Reflection Attacks on Product Ciphers

Orhun Kara

Paper 2007/043

Reflection Attacks on Product Ciphers

Orhun Kara

Abstract

In this paper we describe a novel attack method on product ciphers, the {\em reflection attack}. The attack method exploits certain similarities among round functions which have not been utilized in previous self similarity attacks. We give practical examples illustrating the power of the reflection attack on several ciphers such as GOST, DEAL and some variants of DES and Magenta. Many interesting and exceptional properties of the attack are also presented in these examples. In addition, we discuss new design criteria that make product ciphers resistant to self similarity attacks and introduce a definition of similarity degree.

Note: thanks

Metadata

Available format(s): PDF PS
Publication info: Published elsewhere. Unknown where it was published
Keywords: Block Cipher Round Function Round Key Key Schedule Cryptanalysis Self Similarity
Contact author(s): orhun @ uekae tubitak gov tr
History: 2007-02-25: revised; 2007-02-14: received; See all versions
Short URL: https://ia.cr/2007/043
License: CC BY

BibTeX

@misc{cryptoeprint:2007/043,
      author = {Orhun Kara},
      title = {Reflection Attacks on Product Ciphers},
      howpublished = {Cryptology {ePrint} Archive, Paper 2007/043},
      year = {2007},
      url = {https://eprint.iacr.org/2007/043}
}