期刊名称：International Journal of Network Security & Its Applications
印刷版ISSN：0975-2307
电子版ISSN：0974-9330
出版年度：2017
卷号：9
期号：5
页码：35
DOI：10.5121/ijnsa.2017.9503
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：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.
