A kind of authentication method and system based on device mac address

Abstract

The invention relates to the technical field of embedded network equipment encryption, and provides an authentication method and system based on an equipment MAC address. The authentication method comprises the steps of obtaining the MAC address, authenticating the legality of the MAC address, converting MAC address data into a dynamic secrete KEY through a specific conversion algorithm, conducting encryption on the secrete key and random numbers to generate an encrypted ciphertext, conducting decryption on the encrypted ciphertext to obtain a decrypted plaintext and comparing the decrypted plaintext with the random numbers. According to the authentication method and system, hardware and software are combined is the encryption method to execute the encryption function and the decryption function respectively. When equipment is started, the authentication process can only be completed through the matching of an encryption module and a decryption module, and only when the authentication process succeeds, can the equipment work normally. The MAC address is used for generating the secret keys through the secret key generating algorithm, and different secret KEYs can be generated according to different MAC addresses. The authentication method and system based on the equipment MAC address has the advantages that the MAC address is unique, the secret key is also unique, and therefore even if the secret key is cracked, the secret key cannot be used again.

Description

technical field [0001] The invention relates to an encryption method of an embedded network device, in particular to an authentication method and system based on the MAC address of the device. Background technique [0002] Due to the inherent characteristics of electronic products and the development of technology, more and more products are copied, intellectual property rights are violated, and product copyright owners suffer economic losses. It is particularly important to have an encryption system to protect products from being copied. Product encryption system Came into being. After years of fighting between cracking and anti-cracking, different encryption chip manufacturers have launched unique encryption chips. There are two main ways: increase the level of encryption to increase the difficulty of cracking or use a private protocol (imitation I2C protocol) to increase the difficulty of cracking. The basic principle and system composition of this method are similar, t...

AI Technical Summary

Problems solved by technology

[0007] There are common defects in the existing methods: the key KEY must be pre-defined and fixed, so there are the following problems:

[0008] 1) It needs to be kept and burned into the OTP encryption chip by a special person, which is easy to leak

[0009] 2), easy to forget or lose, not easy to maintain

[0010] 3) Although the technical improvement has increased the difficulty of cracking, there is still a risk of being cracked. Once cracked, the product will be copied

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