Analysis of the SMS4 Block Cipher View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

2007

AUTHORS

Fen Liu , Wen Ji , Lei Hu , Jintai Ding , Shuwang Lv , Andrei Pyshkin , Ralf-Philipp Weinmann

ABSTRACT

SMS4 is a 128-bit block cipher used in the WAPI standard for providing data confidentiality in wireless networks. In this paper we investigate and explain the origin of the S-Box employed by the cipher, show that an embedded cipher similar to BES can be obtained for SMS4 and demonstrate the fragility of the cipher design by giving variants that exhibit 264 weak keys. We also show attacks on reduced round versions of the cipher. The best practical attack we found is an integral attack that works on 10 rounds out of 32 rounds with a complexity of 218 operations; it can be extended to 13 rounds using round key guesses, resulting in a complexity of 2114 operations and a data complexity of 216 chosen pairs. More... »

PAGES

158-170

Book

TITLE

Information Security and Privacy

ISBN

978-3-540-73457-4

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-3-540-73458-1_13

DOI

http://dx.doi.org/10.1007/978-3-540-73458-1_13

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1052373877


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