update docs

Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>

en/application-dev/security/huks-guidelines.md

@@ -2,19 +2,19 @@
 
 ## When to Use
 
- Openharmony Universal KeyStore (HUKS) provides KeyStore (KS) capabilities for applications, including key management and key cryptography operations. HUKS also provides APIs for applications to import or generate keys.
+ OpenHarmony Universal KeyStore (HUKS) provides KeyStore (KS) capabilities for applications, including key management and key cryptography operations. HUKS also provides APIs for applications to import or generate keys.
 
 
 ## Available APIs
 
 | API                                                      | Description            |
 | ------------------------------------------------------------ | ---------------- |
-| function generateKey(keyAlias: string, options: HuksOptions, callback: AsyncCallback<HuksResult>) : void; | Generates a private key. This method uses an asynchronous callback to return the result.        |
-| function generateKey(keyAlias: string, options: HuksOptions) : Promise<HuksResult>; | Generates a private key. This method uses a promise to return the result.        |
+| function generateKey(keyAlias: string, options: HuksOptions, callback: AsyncCallback<HuksResult>) : void; | Generates a key. This method uses an asynchronous callback to return the result.        |
+| function generateKey(keyAlias: string, options: HuksOptions) : Promise<HuksResult>; | Generates a key. This method uses a promise to return the result.        |
 | function exportKey(keyAlias: string, options: HuksOptions, callback: AsyncCallback<HuksResult>) : void; | Exports the public key. This method uses an asynchronous callback to return the result.        |
 | function exportKey(keyAlias: string, options: HuksOptions) : Promise<HuksResult>; | Exports the public key. This method uses a promise to return the result.        |
-| function isKeyExist(keyAlias: string, options: HuksOptions, callback: AsyncCallback<boolean>) : void; | Check whether a key exists. This method uses an asynchronous callback to return the result.|
-| function isKeyExist(keyAlias: string, options: HuksOptions) : Promise<boolean>; | Check whether a key exists. This method uses a promise to return the result.|
+| function isKeyExist(keyAlias: string, options: HuksOptions, callback: AsyncCallback<boolean>) : void; | Checks whether a key exists. This method uses an asynchronous callback to return the result. |
+| function isKeyExist(keyAlias: string, options: HuksOptions) : Promise<boolean>; | Checks whether a key exists. This method uses a promise to return the result. |
 | function deleteKey(keyAlias: string, options: HuksOptions, callback: AsyncCallback<HuksResult>) : void; | Deletes a key. This method uses an asynchronous callback to return the result.        |
 | function deleteKey(keyAlias: string, options: HuksOptions) : Promise<HuksResult>; | Deletes a key. This method uses a promise to return the result.        |
 
@@ -26,7 +26,7 @@
    import huks from '@ohos.security.huks'
    ```
 
-2. Call **generateKey()** to generate a private key.
+2. Call **generateKey()** to generate a key.
 
    **keyAlias** indicates the alias of the key generated. **options** indicates the parameters used for generating the key. Set **options** based on the actual situation.
 
@@ -59,7 +59,7 @@
 
 3. Call **Init()** to initialize the key.
 
-   **Alias** indicates the alias of the key to initialize, and **options** indicates the parameters used for initializing the key.
+   **Alias** indicates the alias of the key to initialize, and **options** indicates the parameters used for initializing the key. Set **options** based on the actual situation.
 
    The value returned indicates whether the **Init** operation is successful.
 
@@ -92,7 +92,7 @@
    
 4. Call **update()** to update the key.
 
-   **handle** indicates the session ID for updating the key. **options** indicates the parameters used for updating the key.
+   **handle** indicates the session ID for updating the key. **options** indicates the parameters used for updating the key. Set **options** based on the actual situation.
 
    The value returned indicates whether the **Update** operation is successful.
 
@@ -118,7 +118,7 @@
    
 5. Call **finish()** to complete the operation.
 
-   **handle** indicates the session ID of the **Finish** operation. **options** indicates the parameters used for this operation.
+   **handle** indicates the session ID of the **Finish** operation. **options** indicates the parameters used for this operation. Set **options** based on the actual situation.
 
    The value returned indicates whether the **Finish** operation is successful.