Encryption communication method and system of Arm architecture application processor

Abstract

The invention discloses an encryption communication method and system of an Arm architecture application processor. The method comprises: an application operating system being made to run at a first-level exception level of the application processor; a microkernel system which at least performs memory allocation management and control running in a second-level exception level, higher than the first-level exception level, of the application processor, wherein the microkernel system divides a memory into a first memory area and a second memory area; the microkernel system enabling the application operating system to only read and write the first memory area, the communication chip only reading and writing the second memory area, and performing reading and writing between the first memory area and the second memory area through a hardware encryption module arranged outside the application processor. According to the invention, the risk that encryption is bypassed can be greatly reduced, so that communication is safer.

Description

technical field [0001] The present application relates to the field of electrical digital data processing, in particular to an encrypted communication method and system for an Arm architecture application processor. Background technique [0002] From a narrow perspective, System on Chip (SoC) is the chip integration at the core of an information system, which integrates key components of the system on a single chip; from a broad perspective, SoC is a micro-miniature system. Academic circles at home and abroad generally tend to define SoC as the integration of microprocessor, analog IP core, digital IP core and memory (or off-chip storage control interface) on a single chip, which is usually a custom-made or specific-purpose standard product. [0003] In the Arm (Advanced RISC Machine, advanced reduced instruction set machine) V8 architecture, the Application (application) is located at the EL0 level with the lowest privilege level, the Guest OS (Linux kernel, window, etc.) ...

AI Technical Summary

Problems solved by technology

However, due to the SoC integration scheme, the hardware is already fixed, and it is inconvenient to embed the encryption module

At this time, if encrypted communication is required, only the call-type cryptographic module can be used, and the existing encrypted communication method has the risk of being bypassed

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