Análisis de mecanismos de gestión de clave para la protección de contenidos de voz sobre protocolo IP.

Abstract

The research: "Analysis of Key Management Mechanisms for Content Protection Protocol Voice over IP", was developed to obtain a reference guide consisted of eight phases. This study determined the level of performance on virtual servers. In a first stage, it was determined the level of security mechanisms and SDES ZRTP. Tests were performed without using encryption calls recorded and subsequently on the same stage SDES mechanism was used. It was used quantitative methods, qualitative and comparative. The following materials, such as hardware with 2 computers and software with Linux CentOS 6, Asterisk 1.8.7, 0.2.7 and Blink Softpho ne SIP client also the VPS were used. The techniques used were: performance test applied to calls made and measures: SysStat, vnstat and channelsstat. By using the method "t - Student" by far in pairs with a value of 6 for the degrees of freedom, the CPU wa s bilateral significance of 0.0010 which is less than 0.05, so does the memory where the significance is less 0.05. Therefore the null hypothesis is rejected, meaning that the level of performance in the VoIP server decreases the mechanism SDES. As conclu sion, implementing SRTP descriptions on the test environment, the level of performance in the virtual private server was decreased by 0.12%. It is recommended the use of a simulator to determine the number of simultaneous calls that can be carried on the network, implemented prior to VoIP in an enterprise.