Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Directly Public Verifiable Signcryption Scheme based on Elliptic
  Curves   A directly public verifiable signcryption scheme is introduced in this paper
that provides the security attributes of message confidentiality,
authentication, integrity, non-repudiation, unforgeability, and forward secrecy
of message confidentiality. It provides the attribute of direct public
verifiability so anyone can verify the signcryption without any need for any
secret information from the corresponding participants. The proposed scheme is
based on elliptic curve cryptography and is so suitable for environments with
resource constraints.

2
The categories of this paper are: math
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat