Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: QRKE: Resistance to Attacks using the Inverse of the Cosine
  Representation of Chebyshev Polynomials   We've been able to show recently that Permutable Chebyshev polynomials (T
polynomials) defined over the field of real numbers can be used to create a
Diffie-Hellman-like key exchange algorithm and certificates. The cryptosystem
was theoretically proven to withstand attacks using quantum computers. We
additionally prove that attacks based on the inverse of the cosine
representation of T polynomials fail.

14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
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The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph