SECURING VOIP COMMUNICATIONS IN AN OPEN NETWORK

Mukund Sarma

Abstract: Channeling voice calls over IP networks has brought many advantages to enterprise communications, but it also creates some security risks. In this paper a technique to enhance the security of vocal and text communication is proposed. This technique is a combination of multipath routing and secret sharing scheme. Information is conveyed securely from one person to another over an open network using the secret sharing scheme. The original data is divided into two shares and each of these shares is sent over the open network through multiple different paths using the multipath routing technique. In case of a man-in-the-middle attack the person will not obtain any information of the original form with only one of the shares. Only if the person collects both the shares he/she can reconstruct the original information. A mechanism to secure SIP (Session Initiation Protocol) and text communication is also discussed in this paper

Keywords: VoIP, Secret sharing scheme, Multipath routing, Speech compression, RTP, TLS, SIP

DOI: https://doi.org/10.15623/ijret.2014.0319002