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METHOD OF KEY EXCHANGE FOR A CRYPTOGRAPHIC SECURE POINT TO MULTIPOINT CONNECTION
METHOD OF KEY EXCHANGE FOR A CRYPTOGRAPHIC SECURE POINT TO MULTIPOINT CONNECTION
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机译：加密安全点到多点连接的密钥交换方法
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摘要
The invention relates to a method of key exchange for a cryptographic, secure, point to multipoint connection. The aim of the invention is to describe a universal method, which may be applied to existing transmission concepts and security architectures with as little modification as possible, and can, in particular, be patched into the OSI layer model without problems. Said aim is achieved with a method, whereby the key exchange occurs by a modified SSL- or TLS-protocol. The sequence of messages in the handshake which introduces the SSL session are thus altered according to a code in a server message, which characterises the connection to be made as an IP multicast connection. The master key which serves to generate the session code(s) for encoding the application data is thus generated not by the client but rather by the server in a departure form Secure Sockets Layer protocol. The IP multicast identifier is preferably a component of the Client Certification Type, requested from the server by a Certificate Request message.
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