Patent ID: 9264405
Filing Date: 2016-02-16
CPC Classification: H04L

Claim Text:
1. A switch device supporting link layer secured transmission, wherein the switch device supporting link layer secured transmission comprises a switch module and a plurality of port modules, and the port modules are electrically connected respectively with the switch module; and the port modules support a link layer key management capability and are configured to create shared keys between the switch device and another network node for encrypting and decrypting a data frame, wherein the port modules comprise a port, Port X, and a port, Port Y, each comprising an algorithm module, an interface module, a security process module and a key management module, and the security process module is electrically connected respectively with the interface module, the algorithm module and the key management module, wherein the key management module is configured to manage and store the shared keys; and the algorithm module relates to encryption and decryption algorithms and/or an integrity check algorithm and is embodied in hardware or in software, wherein Port X represents a first port module of the switch device, which is an input port of a data frame, Frame A, wherein port Y is a second port module of the switch device, which is an output port of the data frame, Frame A, wherein the interface module of the port, Port X, of the switch device is configured to receive a data frame, Frame A the security process module of the port, Port X, of the switch device is configured to process Frame A the switch module of the switch device is configured to extract information of the second header of Frame A the security process module of the port, Port Y, of the switch device is configured to process Frame A wherein Frame A Frame A Frame A if Frame A