README.md
1# itrustee\_ree\_lite<a name="EN-US_TOPIC_0000001078530726"></a>
2
3- [Introduction](#section469617221261)
4- [Architecture](#section15884114210197)
5- [Directory Structure](#section1464106163817)
6
7## Introduction<a name="section469617221261"></a>
8
9The 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.
10
11## Architecture<a name="section15884114210197"></a>
12
13The following figure shows the itrustee\_ree\_lite architecture.
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15
16
17- 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.
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19- libteec: provides CA GP APIs for accessing device nodes and establishing communication sessions with the TEE.
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21- teecd: provides agent services for TEEOS, such as file operations.
22
23## Directory Structure<a name="section1464106163817"></a>
24
25**Table 1** Directory structure of itrustee\_ree\_lite
26
27<a name="table2977131081412"></a>
28<table><thead align="left"><tr id="row7977610131417"><th class="cellrowborder" valign="top" width="50%" id="mcps1.2.3.1.1"><p id="p18792459121314"><a name="p18792459121314"></a><a name="p18792459121314"></a>Name</p>
29</th>
30<th class="cellrowborder" valign="top" width="50%" id="mcps1.2.3.1.2"><p id="p77921459191317"><a name="p77921459191317"></a><a name="p77921459191317"></a>Description</p>
31</th>
32</tr>
33</thead>
34<tbody><tr id="row17977171010144"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p1836912441194"><a name="p1836912441194"></a><a name="p1836912441194"></a>device/hisilicon/itrustee/itrustee_ree_lite/frameworks/libteec</p>
35</td>
36<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p2549609105"><a name="p2549609105"></a><a name="p2549609105"></a>Implementation code of libteec</p>
37</td>
38</tr>
39<tr id="row6978161091412"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p64006181102"><a name="p64006181102"></a><a name="p64006181102"></a>device/hisilicon/itrustee/itrustee_ree_lite/interfaces/innerkits/libteec</p>
40</td>
41<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p7456843192018"><a name="p7456843192018"></a><a name="p7456843192018"></a>APIs of libteec</p>
42</td>
43</tr>
44<tr id="row6978201031415"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p1978910485104"><a name="p1978910485104"></a><a name="p1978910485104"></a>device/hisilicon/itrustee/itrustee_ree_lite/services/teecd</p>
45</td>
46<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p1059035912204"><a name="p1059035912204"></a><a name="p1059035912204"></a>Implementation code of teecd</p>
47</td>
48</tr>
49<tr id="row1897841071415"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p182586363119"><a name="p182586363119"></a><a name="p182586363119"></a>drivers/liteos/tzdriver/</p>
50</td>
51<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p19278126102113"><a name="p19278126102113"></a><a name="p19278126102113"></a>Implementation code of tzdriver</p>
52</td>
53</tr>
54</tbody>
55</table>
56
57
README_zh.md
1# 模块介绍<a name="ZH-CN_TOPIC_0000001078530726"></a>
2
3- [简介](#section469617221261)
4- [架构](#section15884114210197)
5- [目录](#section1464106163817)
6
7## 简介<a name="section469617221261"></a>
8
9itrustee\_ree\_lite组件提供了一套用于和华为自研TEEOS交互的富运行环境（REE）接口组件，包括驱动（tzdriver）、libteec（应用接口库）、teecd（agent服务），其中libteec满足Globalplatform 标准，可提供CA（ClientApp）标准的访问接口。
10
11## 架构<a name="section15884114210197"></a>
12
13itrustee\_ree\_lite组件结构：
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15
16
17- tzdriver：驱动用于ree/tee切换、通讯，提供应用层访问的设备节点。
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19- libteec: 提供CA标准GP接口，用于访问设备节点、建立与TEE的通讯会话。
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21- teecd：提供agent（代理服务），帮助TEEOS实现文件操作等代理服务。
22
23## 目录<a name="section1464106163817"></a>
24
25**表 1** itrustee\_ree\_lite源代码目录结构
26
27<a name="table2977131081412"></a>
28<table><thead align="left"><tr id="row7977610131417"><th class="cellrowborder" valign="top" width="50%" id="mcps1.2.3.1.1"><p id="p18792459121314"><a name="p18792459121314"></a><a name="p18792459121314"></a>名称</p>
29</th>
30<th class="cellrowborder" valign="top" width="50%" id="mcps1.2.3.1.2"><p id="p77921459191317"><a name="p77921459191317"></a><a name="p77921459191317"></a>描述</p>
31</th>
32</tr>
33</thead>
34<tbody><tr id="row17977171010144"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p1836912441194"><a name="p1836912441194"></a><a name="p1836912441194"></a>device/hisilicon/itrustee/itrustee_ree_lite/frameworks/libteec</p>
35</td>
36<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p2549609105"><a name="p2549609105"></a><a name="p2549609105"></a>libteec组件的实现代码</p>
37</td>
38</tr>
39<tr id="row6978161091412"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p64006181102"><a name="p64006181102"></a><a name="p64006181102"></a>device/hisilicon/itrustee/itrustee_ree_lite/interfaces/innerkits/libteec</p>
40</td>
41<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p7456843192018"><a name="p7456843192018"></a><a name="p7456843192018"></a>libteec组件的接口定义</p>
42</td>
43</tr>
44<tr id="row6978201031415"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p1978910485104"><a name="p1978910485104"></a><a name="p1978910485104"></a>device/hisilicon/itrustee/itrustee_ree_lite/services/teecd</p>
45</td>
46<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p1059035912204"><a name="p1059035912204"></a><a name="p1059035912204"></a>teecd组件的实现代码</p>
47</td>
48</tr>
49<tr id="row1897841071415"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p182586363119"><a name="p182586363119"></a><a name="p182586363119"></a>drivers/liteos/tzdriver/</p>
50</td>
51<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p19278126102113"><a name="p19278126102113"></a><a name="p19278126102113"></a>tzdriver驱动的实现代码</p>
52</td>
53</tr>
54</tbody>
55</table>
56
57
