Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Using data compression and randomization to build an unconditionally
  secure short key cipher   We consider the problem of constructing an unconditionally secure cipher for
the case when the key length is less than the length of the encrypted message.
(Unconditional security means that a computationally unbounded adversary cannot
obtain information about the encrypted message without the key.) In this
article, we propose data compression and randomization techniques combined with
entropically-secure encryption. The resulting cipher can be used for encryption
in such a way that the key length does not depend on the entropy or the length
of the encrypted message; instead, it is determined by the required security
level.

37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int