Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Wireless Public key Infrastructure for Mobile Phones   Mobile devices play an important role in the wireless network environment for
providing different services over internet. The business transactions over
wireless electronic devices are not secure and hence the messages are prone to
be intercepted and modified by an intruder. So, devices supporting wireless
internet must be guaranteed at the same level of security as the wired network.
PKI (Public Key Infrastructure) used in the wired environment is not suitable
for wireless environment because of the less powerful processor and small
memory. This arises a need for the development of a Wireless Public Key
Infrastructure (WPKI) that provides the similar security level as the wired PKI
suitable for mobile phone. In this paper, a discussion of public key
infrastructure and an experimental set up for Wireless Public key
Infrastructure for mobile phones are made.

17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
19
The categories of this paper are: eess