US 2019/0318087 A1 · TEE ACCESS CONTROL METHOD AND MOBILE TERMINAL IMPLEMENTING SAME

Abstract

The present invention relates to a method for access control of a multimedia system to a secure operating system and a mobile terminal for implementing the method. The method includes the steps of: initiating an application access request for selecting a trusted application from a client application of a multimedia system to a secure operating system; making a decision as to whether the client application is a malicious application, and if not, proceeding to a next step, if yes, returning Selection Failure to the client application and performing an interrupt handling; sending the application access request from the multimedia system to the secure system; and acquiring, at the secure operating system, the trusted application based on the application access request and returning the trusted application to the multimedia system. The malicious accesses initiated by a malicious application to a trusted application in a securing operating system can be prevented without switching between systems, and the problem that a trusted application cannot be accessed due to malicious access can be avoided.

Claims11

Dependent claims

A method for access control of a multimedia system to a secure system, comprising:

a secure service request step for initiating an application access request for selecting a trusted application from a client application of a multimedia system to a secure operating system;
an access right decision step for making a decision as to whether the client application that initiates an invocation is a malicious application, and if not, proceeding to an application request sending step, and if yes, returning Selection Failure to the client application and performing an interrupt handling;
the application request sending step for sending the application access request from the multimedia system to the secure operating system;
and
an application acquiring step for acquiring a trusted application and returning the trusted application to the multimedia system based on the application access request at the secure operating system, .

2 more elements

A mobile terminal for implementing access control of a multimedia system to a secure operating system, the mobile terminal comprising a multimedia system and a secure operating system, wherein the multimedia system comprises:

a client application for initiating an application access request for selecting a trusted application to a secure operating system;
an interaction module for providing the client application with an application access interface for accessing the secure operating system;
a control access module for making a decision as to whether the client application that is currently accessing is a malicious application, and listening for a processing result of selecting the trusted application by the client application, and making a decision as to whether the access initiated by the client application is a malicious access based on prescribed rules;
and
a first communication module for implementing data transmission between the multimedia system and the secure operating system, the secure operating system includes:
one or more trusted applications;
a command distributing module for distributing an application access request from a multimedia operating system to a respective trusted application;
a user access right management module, invoked by the trusted application, for making a decision as to the validity of the application access request;
and
a second communication module for implementing data transmission between the secure operating system and the multimedia system.

7 more elements

Dependencies are inferred from the claim text.

Tee access control method and mobile terminal implementing same

Life of this patent

Tee access control method and mobile terminal implementing same

Life of this patent

Abstract

Claims11