Transaction security processing method and apparatus, and terminal device for using a trusted application in association with an audio file

A terminal device, comprising:

• a processor;
• and
• a memory configured to store computer readable instructions that, when executed by the processor, cause the processor to:
• receive, in a rich execution environment (REE), a screen jump instruction triggered by a user on a first screen, wherein the screen jump instruction is used for jumping to a second screen, and the second screen is configured for display in a trusted execution environment(TEE);
• enter the TEE and load a trusted application (TA) in the TEE;
• obtain a first audio file from storage space on an REE side and play the first audio file by using the TA, wherein the first audio file is pre-stored by the user and represents that the terminal device is currently running in a trusted environment;
• and
• display the second screen generated by using the TA.

A non-transitory storage medium having computer readable instructions that, when executed by one or more processors, cause the one or more processors to provide execution comprising:

• receiving, in a rich execution environment (REE), a screen jump instruction triggered by a user on a first screen, wherein the screen jump instruction is used for jumping to a second screen, and the second screen is configured for display in a trusted execution environment(TEE);
• and
• entering the TEE and loading a trusted application (TA) in the TEE;
• obtaining a first audio file from storage space on an REE side and playing the first audio file by using the TA, wherein the first audio file is pre-stored by the user and represents that the terminal device is currently running in a trusted environment;
• and
• displaying the second screen generated by using the TA.