Studies on security algorithms for VOIP network

Abstract

Voice over Internet Protocol VoIP deals with real time newlinetransmission of voice packets over internet protocol Security services like newlineconfidentiality message integrity and authentication are to be provided in newlineVoIP to address various threats Most of the existing security algorithms are newlinenot suitable for VoIP as providing security for voice is different from that of newlinedata newlineVoIP packets are easy to eavesdrop by hackers due to the use of newlineDiffie Hellman DH algorithm for single common key exchange between newlinetwo end users and Advanced Encryption Standard AES algorithm for newlineencryption To change the encryption key dynamically updated dynamic key newlinesolution is used But this solution is not secure as there is a possibility for the newlinehacker to identify the seed that is used to generate the key The Elliptic Curve newlineDiffie Hellman ECDH algorithm available in the literature chooses random newlineseeds by considering an arbitrary point in the elliptic curve newline