Voice over Internet Protocol (VoIP) is one of the emerging communication technologies. The use of VoIP has the threat of tapping. Therefore, it is necessary to implement security services for VoIP, one of them using SSL-VPN. SSL-VPN uses cipher suites that contain a collection of cryptographic algorithms to provide various cryptographic services, starting from authentication, key exchange, encryption and message digest. In this study, modification of cipher suites was carried out in SSL-VPN, by implementing the Salsa20 stream cipher algorithm as an alternative to TLS cipher suites. Furthermore, the results of the alternative implementation of TLS cipher suites are used and tested to secure VoIP communication. Tests carried out are vectors test, data transfer speed performance test, and measurement of QoS dan MOS of VoIP communication secured with the alternative Salsa20 TLS cipher suite.
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机译：互联网协议的声音（VoIP）是新兴通信技术之一。 VoIP的使用具有攻丝的威胁。因此，有必要使用SSL-VPN实现VoIP的安全服务。 SSL-VPN使用包含加密算法集合的密码套件来提供各种加密服务，从身份验证，密钥交换，加密和消息摘要开始。在该研究中，通过将SALSA20流密码算法实施为TLS密码套件的替代方案，在SSL-VPN中进行密码套件的修改。此外，使用并测试TLS密码套件的替代实施的结果以保护VoIP通信。进行的测试是测试，数据传输速度性能测试和VoIP通信的QoS DAN MOS的测量，用替代的Salsa20 TLS密码套件固定。
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