/**
* Returns the key associated with the given alias, using the given password to recover it.
*
* @param alias the alias name
* @param password the password for recovering the key
* @return the requested key, or null if the given alias does not exist or does not identify a
* <i>key entry</i>.
* @exception NoSuchAlgorithmException if the algorithm for recovering the key cannot be found
* @exception UnrecoverableKeyException if the key cannot be recovered (e.g., the given password
* is wrong).
*/
public Key engineGetKey(String alias, char[] password)
throws NoSuchAlgorithmException, UnrecoverableKeyException {
AbstractMap.SimpleEntry<String, Collection<KeyStore>> pair = getKeystoresForReading(alias);
Key key = null;
try {
String entryAlias = pair.getKey();
for (KeyStore keystore : pair.getValue()) {
key = keystore.getKey(entryAlias, password);
if (key != null) {
break;
}
}
} catch (KeyStoreException e) {
throw new IllegalStateException(e);
}
return key;
}
