TEE access control method and mobile terminal for achieving same

Abstract

The invention relates to an access control method of a multimedia system on a secure operating system and a mobile terminal for achieving the method.The method comprises the steps that an application access request for selecting dependable applications is initiated for the secure operating system from client side applications of the multimedia system; whether the current client applications initiating calling are vicious applications or not is judged, if not, the next step continues, and if yes, the information that selection fails is returned to the client side applications, and processing is interrupted; the application access request is sent to the secure operating system from the multimedia system; the dependable applications are obtained in the secure operating system according to the application access request and returned to the multimedia system.According to the method, vicious access initiated by the vicious applications to the dependable applications in the secure operating system can be prevented under the condition of not switching the systems, and the problem that access to the dependable applications cannot be achieved due to vicious access can be avoided.

Description

technical field [0001] The invention relates to computer technology, in particular to an access control method for realizing access to a safe operating system from a multimedia operating system in a mobile terminal and a mobile terminal for realizing the access control method. Background technique [0002] With the increasingly wide application of computers and networks and the increasing variety of businesses in different fields, equipment used for security information interaction (that is, information interaction with high security requirements, such as transaction processing in the financial field) (especially It is a security information interaction device based on mobile terminals) is becoming more and more important. [0003] In traditional technical solutions, in order to improve the security of information exchange devices, the concept of Trusted Execution Environment (Trusted Execution Environment, TEE) has been proposed. Due to the emergence of TEE, more and mor...

AI Technical Summary

Problems solved by technology

[0006] When an Android application uses this mechanism to continuously maliciously access the TEE trusted application, since each selection needs to be determined by the TEE to determine whether the access is valid, the terminal must be continuously switched to the TEE for execution, causing the terminal to run on the Android Switching back and forth between TEE and TEE is likely to cause system jitter and cause the Android system to be unresponsive

At the same time, when the TEE application is initiated and maliciously selected to access, it is easy to make the TEE trusted application always in the state of user permission judgment, and cannot respond to the normal access request of the legitimate application.

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