Secure VoIP Using a Bare PC

Author

Khaksari, Gholam H. ; Wijesinha, Alexander L. ; Karne, Ramesh K.

Author_Institution

Pennsylvania State Univ., University Park, PA, USA

fYear

2009

fDate

20-23 Dec. 2009

Firstpage

1

Lastpage

5

Abstract

Bare PC applications do not use an operating system or hard disk. We present a lightweight VoIP security scheme for a bare PC softphone that consists of an RSA-based key exchange, AES voice encryption, and SHA-1 data integrity and authentication. The scheme is easily extended to incorporate replay protection and a key derivation function as specified in SRTP for example. Experimental results comparing this security scheme on bare PC and Windows softphones show that the bare PC softphone has packet inter-arrival times (delta) that are closer to the ideal value, and intrinsic jitter values that are smaller and less variable. Moreover, the total time to complete the key exchange, and the time to generate RSA keys of various sizes or a number of RSA keys of a given size are significantly less on the bare PC softphone.

Keywords

Internet telephony; computer network security; cryptography; data integrity; jitter; message authentication; transport protocols; AES voice encryption; RSA keys; RSA-based key exchange; SHA-1 data integrity; SRTP; VoIP security; VoIP security scheme; Windows softphones; authentication; bare PC applications; bare PC softphone; hard disk; intrinsic jitter values; key derivation function; operating system; packet inter-arrival times; replay protection; Authentication; Cryptography; Data security; Hard disks; Hardware; Jitter; Operating systems; Portable computers; Protection; Streaming media;

fLanguage

English

Publisher

ieee

Conference_Titel

New Technologies, Mobility and Security (NTMS), 2009 3rd International Conference on

Conference_Location

Cairo

Print_ISBN

978-1-4244-4765-7

Type

conf

DOI

10.1109/NTMS.2009.5384773

Filename

5384773