System and method for establishing session key between nodes
A session key and inter-node technology, applied in the field of network communication, can solve problems such as unsuitability, complex wired LAN topology, complex network data communication, etc.
Active Publication Date: 2012-11-28
CHINA IWNCOMM
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Problems solved by technology
This security measure brings a huge computational burden to the switching devices in the LAN, which is easy to cause attackers to attack the switching devices; and the delay of data packets from the sending node to the destination node will also increase, reducing network transmission. efficiency
[0004] The topology of wired LAN is relatively complex, and the number of nodes involved (here, terminals and switching devices are collectively referred to as nodes) is also relatively large, so the data communication in the network is relatively complicated.
If a static key pair is allocated between LAN nodes to establish an inter-node session key, the allocation and update process is extremely complicated
Therefore, the static key pair method is not suitable for establishing session keys between nodes
Method used
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[0089] In the network, all connection devices have established a secure connection with the core connection device SW-Center in the network through pre-distribution or other security mechanisms, that is, they already have a shared key; all terminal devices only communicate with adjacent The connected devices have established a secure connection through pre-distribution or other security mechanisms, that is, they already have a shared key (the establishment mechanism of the secure connection described here is not limited or defined in the present invention).
[0090] Taking the establishment of a session key between the first terminal device STA-A and the second terminal device STA-B as an example for illustration, SW Center It is the core connection device in the network. The first connection device SW1 refers to the first connection device through which the data packet from the first terminal device STA-A to the second terminal device STA-B passes. The second connection device...
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The invention relates to a system for establishing a session key between nodes. The system comprises terminal equipment and connecting equipment, wherein the terminal equipment comprises initiating end terminal equipment and receiving end terminal equipment; the connecting equipment comprises core connecting equipment, initiating end connecting equipment on a link between the initiating end connecting equipment and the core connecting equipment and receiving end connecting equipment on a link between the receiving end connecting equipment and the core connecting equipment. The invention solves the technical problem that the distributing and the updating processes of the nodes in a local area network are extremely complicated, has flexible establishing process, can realize the establishment of the session key between the nodes without users to participate in configuration and guarantees the confidentiality of subsequent communication between the nodes.
Description
technical field [0001] The invention relates to the technical field of network communication, in particular to a system and method for establishing session keys between nodes. Background technique [0002] The wired LAN is generally a broadcast network, and the data sent by one node can be received by other nodes. All nodes on the network share the channel, which brings great security risks to the network. As long as the attacker accesses the network to monitor, he can capture all the data packets on the network. [0003] The local area network LAN defined by the existing national standard GB / T 15629.3 (corresponding to IEEE 802.3 or ISO / IEC 8802-3) does not provide data security methods, which makes it easy for attackers to steal key information. In the field of international research, the IEEE 802.1AE standard developed by IEEE provides a data encryption protocol for protecting Ethernet, and adopts hop-by-hop encryption security measures to realize the safe transmission ...
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IPC IPC(8): H04L29/06H04L9/32
CPCH04L63/061H04L9/0838H04L9/0891
Inventor 铁满霞李琴黄振海胡亚楠
Owner CHINA IWNCOMM