| 摘要 |
A communication network ( 22 ) includes a central node ( 30 ) loaded with a trusted key ( 26 ) and key material ( 56 ) corresponding to an asymmetric key agreement protocol ( 48 ). The network ( 22 ) further includes vulnerable nodes ( 32 ) loaded with key material ( 69 ) corresponding to the protocol ( 48 ). Successive secure connections ( 68, 70 ) are established between the central node ( 30 ) and the vulnerable nodes ( 32 ) using the key material ( 56, 69 ) to generate a distinct session key ( 52 ) for each of the secure connections ( 68, 70 ). The trusted key ( 26 ) and one of the session keys ( 52 ) are utilized to produce a mission key ( 39 ). The mission key ( 39 ) is transferred from the central node ( 30 ) to each of the vulnerable nodes ( 32 ) via each of the secure connections ( 68, 70 ) using the corresponding current session key ( 52 ). The mission key ( 39 ) functions for secure communication within the communication network ( 22 ).
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