Nested Classes
Modifier and Type	Class	Description
`public enum`	`MasterKey.KeyScheme`	Algorithm/Cipher choices used for the master key.
`public final class`	`MasterKey.Builder`	Builder for generating a MasterKey.

Fields
Modifier and Type	Field	Description
`public final static String`	`DEFAULT_MASTER_KEY_ALIAS`
`public final static int`	`DEFAULT_AES_GCM_MASTER_KEY_SIZE`

Modifier and Type	Method	Description
`static int`	`getDefaultAuthenticationValidityDurationSeconds()`	The default validity period for authentication in seconds.
`boolean`	`isKeyStoreBacked()`	Checks if this key is backed by the Android Keystore.
`boolean`	`isUserAuthenticationRequired()`	Gets whether user authentication is required to use this key.
`int`	`getUserAuthenticationValidityDurationSeconds()`	Gets the duration in seconds that the key is unlocked for following user authentication.
`boolean`	`isStrongBoxBacked()`	Gets whether the key is backed by strong box.
`String`	`toString()`

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

Class MasterKey