Paper Abstract and Keywords |
Presentation |
2009-11-13 13:00
State Recovery of RC4 PRGA by Using Nonzero Bit Differences Mitsuki Ajiro, Atsuko Miyaji (JAIST) ISEC2009-65 LOIS2009-54 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In this paper, we focus on a keystream of RC4 PRGA. The analysis of the
transitions of two permutations, $S$ and $S'$, with some differences in the
initial round were argued in \cite{SMI08}\cite{SM08}\cite{MS09}. Recently the existence of colliding keys was shown theoretically in \cite{Matusi09} even if a secret key length is short.
In addition, the existence of pairs of the secret key that generate two
permutations, $S$ and $S'$, with two bytes differences in the initial round
was shown theoretically.
In this paper, we investigate how the structure mixes the permutation S by
observing correlation between two keystream $Z$ and $Z'$ which are generated by two permutations, S and S', with some
differences in the initial round. We show that we can suppose the part of the
initial permutation with the probability that is higher than the random. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
RC4 / Stream Cipher / Symmetric Cipher / Internal State Analysis / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 109, no. 271, ISEC2009-65, pp. 95-100, Nov. 2009. |
Paper # |
ISEC2009-65 |
Date of Issue |
2009-11-05 (ISEC, LOIS) |
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) |
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ISEC2009-65 LOIS2009-54 |
Conference Information |
Committee |
ISEC LOIS |
Conference Date |
2009-11-12 - 2009-11-13 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Gifu Univ. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
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Paper Information |
Registration To |
ISEC |
Conference Code |
2009-11-ISEC-LOIS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
State Recovery of RC4 PRGA by Using Nonzero Bit Differences |
Sub Title (in English) |
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RC4 |
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Stream Cipher |
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Symmetric Cipher |
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Internal State Analysis |
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1st Author's Name |
Mitsuki Ajiro |
1st Author's Affiliation |
Japan Advanced Institute of science and technology (JAIST) |
2nd Author's Name |
Atsuko Miyaji |
2nd Author's Affiliation |
Japan Advanced Institute of science and technology (JAIST) |
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Speaker |
Author-1 |
Date Time |
2009-11-13 13:00:00 |
Presentation Time |
25 minutes |
Registration for |
ISEC |
Paper # |
ISEC2009-65, LOIS2009-54 |
Volume (vol) |
vol.109 |
Number (no) |
no.271(ISEC), no.272(LOIS) |
Page |
pp.95-100 |
#Pages |
6 |
Date of Issue |
2009-11-05 (ISEC, LOIS) |
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