| 摘要 |
A communication system includes a first node, a second node and, at least one intermediate node between said first and second nodes. The first and second nodes are arranged to be in communication. The first and second nodes have a first security association and one of the intermediate nodes and the second node have a second security association. The first security association authenticates the second node to the first node and the second security association authenticates the at least one intermediate node to the second node.
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