Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on "A special attack on the multiparty quantum secret sharing of
  secure direct communication using single photons"   In this comment, we show that the special attack [S.-J. Qin, F. Gao, Q.-Y.
Wen, F.-C. Zhu, Opt. Commun. 281 (2008) 5472.], which claims to be able to
obtain all the transmitted secret message bit values of the protocol of the
multiparty quantum secret sharing of secure direct communication using single
photons with random phase shift operations, fails. Furthermore, a class of
similar attacks are also shown to fail to extract the secrete message.

17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga