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11. 发明申请

WO2011031439A1 SECURE KEY MANAGEMENT IN MULTIMEDIA COMMUNICATION SYSTEM 审中-公开
标题翻译：多媒体通信系统中的安全密钥管理
公开(公告)号：WO2011031439A1
公开(公告)日：2011-03-17
申请号：PCT/US2010/046342
申请日：2010-08-23
申请人： ALCATEL-LUCENT USA INC. , SUNDARAM, Ganapathy, S. , CAKULEV, Violeta
发明人： SUNDARAM, Ganapathy, S. , CAKULEV, Violeta
IPC分类号： H04L9/08
CPC分类号： H04L63/306 , H04L9/0825 , H04L9/0833 , H04L9/0847 , H04L9/0894 , H04L9/3073 , H04L2209/80
摘要： Principles of the invention provide one or more secure key management protocols for use in communication environments such as a media plane of a multimedia communication system. For example, a method for performing an authenticated key agreement protocol, in accordance with a multimedia communication system, between a first party and a second party comprises, at the first party, the following steps. Note that encryption/decryption is performed in accordance with an identity based encryption operation. At least one private key for the first party is obtained from a key service. A first message comprising an encrypted first random key component is sent from the first party to the second party, the first random key component having been computed at the first party, and the first message having been encrypted using a public key of the second party. A second message comprising an encrypted random key component pair is received at the first party from the second party, the random key component pair having been formed from the first random key component and a second random key component computed at the second party, and the second message having been encrypted at the second party using a public key of the first party. The second message is decrypted by the first party using the private key obtained by the first party from the key service to obtain the second random key component. A third message comprising the second random key component is sent from the first party to the second party, the third message having been encrypted using the public key of the second party. The first party computes a secure key based on the second random key component, the secure key being used for conducting at least one call session with the second party via a media plane of the multimedia communication system.
摘要翻译：本发明的原理提供了一种或多种用于诸如多媒体通信系统的媒体平面的通信环境中的安全密钥管理协议。例如，在第一方和第二方之间执行根据多媒体通信系统的认证密钥协商协议的方法包括在第一方处理以下步骤。注意，根据基于身份的加密操作来执行加密/解密。从关键服务获得至少一个第一方私钥。包括加密的第一随机密钥组件的第一消息从第一方发送到第二方，第一随机密钥组件已经在第一方计算，并且第一消息已经使用第二方的公钥加密。在第一方从第二方接收包括加密的随机密钥分量对的第二消息，所述随机密钥分量对已经由第一随机密钥分量和在第二方计算的第二随机密钥分量形成，消息已经使用第一方的公钥在第二方加密。由第一方使用由密钥服务获得的第一方获得的私钥来解密第二消息以获得第二随机密钥分量。包括第二随机密钥分量的第三消息从第一方发送到第二方，第三消息已经使用第二方的公钥加密。第一方基于第二随机密钥组件计算安全密钥，该安全密钥用于经由多媒体通信系统的媒体平面与第二方进行至少一个呼叫会话。

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