Embedded Implementation of LASH

Dan Page, Embedded Implementation of LASH. CSTR-07-003, University of Bristol. May 2007. PDF, 135 Kbytes.


With the security of standardised cryptographic hash functions in question, interest in new designs based on provably secure foundations has been reignited. LASH is a hash function design whose security is related to hard lattice problems. Although the tightness of the security reduction is dubious, LASH makes an interesting trade-off in that it is claimed to offer efficient implementations in comparison to alternatives such as VSH. In this paper we investigate this claim by investigating implementations of LASH in software and hardware, and by examining the issue of physical security; all of these aspects are crucial to the deployment of LASH in an embedded environment.

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