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Redesign and Performance Analysis of RTP(Real-time Transport Protocol) for Encryption of VoIP Media Information between Different Communication Networks
Journal of The Korea Society of Computer and Information
Abbr :
JKSCI
2013, 18(4), pp.87-96
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science
2013, 18(4), pp.87-96
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science
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In this paper, we suggest redesigned RTP protocol that is able to perform encryption of VoIP media information for single private network and between the different private networks. And we conduct a test for performance analysis. Such as SRTP or ZRTP methods have been used for VoIP media encryption. But, the existing encryption techniques have problem that can not perform end-to-end encryption between different private networks. In order to solve this problem, in this paper, we redesign RTP protocol. Redesigned RTP includes all information for encryption of VoIP media. Therefore the encryption is not affected by modification of SIP and SDP information that occurred in gateway. Also, redesigned RTP includes code for whether or not to apply encryption. By using the code, modification of RTP header from gateway prevents. As a result, redesigned RTP maintain the integrity and the RTP is able to perform encryption between the different private networks. Also, we conduct a test for performance analysis of SRTP, ZRTP and redesigned RTP.
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