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Paper Abstract and Keywords
Presentation 2011-11-15 16:05
On the Insecurity of Randomized Arithmetic Codes Based on Markov Model
Liang Zhao, Takashi Nishide (Kyushu Univ.), Avishek Adhikari (Univ. of Calcutta), Kyung-Hyune Rhee (Pukyong National Univ.), Kouichi Sakurai (Kyushu Univ.) ISEC2011-61 LOIS2011-55
Abstract (in Japanese) (See Japanese page) 
(in English) An improvement of arithmetic coding (AC) has been proposed in the paper (Communications in Nonlinear Science and Numerical Simulation, 16(6), pp: 2554-2562, June, 2011). It can be seen as a typical improved arithmetic coding based on Markov model (ACMM). In the current work, the formal definition and drawbacks of this improved arithmetic coding are investigated at first. Then, the ciphertext-only attack (COA) under the condition that the different pseudorandom bit sequences are used to encrypt different plaintext messages is presented. We prove that ACMM is insecure even if the different pseudorandom bit sequences are used to encrypt each plaintext message. Moreover, when the ACMM is combined with the randomized arithmetic code (RAC) (IEEE Trans. Multimedia, 8(5), pp: 905-917, 2006), we explore the security of this combined encryption scheme under COA. The analysis demonstrates that the ACMM+RAC is also insecure.
Keyword (in Japanese) (See Japanese page) 
(in English) Pseudorandom bit / Indistinguishableness / Ciphertext-only attack / Arithmetic coding / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 285, ISEC2011-61, pp. 181-188, Nov. 2011.
Paper # ISEC2011-61 
Date of Issue 2011-11-07 (ISEC, LOIS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee ISEC LOIS  
Conference Date 2011-11-14 - 2011-11-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Osaka Electro-Communication University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2011-11-ISEC-LOIS 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) On the Insecurity of Randomized Arithmetic Codes Based on Markov Model 
Sub Title (in English)  
Keyword(1) Pseudorandom bit  
Keyword(2) Indistinguishableness  
Keyword(3) Ciphertext-only attack  
Keyword(4) Arithmetic coding  
1st Author's Name Liang Zhao  
1st Author's Affiliation Kyushu University (Kyushu Univ.)
2nd Author's Name Takashi Nishide  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
3rd Author's Name Avishek Adhikari  
3rd Author's Affiliation University of Calcutta (Univ. of Calcutta)
4th Author's Name Kyung-Hyune Rhee  
4th Author's Affiliation Pukyong National University (Pukyong National Univ.)
5th Author's Name Kouichi Sakurai  
5th Author's Affiliation Kyushu University (Kyushu Univ.)
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Date Time 2011-11-15 16:05:00 
Presentation Time 25 
Registration for ISEC 
Paper # IEICE-ISEC2011-61,IEICE-LOIS2011-55 
Volume (vol) IEICE-111 
Number (no) no.285(ISEC), no.286(LOIS) 
Page pp.181-188 
#Pages IEICE-8 
Date of Issue IEICE-ISEC-2011-11-07,IEICE-LOIS-2011-11-07 

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