Secure communication system and method of main control chip and encryption chip

Abstract

The invention discloses a secure communication system of a main control chip and an encryption chip. The system comprises the main control chip and the encryption chip, wherein the main control chip is connected with the encryption chip; the main control chip and the encryption chip perform authentication via challenge response; the main control chip comprises a random number generation module, afirst encryption and decryption operation module and a first secure storage module; and the encryption chip comprises a counter module, a second encryption and decryption operation module and a secondsecure storage module. The invention also discloses a secure communication method of the main control chip and the encryption chip. The invention relates to the technical field of secure communication, and in particular relates to the secure communication system and method of the main control chip and the encryption chip. The main control chip and the encryption chip perform authentication via challenge response, the chip is effectively prevented from being illegally tampered, a random number is used as a key, communication data between the main control chip and the encryption chip is subjected to encryption treatment and decryption treatment by using the encryption and decryption operation modules, the data transmission security is effectively ensured, and the data exchange security is ensured.

Description

technical field [0001] The invention relates to the technical field of secure communication, in particular to a secure communication system and method for a main control chip and an encryption chip. Background technique [0002] With the continuous development of integrated circuits and the emergence of multi-chip packaging technology, the functions of electronic devices are becoming more and more diverse. A multi-chip package (MultiChip Package, MCP) in which multiple chips are packaged together can solve the problems of single chip integration and imperfect functions. Today, the main control chip and encryption chip of most smartphones are integrated with chipsets, and the encryption chip is used as a cryptographic device to process key data and improve the security processing and data storage capabilities of electronic equipment. When the main control chip sets the key for the encryption chip, sends instructions or sends other key data, it is extremely unsafe to use clea...

AI Technical Summary

Problems solved by technology

When the main control chip sets the key for the encryption chip, sends instructions or sends other key data, it is extremely unsafe to use clear text transmission, even if the chips are packaged together, it is easy for illegal personnel to steal the key of communication through technical means data

[0003] In the prior art, the main control chip and the encryption chip use a fixed session key to encrypt data to generate ciphertext for secure data transmission. Although the key encrypts the data, the data transmission has certain confidentiality, but due to The key is fixed, and each data transmission is encrypted with the same key, which is vulnerable to illegal cracking and replay attacks

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