Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum multi-factor authentication   We present a quantum multi-factor authentication mechanism based on the
hidden-matching quantum communication complexity problem. It offers step-up
graded authentication for users via a quantum token. In this paper, we outline
the protocol, demonstrate that it can be used in a largely classical setting,
explain how it can be implemented in SASL, and discuss arising security
features. We also offer a comparison between our mechanism and current
state-of-the-art multi-factor authentication mechanisms.

7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga