBS) 

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