Paper 2016/707
Towards a Characterization of the Related-Key Attack Security of the Iterated Even-Mansour Cipher
Dana Dachman-Soled, Angela Park, and Ben San Nicolas
Abstract
We prove the related-key security of the Iterated Even-Mansour cipher under broad classes of related key derivation (RKD) functions. Our result extends the classes of RKD functions considered by Farshim and Procter (FSE, 15). Moreover, we present a far simpler proof which uses techniques similar to those used by Cogliati and Seurin (EUROCRYPT, 15) in their proof that the four-round Even-Mansour cipher is secure against XOR related-key attacks---a special case of our result and the result of Farshim and Proctor. Finally, we give a concrete example of a class of RKD functions covered by our result which does not satisfy the requirements given by Farshim and Procter and prove that the three-round Even-Mansour cipher is secure against this class of RKD functions.
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- Iterated Even-Mansour cipherrelated-key attack
- Contact author(s)
- danadach @ ece umd edu
- History
- 2016-07-18: received
- Short URL
- https://ia.cr/2016/707
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2016/707,
author = {Dana Dachman-Soled and Angela Park and Ben San Nicolas},
title = {Towards a Characterization of the Related-Key Attack Security of the Iterated Even-Mansour Cipher},
howpublished = {Cryptology ePrint Archive, Paper 2016/707},
year = {2016},
note = {\url{https://eprint.iacr.org/2016/707}},
url = {https://eprint.iacr.org/2016/707}
}
