Authors:
Gregory Epiphaniou
1
;
Carsten Maple
1
;
Paul Sant
1
and
Matthew Reeve
2
Affiliations:
1
University of Bedfordshire, United Kingdom
;
2
Modern Networks, United Kingdom
Keyword(s):
VoIP, DES, 3DES, AES, HMAC-SHA-1, NS-2.
Related
Ontology
Subjects/Areas/Topics:
Multimedia
;
Multimedia and Communications
;
Multimedia Security and Cryptography
;
Performance Measurement and Evaluation, Qos.
;
Telecommunications
Abstract:
IP telephony (IPTel) refers to the technology to transport real-time media over an IP network. This technology is considered as the key to providing advanced communication for end users at an affordable price whilst also assuring significant cost savings for the Internet Telephony Service Providers (ITSP). As with adoption of any new technology, utilizing VoIP is not without its risks. Digitizing voice that can be routed through hostile environments such as packet switched networks makes VoIP vulnerable to all of the risks of an IP network including viruses, Denial of Service (DOS) attacks and conversation eavesdropping. This paper focuses on the effects of iterative block ciphers on VoIP traffic in terms of average end-to-end delay and packet loss rates. We have tested the majority of voice codecs as well as all the variable payload sizes they can support. Finally, the simulations have been carried out by using the NS-2 network simulator.