Reducing Packet Loss in CBC Secured VoIP using Interleaved Encryption

Author

Dansereau, R.M. ; Jin, S. ; Goubran, R.A.

Author_Institution

Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont.

fYear

2006

fDate

38838

Firstpage

1320

Lastpage

1324

Abstract

In this paper we introduce the use of interleaved encryption to improve quality of service (QoS) in VoIP secured using cipher block chaining (CBC) mode ciphers. In current secure VoIP implementations using CBC mode ciphers, a late ciphertext block causes a decryption failure in the next ciphertext block due to inter-block decryption dependencies. The decryption failure in turn further degrades the QoS of the overall communication. This paper introduces an approach to relax the inter-block decryption time constraints such that the QoS of CBC mode secured VoIP asymptotically approach that of non-secure VoIP. Experimental results on a number of captured VoIP traces show that packet loss rate can be reduced by 1-2% depending on network conditions

Keywords

Internet telephony; cryptography; quality of service; telecommunication security; QoS; cipher block chaining mode cipher; decryption; interleaved encryption; packet loss reduction; quality of service; secure VoIP; Cryptographic protocols; Cryptography; Data security; Degradation; Electronic mail; Internet telephony; Packet switching; Quality of service; Systems engineering and theory; Time factors; CBC mode; Interleaved encryption; QoS; VoIP; packet loss;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2006. CCECE '06. Canadian Conference on

Conference_Location

Ottawa, Ont.

Print_ISBN

1-4244-0038-4

Electronic_ISBN

1-4244-0038-4

Type

conf

DOI

10.1109/CCECE.2006.277417

Filename

4054845