XCRUSH: A Family of ARX Block Ciphers
Abstract
The XCRUSH family of non-Feistel, ARX block ciphers is designed to make efficient use of modern 64-bit general-purpose processors using a small number of encryption rounds which are simple to implement in software. The avalanche function, which applies one data-dependent, key-dependent rotation per 64-bit word of plaintext per round, allows XCRUSH to achieve an almost totally diffuse 256-bit block after just the first two rounds. Designed for speed in software, 3-round XCRUSH is measured at ~7.3 cycles/byte single-threaded on an Intel Haswell processor. A pseudorandom number generator, constructed using the avalanche function, serves as a key scheduling algorithm. No security claims are made in this paper.
Keywords
Cite
@article{arxiv.1509.02584,
title = {XCRUSH: A Family of ARX Block Ciphers},
author = {Evan Saulpaugh},
journal= {arXiv preprint arXiv:1509.02584},
year = {2016}
}
Comments
14 pages, 2 figures. Includes test vectors and C99 reference implementation