Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cryptanalysis of the SASI Ultralightweight RFID Authentication Protocol
  with Modular Rotations   In this work we present the first passive attack over the SASI lightweight
authentication protocol with modular rotations. This can be used to fully
recover the secret $ID$ of the RFID tag, which is the value the protocol is
designed to conceal. The attack is described initially for recovering $\lfloor
log_2(96) \rfloor=6$ bits of the secret value $ID$, a result that by itself
allows to mount traceability attacks on any given tag. However, the proposed
scheme can be extended to obtain any amount of bits of the secret $ID$,
provided a sufficiently large number of successful consecutive sessions are
eavesdropped. We also present results on the attack's efficiency, and some
ideas to secure this version of the SASI protocol.

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The categories of this paper are: astro-ph
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The categories of this paper are: nlin
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-th
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The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
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The categories of this paper are: eess
30
The categories of this paper are: q-alg
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The categories of this paper are: comp-gas
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The categories of this paper are: econ