1# Querying Key Aliases
2
3
4This topic walks you through on how to query key aliases.
5>**NOTE**<br>
6> The mini-system devices do not support query of key aliases.
7
8
9## How to Develop
10
111. Initialize the key property set.
12
13   Set the tag for querying the key aliases. The tag can only be [HUKS_TAG_AUTH_STORAGE_LEVEL](../../reference/apis-universal-keystore-kit/_huks_type_api.md#oh_huks_authstoragelevel).
14
152. Use [listAliases](../../reference/apis-universal-keystore-kit/js-apis-huks.md#hukslistaliases12) to query the key aliases.
16
17```ts
18/*
19 * The following example uses promise-based APIs to query key aliases.
20 */
21import { huks } from '@kit.UniversalKeystoreKit'
22
23async function testListAliases() {
24  /* 1. Initialize the key property set. */
25  let queryProperties: Array<huks.HuksParam> = [
26    {
27      tag: huks.HuksTag.HUKS_TAG_AUTH_STORAGE_LEVEL,
28      value: huks.HuksAuthStorageLevel.HUKS_AUTH_STORAGE_LEVEL_DE
29    }
30  ];
31  let queryOptions: huks.HuksOptions = {
32    properties: queryProperties
33  };
34
35  try {
36    /* 2. Query key aliases. */
37    let result: huks.HuksListAliasesReturnResult = await huks.listAliases(queryOptions);
38    console.info(`promise: listAliases success`);
39  } catch (error) {
40    console.error(`promise: listAliases fail`);
41  }
42}
43```
44