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package org.netbeans.spi.keyring;
/**
* Provider for a keyring.
* Should be registered in global lookup.
* Providers will be searched in the order in which they are encountered
* until one which is {@link #enabled} is found.
* There is a default platform-independent implementation at position 1000
* which should always be enabled.
* <p>All SPI calls are made from one thread at a time, so providers need not be synchronized.
*/
public interface KeyringProvider {
/**
* Check whether this provider can be used in the current JVM session.
* If integrating a native keyring, this should attempt to load related
* libraries and check whether they can be found.
* This method will be called at most once per JVM session,
* prior to any other methods in this interface being called.
* @return true if this provider should be used, false if not
*/
boolean enabled();
/**
* Read a key from the ring.
* @param key the identifier of the key
* @return its value if found (elements may be later nulled out), else null if not present
*/
char[] read(String key);
/**
* Save a key to the ring.
* If it could not be saved, do nothing.
* If the key already existed, overwrite the password.
* @param key a key identifier
* @param password the password or other sensitive information associated with the key
* (elements will be later nulled out)
* @param description a user-visible description of the key (may be null)
*/
void save(String key, char[] password, String description);
/**
* Delete a key from the ring.
* If the key was not in the ring to begin with, do nothing.
* @param key a key identifier
*/
void delete(String key);
}