Method and system for safely accessing to target device by changing hardware identifiers

Abstract

The invention discloses a method for safely accessing to a target device by changing hardware identifiers. The method is used for sending messages from a source device to the target device, comprising that: the source device obtains a corresponding first sequence number according to the sending sequence of the messages, generates random numbers based on the first sequence number and a first seed and adds the generated random numbers to the hardware identifiers of the target device of corresponding messages; after receiving the messages, the target device obtains a second sequence number according to the receiving sequence of the messages, generates corresponding random numbers based on the second sequence number and a second seed stored in the target device so as to reduce the hardware identifiers in the messages, compares the reduced hardware identifiers with own hardware identifiers, receives the messages when the reduced hardware identifiers are in accord with own hardware identifiers, and discards the messages when the reduced hardware identifiers are not in accord with own hardware identifiers. The invention also discloses a corresponding system for safety accessing to the target device. In application of the invention, the illegal monitoring difficulty is increased by adding random numbers to the hardware identifier so as to hidden the hardware identifiers; and the device accessing safety is ensured.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a method and a system for safely accessing target equipment with hardware identification changes. Background technique [0002] At present, the application of monitoring in social monitoring is becoming more and more extensive. In some occasions, for example, factories must place monitoring equipment at the border of the factory area, and IPCs must be installed in remote streets. In this way, the monitoring equipment is far away from the central area, and physical security cannot be guaranteed. These IPs may be used to remotely access the central network, so various means are needed to prevent illegal access. [0003] In the prior art, the MAC address is used as the hardware identification between the source device and the destination device, and the MAC address is usually unchanged. If the source MAC address is restricted on the destination device and the trusted MAC address i...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the MAC address is used as the hardware identification between the source device and the destination device, and the MAC address is usually unchanged. If the source MAC address is restricted on the destination device and the trusted MAC address is added to prevent illegal However, at present, the address of the device can be forged by setting the MAC address forcibly, so that the destination device receives the same message sent by the illegally accessed device as the normal accessed device, and the illegally accessed device can also access, access security cannot be guaranteed

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