Provides access to a few facilities of the Android security subsystems.
| KeyChainAliasCallback | The KeyChainAliasCallback is the callback for choosePrivateKeyAlias(Activity, KeyChainAliasCallback, String[], Principal[], String, int, String). |
| KeyChain | The KeyChain class provides access to private keys and
their corresponding certificate chains in credential storage. |
| KeyChainException | Thrown on problems accessing the KeyChain. |
