Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Estimating short-time period to break different types of chaotic
  modulation based secure communications   In recent years, chaotic attractors have been extensively used in the design
of secure communication systems. One of the preferred ways of transmitting the
information signal is binary chaotic modulation, in which a binary message
modulates a parameter of the chaotic generator. This paper presents a method of
attack based on estimating the short-time period of the ciphertext generated
from the modulated chaotic attractor. By calculating and then filtering the
short-time period of the transmitted signal it is possible to obtain the binary
information signal with great accuracy without any knowledge of the parameters
of the underlying chaotic system. This method is successfully applied to
various secure communication systems proposed in the literature based on
different chaotic attractors.

28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math