Method, apparatus, device and storage medium for data processing

An electronic device, comprising:

• at least one processor;
• and
• at least one memory, the at least one memory coupled to the at least one processor and storing instructions for execution by the at least one processor, the instructions, when executed by the at least one processor, causing the electronic device to perform operations comprising:
• initializing, in a trusted execution environment, a first program and a second program different from the first program;
• allocating a first memory space and a second memory space to the first program and the second program respectively;
• wherein the first memory space is visible to the first program and invisible to the second program, and the second memory space is visible to the second program and invisible to the first program;
• wherein the first memory space is a linear memory address space and comprises at least a first memory page;
• and
• wherein the second memory space is a linear memory address space and comprises at least a second memory page, the second memory page being different from the first memory page;
• mapping the first memory page of the first memory space to a first virtual memory page in a virtual address space of the trusted execution environment;
• and
• mapping the second memory page of the second memory space to the first virtual memory page in the virtual address space.

A non-transitory computer-readable storage medium having a computer program stored thereon, the computer program, when executed by a processor, implementing the operations comprising

• initializing, in a trusted execution environment, a first program and a second program different from the first program;
• allocating a first memory space and a second memory space to the first program and the second program respectively;
• wherein the first memory space is visible to the first program and invisible to the second program, and the second memory space is visible to the second program and invisible to the first program;
• wherein the first memory space is a linear memory address space and comprises at least a first memory page;
• and
• wherein the second memory space is a linear memory address space and comprises at least a second memory page, the second memory page being different from the first memory page;
• mapping the first memory page of the first memory space to a first virtual memory page in a virtual address space of the trusted execution environment;
• and
• mapping the second memory page of the second memory space to the first virtual memory page in the virtual address space.