Java compact1, compact2, compact3 java.security Class KeyStore.Builder（JDK8）

Constructor Detail

• Builder

  protected Builder()

  Construct a new Builder.

Method Detail

• getKeyStore

  public abstract KeyStore getKeyStore()
                                throws KeyStoreException

  Returns the KeyStore described by this object.

  Returns:

  the KeyStore described by this object

  Throws:

  KeyStoreException - if an error occurred during the operation, for example if the KeyStore could not be instantiated or loaded

• getProtectionParameter

  public abstract KeyStore.ProtectionParameter getProtectionParameter(String alias)
                                                               throws KeyStoreException

  Returns the ProtectionParameters that should be used to obtain the Entry with the given alias. The getKeyStore method must be invoked before this method may be called.

  Parameters:

  alias - the alias of the KeyStore entry

  Returns:

  the ProtectionParameters that should be used to obtain the Entry with the given alias.

  Throws:

  NullPointerException - if alias is null

  KeyStoreException - if an error occurred during the operation

  IllegalStateException - if the getKeyStore method has not been invoked prior to calling this method

• newInstance

  public static KeyStore.Builder newInstance(KeyStore keyStore,
                                             KeyStore.ProtectionParameter protectionParameter)

  Returns a new Builder that encapsulates the given KeyStore. The getKeyStore() method of the returned object will return keyStore, the getProtectionParameter() method will return protectionParameters.

  This is useful if an existing KeyStore object needs to be used with Builder-based APIs.

  Parameters:

  keyStore - the KeyStore to be encapsulated

  protectionParameter - the ProtectionParameter used to protect the KeyStore entries

  Returns:

  a new Builder object

  Throws:

  NullPointerException - if keyStore or protectionParameters is null

  IllegalArgumentException - if the keyStore has not been initialized

• newInstance

  public static KeyStore.Builder newInstance(String type,
                                             Provider provider,
                                             File file,
                                             KeyStore.ProtectionParameter protection)

  Returns a new Builder object.

  The first call to the getKeyStore() method on the returned builder will create a KeyStore of type type and call its load() method. The inputStream argument is constructed from file. If protection is a PasswordProtection, the password is obtained by calling the getPassword method. Otherwise, if protection is a CallbackHandlerProtection, the password is obtained by invoking the CallbackHandler.

  Subsequent calls to getKeyStore() return the same object as the initial call. If the initial call to failed with a KeyStoreException, subsequent calls also throw a KeyStoreException.

  The KeyStore is instantiated from provider if non-null. Otherwise, all installed providers are searched.

  Calls to getProtectionParameter() will return a PasswordProtection object encapsulating the password that was used to invoke the load method.

  Note that the getKeyStore() method is executed within the AccessControlContext of the code invoking this method.

  Parameters:

  type - the type of KeyStore to be constructed

  provider - the provider from which the KeyStore is to be instantiated (or null)

  file - the File that contains the KeyStore data

  protection - the ProtectionParameter securing the KeyStore data

  Returns:

  a new Builder object

  Throws:

  NullPointerException - if type, file or protection is null

  IllegalArgumentException - if protection is not an instance of either PasswordProtection or CallbackHandlerProtection; or if file does not exist or does not refer to a normal file

• newInstance

  public static KeyStore.Builder newInstance(String type,
                                             Provider provider,
                                             KeyStore.ProtectionParameter protection)

  Returns a new Builder object.

  Each call to the getKeyStore() method on the returned builder will return a new KeyStore object of type type. Its load() method is invoked using a LoadStoreParameter that encapsulates protection.

  The KeyStore is instantiated from provider if non-null. Otherwise, all installed providers are searched.

  Calls to getProtectionParameter() will return protection.

  Note that the getKeyStore() method is executed within the AccessControlContext of the code invoking this method.

  Parameters:

  type - the type of KeyStore to be constructed

  provider - the provider from which the KeyStore is to be instantiated (or null)

  protection - the ProtectionParameter securing the Keystore

  Returns:

  a new Builder object

  Throws:

  NullPointerException - if type or protection is null