Year: 2007
Type: dissertation
Abstract: Voice over IP is fast emerging as a strong contender to the traditional circuit-switchedPSTN networks. Unlike the PSTN network, which requires dedicated lines, VoIP can share the
network that is laid out to carry data traffic as well as other traffic categories. Securing VoIP and
other real-time traffic is necessary considering the easy ways of hacking communication over
internet. Most of the existing security solutions for VoIP such as IPSec, Secure Real Time
Protocol (SRTP) and ZRTP use the standard symmetric encryption algorithms for encrypting
voice traffic. In this thesis, the author proposes an alternate encryption scheme that uses PKI
architecture for the initial authentication and key exchange, and encrypts the real-time traffic
with a symmetric algorithm using a unique key for each packet. The proposed algorithm
expected to be less complex compared to the traditional encryption schemes in addition to
enhancing the security of the communication. The performance of the proposed algorithm has
been simulated by modifying libSRTP. The analysis carried out shows that the proposed scheme
helps in improving the voice quality to a certain extent while maintaining the security of the
communication.
Author: Gopinath Gopalakrishnan
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
Funder: Wichita State University
OpenAlex ID: W2100663100