| This provides the optional parameters that can be specified for
{@code KeyStore} entries that work with
Android KeyStore
facility. The Android KeyStore facility is accessed through a
{@link java.security.KeyStore} API using the {@code AndroidKeyStore}
provider. The {@code context} passed in may be used to pop up some UI to ask
the user to unlock or initialize the Android KeyStore facility.
Any entries placed in the {@code KeyStore} may be retrieved later. Note that
there is only one logical instance of the {@code KeyStore} per application
UID so apps using the {@code sharedUid} facility will also share a
{@code KeyStore}.
Keys may be generated using the {@link KeyPairGenerator} facility with a
{@link KeyPairGeneratorSpec} to specify the entry's {@code alias}. A
self-signed X.509 certificate will be attached to generated entries, but that
may be replaced at a later time by a certificate signed by a real Certificate
Authority. | 