Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dual Layer Textual Message Cryptosystem with Randomized Sequence of
  Symmetric Key   This paper introduces a new concept of textual message encryption and
decryption through a pool of randomized symmetric key and the dual layer
cryptosystem with the concept of visual cryptography and steganography. A
textual message is converted into two image slides, and the images are
encrypted through two different randomized sequences of symmetric key. The
decryption is done in the reverse way. The encrypted images are decrypted by
those two symmetric keys. The decrypted image slides are merged together and
converted into textual message. Here the image sharing is done through the
concept of visual cryptography and the textual message to image conversion is
done through the concept of steganography.

13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
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The categories of this paper are: q-fin
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The categories of this paper are: alg-geom
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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th
37
The categories of this paper are: supr-con