公开(公告)号：US20100002880A1

公开(公告)日：2010-01-07

申请号：US12181543

申请日：2008-07-29

申请人： Seok Ung Yoon ,  Joong Man Kim ,  Yong Geun Won ,  Yoo Jae Won ,  Hyun Cheol Jeong

发明人： Seok Ung Yoon ,  Joong Man Kim ,  Yong Geun Won ,  Yoo Jae Won ,  Hyun Cheol Jeong

IPC分类号： H04L9/08 ,  H04K1/00 ,  H04L9/00

CPC分类号： H04L12/66 ,  H04L9/083 ,  H04L9/0894 ,  H04L63/0428 ,  H04L63/06 ,  H04L63/10 ,  H04L63/306

摘要： Disclosed is a system for lawful interception using a trusted third party in secure VoIP communication. A VoIP transmit terminal generates a secure packet using a master key received from a trusted third party and then communicates with a VoIP receive terminal. A collection device having received a lawful interception instruction from a key recovering system collects and transmits the secure packet to the key recovering system. The key recovering system decrypts the secure packet using the master key received from the trusted third party and provides the decrypted secure packet to a lawful interception requester or provides the master key received from the trusted third party and the secure packet to the lawful interception requester. It is possible to provide the perfect lawful interception in the secure VoIP communication environment, and to guarantee a perfect forward secrecy since the master key is changed for each call.

摘要翻译： 公开了一种使用可靠的第三方在安全VoIP通信中合法拦截的系统。 VoIP发送终端使用从可信第三方接收的主密钥生成安全分组，然后与VoIP接收终端通信。 收到来自密钥恢复系统的合法拦截指令的收集装置收集并将密钥发送到密钥恢复系统。 密钥恢复系统使用从受信任的第三方接收的主密钥来解密安全分组，并将解密的安全分组提供给合法的截取请求者，或者将从受信任的第三方接收的主密钥和安全分组提供给合法拦截请求者。 可以在安全的VoIP通信环境中提供完美的合法拦截，并且为每个呼叫改变主密钥，保证完美的前向保密。

公开(公告)号：US20090138697A1

公开(公告)日：2009-05-28

申请号：US12181582

申请日：2008-07-29

申请人： Joong Man KIM ,  Hwan Kuk Kim ,  Seok Ung Yoon ,  Chae Tae Im ,  Young Duk Cho ,  Yong Geun Won ,  Tai Jin Lee ,  Yoo Jae Won

发明人： Joong Man KIM ,  Hwan Kuk Kim ,  Seok Ung Yoon ,  Chae Tae Im ,  Young Duk Cho ,  Yong Geun Won ,  Tai Jin Lee ,  Yoo Jae Won

IPC分类号： H04L9/00

CPC分类号： H04L63/04 ,  H04L65/1059 ,  H04L65/1069

摘要： Disclosed are a user agent providing secure VoIP communication and a secure communication method using the same. A user agent of the invention has an additional module for providing a secure function as well as a module for providing general communication, thereby supporting the secure communication. In addition, as a secure communication method using the user agent, a signaling security mechanism negotiation method and a media encryption algorithm negotiation method are provided. Hence, it is possible to provide internet telephone users with a secure VoIP communication service.

摘要翻译： 公开了提供安全VoIP通信的用户代理和使用该通信的安全通信方法。 本发明的用户代理具有用于提供安全功能的附加模块以及用于提供通用通信的模块，从而支持安全通信。 另外，作为使用用户代理的安全通信方式，提供信令安全机制协商方法和媒体加密算法协商方法。 因此，可以为互联网电话用户提供安全的VoIP通信服务。