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Paper Abstract and Keywords
Presentation 2018-05-18 14:45
A Data Embedding Method for Ruby Scripts transformed into Non-Alphanumeric Characters based on Structure of Numerical Expressions
Hirohisa Hioki (Kyoto Univ.) IT2018-11 EMM2018-11
Abstract (in Japanese) (See Japanese page) 
(in English) An esoteric method is known, which can convert any Ruby script into an equivalent one consisting only of non-alphanumeric characters. The method encodes each character in a script by a numerical expression consisting of addtions, multiplications, variables and parentheses. Because a particular numerical value can be represented by different expressions, we can embed a payload into them by adjusting their structures in a way according to the payload. Under this consideration, a data embedding method for Ruby scripts has been developed in this study. The method has been evaluated through experiments done on $1796$ Ruby scripts including standard libraries. It has been found that we can expect having the embedding ratio of about $3.5%$ by the method, and a script would likely to expand about $34$ times in size after embedding.
Keyword (in Japanese) (See Japanese page) 
(in English) Data Hiding / Ruby / Obfuscation / / / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 32, EMM2018-11, pp. 59-64, May 2018.
Paper # EMM2018-11 
Date of Issue 2018-05-10 (IT, EMM) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
Download PDF IT2018-11 EMM2018-11

Conference Information
Committee IT EMM  
Conference Date 2018-05-17 - 2018-05-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Ookayama Campus, Tokyo Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Information Security, Information Theory, Information Hiding, etc. 
Paper Information
Registration To EMM 
Conference Code 2018-05-IT-EMM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Data Embedding Method for Ruby Scripts transformed into Non-Alphanumeric Characters based on Structure of Numerical Expressions 
Sub Title (in English)  
Keyword(1) Data Hiding  
Keyword(2) Ruby  
Keyword(3) Obfuscation  
1st Author's Name Hirohisa Hioki  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
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Date Time 2018-05-18 14:45:00 
Presentation Time 25 
Registration for EMM 
Paper # IEICE-IT2018-11,IEICE-EMM2018-11 
Volume (vol) IEICE-118 
Number (no) no.31(IT), no.32(EMM) 
Page pp.59-64 
#Pages IEICE-6 
Date of Issue IEICE-IT-2018-05-10,IEICE-EMM-2018-05-10 

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