AuthHandoffLauncher

```
public class AuthHandoffLauncher

                    
```
Secure Intent Handoff Launcher for Interactive Single Sign-On (AuthHandoffLauncher).
Implements:
- Strict explicit intent targeting (com.tzsmm.tzinbox).
- Anti-replay request nonce generation and validation on result return.
- Pre-flight verification that the target vault app is installed and signed by trusted certificate.

Field Summary

Fields
Modifier and Type	Field	Description
`private final String`	`VAULT_PACKAGE_NAME`
`private final String`	`VAULT_AUTH_ACTIVITY`
`private final Integer`	`REQUEST_CODE_TZ_AUTH`
`public final static AuthHandoffLauncher`	`INSTANCE`

Method Summary

Modifier and Type	Method	Description
`final Boolean`	`isVaultAvailable(Context context)`	Checks if the master Identity Vault is installed and trusted on this device.
`final Boolean`	`launchAuthHandoff(Activity activity, String appDisplayName)`	Launches the explicit `TzAuthActivity` in `tzinbox`.
`final MeshAccount`	`handleActivityResult(Integer requestCode, Integer resultCode, Intent data)`	Validates and parses the result returned from `TzAuthActivity`.
`final String`	`getVAULT_PACKAGE_NAME()`
`final String`	`getVAULT_AUTH_ACTIVITY()`
`final Integer`	`getREQUEST_CODE_TZ_AUTH()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - isVaultAvailable
```
 final Boolean isVaultAvailable(Context context)
```
    Checks if the master Identity Vault is installed and trusted on this device.
  - launchAuthHandoff
```
 final Boolean launchAuthHandoff(Activity activity, String appDisplayName)
```
    Launches the explicit TzAuthActivity in tzinbox.
    
    Parameters:
    
    activity - The calling activity.
    
    appDisplayName - Human-readable name of the calling app (e.g.
  - handleActivityResult
```
 final MeshAccount handleActivityResult(Integer requestCode, Integer resultCode, Intent data)
```
    Validates and parses the result returned from TzAuthActivity.
    
    Parameters:
    
    requestCode - The request code from onActivityResult.
    
    resultCode - The result code (RESULT_OK, RESULT_CANCELED).
    
    data - The intent returned.
  - getVAULT_PACKAGE_NAME
```
 final String getVAULT_PACKAGE_NAME()
```
  - getVAULT_AUTH_ACTIVITY
```
 final String getVAULT_AUTH_ACTIVITY()
```
  - getREQUEST_CODE_TZ_AUTH
```
 final Integer getREQUEST_CODE_TZ_AUTH()
```