1# @ohos.app.ability.contextConstant (ContextConstant) 2 3The **ContextConstant** module defines context-related enums. Currently, it defines only the enum of data encryption levels. 4 5> **NOTE** 6> 7> The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version. 8> The APIs of this module can be used only in the stage model. 9 10## Modules to Import 11 12```ts 13import contextConstant from '@ohos.app.ability.contextConstant'; 14``` 15 16## ContextConstant.AreaMode 17 18You can obtain the value of this constant by calling the **ContextConstant.AreaMode** API. 19 20**System capability**: SystemCapability.Ability.AbilityRuntime.Core 21 22| Name| Value| Description| 23| -------- | -------- | -------- | 24| EL1 | 0 | Device-level encryption area, which is accessible after the device is powered on.| 25| EL2 | 1 | User-level encryption area, which is accessible only after the device is powered on and the password is entered (for the first time).| 26