Harmony Universal Keystore Service

Introduction

This sample shows how @ohos.security.huks works to implement encryption and decryption of arbitrary input content. The implementation scenario is as follows:

1. Using a new key for message encryption and decryption transmission: Use the HUKS generated key interface to generate a new key locally, simulating the scenario where the device encrypts the sent message and decrypts the received message.

2. Using an old key for message encryption and decryption transmission: Import an old key using HUKS' import key interface to simulate the scenario of encrypting the sent message on the old device and decrypting the received message on the new device.

3. Click the Minimum Access Control button on the main page, enter the password to be saved in the input box of the new key interface, and click ** Save password ** Button, after entering the PIN code, the encrypted password content will be displayed in the lower text box, and then click ** Read Password ** button, and the decrypted message content will be displayed in the lower text box.

Usage

1. Click the New Key button on the main page, enter the message content to be sent in the input box of the new key interface, and click Send Message button, the encrypted message content will be displayed in the text box below, and then click the Receive Message button. The decrypted message content will be displayed in the text box below.
2. Click the Back button in the upper left corner to return to the main interface.
3. Click on the Old Key button on the main page, enter the message content to be sent in the input box of the old key interface, and click Send Message button, the encrypted message content will be displayed in the text box below. First, click the Import Key button, and a pop-up window will prompt that the key was successfully imported. Then, click the Receive Message button, and the decrypted message content will be displayed in the text box below.
4. Click the Minimum Access Control button on the main page, enter the message content to be sent in the input box of the new key interface, and click Save Password button, the encrypted password content will be displayed in the text box below, and then click the Read Password button. After entering the PIN code(lock screen password, need to be recorded in advance), the decrypted password content will be displayed in the text box below.

Constraints

1. This sample can only be run on standard-system devices.

2. This sample has been adapted to the API version 10 SDK (4.0.10.11).

3. This sample requires DevEco Studio 3.1.1 Release (Build Version: 3.1.0.501) to compile and run.

4. If this example is run on a device without a device certificate, you need to run the 'hdc shell setenforce 0' command on the local command line to ensure that the example function can run properly.