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README.md

itrustee_ree_lite

Introduction

The itrustee_ree_lite module provides a set of rich execution environment REE API components for interacting with iTrustee-developed TEEOS, including tzdriver driver, libteec API library, and teecd agent service. libteec meets the GlobalPlatform GP standards and provides ClientApp CA APIs.

Architecture

The following figure shows the itrustee_ree_lite architecture.

  • tzdriver: enables switching and communication between the REE and trusted execution environment TEE and provides device nodes that can be accessed from the application layer.

  • libteec: provides CA GP APIs for accessing device nodes and establishing communication sessions with the TEE.

  • teecd: provides agent services for TEEOS, such as file operations.

Directory Structure

Table 1 Directory structure of itrustee_ree_lite

Name

Description

device/hisilicon/itrustee/itrustee_ree_lite/frameworks/libteec

Implementation code of libteec

device/hisilicon/itrustee/itrustee_ree_lite/interfaces/innerkits/libteec

APIs of libteec

device/hisilicon/itrustee/itrustee_ree_lite/services/teecd

Implementation code of teecd

drivers/liteos/tzdriver/

Implementation code of tzdriver