Paper Abstract and Keywords |
Presentation |
2018-03-07 14:50
Safety evaluation of stream cipher, Salsa20/ChaCha20 by redesign of diffusion Yusuke Matsuoka, Atsuko Miyaji (Osaka Univ.) ICSS2017-62 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
As of April 2016, in newly proposed TLS1.3, as encryption methods of symmetric key encryption scheme, AES in the block encryption and ChaCha20 in the stream encryption are adopted.However,ChaCha20 doesn't have sufficient safey evaluation like AES.ChaCha20 was proposed as a variant of Salsa 20, and the analysis of Salsa 20 is important as the first step in understanding the improvement to ChaCha20 and the design of stream cipher.
As a method of evaluating the safety of Salsa 20/ChaCha 20, there is a method using diffusion, but the method has not been established.In this research, we evaluate the safety by newly designing diffusion evaluation criteria and conditions for Salsa 20/ChaCha 20. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Stream Cipher / Salsa20 / ChaCha20 / Diffusion / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 117, no. 481, ICSS2017-62, pp. 67-72, March 2018. |
Paper # |
ICSS2017-62 |
Date of Issue |
2018-02-28 (ICSS) |
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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ICSS2017-62 |
Conference Information |
Committee |
ICSS IPSJ-SPT |
Conference Date |
2018-03-07 - 2018-03-08 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Okinawa Hokubu Koyou Nouryoku Kaihatsu Sougou Center |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Security, Trust, etc. |
Paper Information |
Registration To |
ICSS |
Conference Code |
2018-03-ICSS-SPT |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Safety evaluation of stream cipher, Salsa20/ChaCha20 by redesign of diffusion |
Sub Title (in English) |
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Stream Cipher |
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Salsa20 |
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ChaCha20 |
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Diffusion |
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1st Author's Name |
Yusuke Matsuoka |
1st Author's Affiliation |
Osaka University (Osaka Univ.) |
2nd Author's Name |
Atsuko Miyaji |
2nd Author's Affiliation |
Osaka University (Osaka Univ.) |
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Speaker |
Author-1 |
Date Time |
2018-03-07 14:50:00 |
Presentation Time |
25 minutes |
Registration for |
ICSS |
Paper # |
ICSS2017-62 |
Volume (vol) |
vol.117 |
Number (no) |
no.481 |
Page |
pp.67-72 |
#Pages |
6 |
Date of Issue |
2018-02-28 (ICSS) |
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