Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the provable security of BEAR and LION schemes   BEAR, LION and LIONESS are block ciphers presented by Biham and Anderson
(1996), inspired by the famous Luby-Rackoff constructions of block ciphers from
other cryptographic primitives (1988). The ciphers proposed by Biham and
Anderson are based on one stream cipher and one hash function. Good properties
of the primitives ensure good properties of the block cipher. In particular,
they are able to prove that their ciphers are immune to any efficient
known-plaintext key-recovery attack that can use as input only one
plaintext-ciphertext pair. Our contribution is showing that these ciphers are
actually immune to any efficient known-plaintext key-recovery attack that can
use as input any number of plaintext-ciphertext pairs. We are able to get this
improvement by using slightly weaker hypotheses on the primitives. We also
discuss the attack by Morin (1996).

24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th