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11. 发明申请

WO2008036097A1 DYNAMIC KEY EXCHANGE FOR CALL FORKING SCENARIOS 审中-公开
标题翻译：用于呼叫场景的动态关键交换机
公开(公告)号：WO2008036097A1
公开(公告)日：2008-03-27
申请号：PCT/US2006/038417
申请日：2006-09-29
申请人： SIEMENS COMMUNICATIONS, INC. , SAMAYAMANTRY, Mallikarjuna , RUETSCHI, Johannes , KUCMEROWSKI, Dennis , PRANGE, Holger
发明人： SAMAYAMANTRY, Mallikarjuna , RUETSCHI, Johannes , KUCMEROWSKI, Dennis , PRANGE, Holger
IPC分类号： H04L9/08 , H04M7/00 , H04L29/06
CPC分类号： H04M7/0078 , H04L29/06027 , H04L63/06 , H04L65/1006
摘要： The application relates to a call forking dynamic key exchange system and a method for securing multiple-call telecommunications. Prior art mechanisms to establish secure voice of IP communication calls involves exchange of components of the security keys that are used for media encryption. In MIKEY option 3, also referred to as Dif f ie-Hellman exchange, a key negotiation technique is used where each end of the call provides one half of the key. In the prior art a B-Party sends back a security answer to an A-Party which is the call originating party. However, this form of dynamic key exchange requires high processing power for the originating device when a call is forked since the originating party must negotiate the key independently with each called device. This problem is solved by the application in that all destinations are instructed not to respond with the second half of the key until the call has been answered and subsequently a period of silence is detected enabling the answering destination to send the second half of the key.
摘要翻译：该应用涉及一种呼叫分叉动态密钥交换系统和一种用于保护多呼叫电信的方法。用于建立IP通信呼叫的安全语音的现有技术机制涉及交换用于媒体加密的安全密钥的组件。在MIKEY选项3中，也称为Dif f ie-Hellman交换，使用密钥协商技术，其中每个呼叫结束提供一半密钥。在现有技术中，B方向作为呼叫发起方的A方发送安全答案。然而，当呼叫被分叉时，这种形式的动态密钥交换需要用于始发设备的高处理能力，因为始发方必须与每个被叫设备独立地协商密钥。该应用程序解决了这个问题，即所有目的地被指示不用密钥的后半部分响应，直到呼叫已被应答，并且随后检测到使得应答目的地发送密钥的后半部分的静默期。

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