Bus data protection method, device, storage medium and chip

Abstract

The application discloses a bus data protection method, device, storage medium and chip, belonging to the technical field of chip security. The method includes: when the first module is a master module, the second module is a slave module, and the first module performs a write operation to the second module, or, when the first module is a slave module, the second module is a master module, and the second When the second module performs a read operation to the first module, the first module sends the sensitive data to the bus encryption module; the bus encryption module obtains the first random number, and sends the encrypted data obtained by encrypting the sensitive data according to the first random number to the bus; The bus sends the encrypted data to the bus decryption module; the bus decryption module obtains the second random number, and sends the sensitive data obtained by decrypting the encrypted data according to the second random number to the second module, and the second random number is the same as the first random number . The embodiment of the present application can ensure the consistency of random numbers, improve the security and accuracy of data transmission, and reduce the overhead of bus bit width.

Description

technical field [0001] The embodiments of the present application relate to the field of chip security, and in particular to a bus data protection method, device, storage medium, and chip. Background technique [0002] As the core component of the system, chips play a pivotal role in major fields such as computers, consumer electronics, network communications, and automotive electronics. In order to improve the security of sensitive data in the chip, the entire process of sensitive data in the chip from generation (one end) to use / consumption (one end) needs to be protected by encryption. Currently, the more common encryption protection technology is bus encryption technology. [0003] Most of the current chips use a bus to connect the master module and the slave module, thereby realizing the data interconnection between the master and slave modules. In many chips, the bus is a topological structure spread throughout the chip, which can physically exist in various parts of ...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a bus data protection method, device, storage medium and chip, which are used to solve the problem of low security and increased bus bit width when transmitting masked sensitive data and masked random numbers on the bus at the same time the cost of the problem

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