Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cryptanalysis of three matrix-based key establishment protocols   We cryptanalyse a matrix-based key transport protocol due to Baumslag, Camps,
Fine, Rosenberger and Xu from 2006. We also cryptanalyse two recently proposed
matrix-based key agreement protocols, due to Habeeb, Kahrobaei and Shpilrain,
and due to Romanczuk and Ustimenko.

13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat