Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Steganography and Broadcasting   Informally, steganography is the process of exchanging a secret message
between two communicating entities so that an eavesdropper may not know that a
message has been sent. After a review of some steganographic systems, we found
that these systems have some defects. First, there are situations in which some
concealment algorithms do not properly hide a secret message. Second, to
conceal one bit of a secret message, some ask at least five documents and make
at least two sampling operations, thus increasing their run-times. Considering
the different ways to communicate with the receiver, we propose two
steganographic systems adapted to the email communication whose algorithms are
deterministic. To hide one bit of a secret message, our steganographic systems
need only one document and performs one sampling operation and therefore
significantly reduces the run-time.

31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int