TRUSTED KERNEL-BASED ATTACK-PREVENTION DATA PROCESSOR

Title:

TRUSTED KERNEL-BASED ATTACK-PREVENTION DATA PROCESSOR

Document Type and Number:

WIPO Patent Application WO/2019/024708

Kind Code:

A1

Abstract:

Provided in the present invention is a trusted kernel-based attack-prevention data processor, comprising: a trusted kernel exception vector table, which is used to provide a processing entry for kernel switching; a trusted kernel stack pointer register, which is used to store a trusted kernel stack pointer that points to a trusted kernel stack space; and a trusted site within the trusted kernel stack space, wherein the trusted site comprises a program status register that is used to store an initial kernel flag bit of kernel switching, as well as a program pointer and a universal register; when the data processor executes kernel switching from a non-trusted kernel to a trusted kernel, said trusted kernel is addressed to the processing entry of said kernel switching, and switching is executed. The present invention is able to provide an underlying software protection mechanism for a switching entry of a trusted kernel, so that switching between a trusted kernel and a non-trusted kernel is more secure.

Inventors:

CUI XIAOXIA (CN)
LI CHUNQIANG (CN)
HOU GUANGEN (CN)
CHEN LI (CN)

Application Number:

PCT/CN2018/096759

Publication Date:

February 07, 2019

Filing Date:

July 24, 2018

Export Citation:

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Assignee:

C SKY MICROSYSTEMS CO LTD (CN)

International Classes:

G06F21/74

Foreign References:

CN107463856A	2017-12-12
CN106599717A	2017-04-26
CN106778365A	2017-05-31
US20030225817A1	2003-12-04

Other References: