公开(公告)号：US20240419609A1

公开(公告)日：2024-12-19

申请号：US18814232

申请日：2024-08-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei Zhang ,  Guohua Shen ,  Shu Shen

IPC: G06F12/14 ,  G06F13/28

Abstract: A data processing method, a direct memory access (DMA) engine, and a computing device are provided. The data processing method includes: a DMA engine of a first computing device obtains encrypted data that is to be processed in a rich execution environment (REE) of the first computing device, wherein the first computing device includes the REE running a general operating system and a trusted execution environment (TEE) running a trusted operating system; migrates the encrypted data to the TEE; and performs a decryption operation on the encrypted data in a process of migrating the encrypted data to the TEE, to obtain decrypted data. According to the application, the DMA engine performs hardware offloading on a decryption function of a CPU.