International Journal of Network Security & Its Applications (IJNSA) - ERA, WJCI Indexed

International Journal of Network Security & Its Applications (IJNSA) - ERA, WJCI Indexed
ISSN: 0974 - 9330 (Online); 0975 - 2307 (Print)

Webpage URL: https://airccse.org/journal/ijnsa.html

Protocol Safety of VOIP Using the Cryptosystems Based on Elliptic Curve
Layie Paul and Vivient Corneille Kamla, University of Ngaoundere, Cameroon

Abstract
VoIP (Voice over Internet Protocol) is used for peer-to-peer or multi-points communications. SRTP (Secure Real-Time protocol) is used for peer-to-peer communications which are no longer suitable when you want to do multi-point of VoIP. SRTP uses DH (Diffie Hellman) for key exchange but does not make the certification. This means that SRTP does not guarantee non-repudiation service and presents security vulnerabilities during exchanges of keys. In this work, we propose ECMSRTP (Elliptic curve Multi-point Secure Real Time Protocol) which is a new VoIP security protocol for multi-point communications. It uses the certification mechanism, ensures non-repudiation and makes encryption using El-Gamal based on elliptic curves. Performance analysis shows that this new protocol has a latency time better than SRTP. It has a complexity of O(n2) for key exchange against O(n ) for SRTP, O(n2) for encryption against O(2n) for SRTP and O( ) for signature against O(n2) for SRTP.

Keywords
VoIP, Elliptic Curve, Cryptosystem, Protocol safety

 

Original Source URL: https://aircconline.com/ijnsa/V9N5/9517ijnsa03.pdf

Volume URL: https://airccse.org/journal/jnsa17_current.html