Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the equivalence of authentication codes and robust (2,2)-threshold
  schemes   In this paper, we show a "direct" equivalence between certain authentication
codes and robust secret sharing schemes. It was previously known that
authentication codes and robust secret sharing schemes are closely related to
similar types of designs, but direct equivalences had not been considered in
the literature. Our new equivalences motivate the consideration of a certain
"key-substitution attack." We study this attack and analyze it in the setting
of "dual authentication codes." We also show how this viewpoint provides a nice
way to prove properties and generalizations of some known constructions.

23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin