# Class KeyManagerFactorySpi

java.lang.Object
javax.net.ssl.KeyManagerFactorySpi

public abstract class KeyManagerFactorySpi extends Object
This class defines the Service Provider Interface (SPI) for the `KeyManagerFactory` class.

All the abstract methods in this class must be implemented by each cryptographic service provider who wishes to supply the implementation of a particular key manager factory.

Since:
  1.4
See Also:
  - `KeyManagerFactory`
  - `KeyManager`

## Constructor Summary

Constructors
Constructor
Description
`KeyManagerFactorySpi()`
Constructor for subclasses to call.

## Method Summary

Modifier and Type
Method
Description
`protected abstract KeyManager[]`
`engineGetKeyManagers()`
Returns one key manager for each type of key material.
`protected abstract void`
`engineInit(KeyStore ks, char[] password)`
Initializes this factory with a source of key material.
`protected abstract void`
`engineInit(ManagerFactoryParameters spec)`
Initializes this factory with a source of key material.

### Methods declared in class Object

`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

## Constructor Details

### KeyManagerFactorySpi

public KeyManagerFactorySpi()
Constructor for subclasses to call.

## Method Details

### engineInit

protected abstract void engineInit(KeyStore ks, char[] password) throws KeyStoreException, NoSuchAlgorithmException, UnrecoverableKeyException
Initializes this factory with a source of key material.

Parameters:
  `ks` - the key store or null
  `password` - the password for recovering keys
Throws:
  `KeyStoreException` - if this operation fails
  `NoSuchAlgorithmException` - if the specified algorithm is not available from the specified provider.
  `UnrecoverableKeyException` - if the key cannot be recovered
See Also:
  - `KeyManagerFactory.init(KeyStore, char[])`

### engineInit

protected abstract void engineInit(ManagerFactoryParameters spec) throws InvalidAlgorithmParameterException
Initializes this factory with a source of key material.

In some cases, initialization parameters other than a keystore and password may be needed by a provider. Users of that particular provider are expected to pass an implementation of the appropriate `ManagerFactoryParameters` as defined by the provider. The provider can then call the specified methods in the ManagerFactoryParameters implementation to obtain the needed information.

Parameters:
  `spec` - an implementation of a provider-specific parameter specification
Throws:
  `InvalidAlgorithmParameterException` - if there is problem with the parameters
See Also:
  - `KeyManagerFactory.init(ManagerFactoryParameters spec)`

### engineGetKeyManagers

protected abstract KeyManager[] engineGetKeyManagers()
Returns one key manager for each type of key material.

Returns:
  the key managers
Throws:
  `IllegalStateException` - if the KeyManagerFactorySpi is not initialized