Abstract
This paper presents xmx, a new symmetric block cipher optimized for public-key libraries and microcontrollers with arithmetic co-processors, xmx has no S-boxes and uses only modular multiplications and xors. The complete scheme can be described by a couple of compact formulae that offer several interesting time-space trade-offs (number of rounds/key-size for constant security). In practice, xmx appears to be tiny and fast:136 code bytes and a 121 kilo-bits/second throughput on a Siemens SLE44CR80s smart-card (5 MHz oscillator).
Cite
CITATION STYLE
M’Raïhi, D., Naccache, D., Stern, J., & Vaudenay, S. (1997). XMX: A firmware-oriented block cipher based on modular multiplications. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 1267, pp. 166–171). Springer Verlag. https://doi.org/10.1007/bfb0052344
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