Module java.base
Package javax.net.ssl

Class KeyManagerFactory

java.lang.Object
javax.net.ssl.KeyManagerFactory
public class KeyManagerFactory extends Object
This class acts as a factory for key managers based on a source of key material. Each key manager manages a specific type of key material for use by secure sockets. The key material is based on a KeyStore and/or provider specific sources.
Since:
1.4
See Also:

  • Constructor Details

    • KeyManagerFactory

      protected KeyManagerFactory(KeyManagerFactorySpi factorySpi, Provider provider, String algorithm)
      Creates a KeyManagerFactory object.
      Parameters:
      factorySpi - the delegate
      provider - the provider
      algorithm - the algorithm

  • Method Details

    • getDefaultAlgorithm

      public static final String getDefaultAlgorithm()
      Obtains the default KeyManagerFactory algorithm name.

      The default algorithm can be changed at runtime by setting the value of the ssl.KeyManagerFactory.algorithm security property to the desired algorithm name.

      Returns:
      the default algorithm name as specified by the ssl.KeyManagerFactory.algorithm security property, or an implementation-specific default if no such property exists.
      See Also:

    • getAlgorithm

      public final String getAlgorithm()
      Returns the algorithm name of this KeyManagerFactory object.

      This is the same name that was specified in one of the getInstance calls that created this KeyManagerFactory object.

      Returns:
      the algorithm name of this KeyManagerFactory object.

    • getInstance

      public static final KeyManagerFactory getInstance(String algorithm) throws NoSuchAlgorithmException
      Returns a KeyManagerFactory object that acts as a factory for key managers.

      This method traverses the list of registered security Providers, starting with the most preferred Provider. A new KeyManagerFactory object encapsulating the KeyManagerFactorySpi implementation from the first Provider that supports the specified algorithm is returned.

      Note that the list of registered providers may be retrieved via the Security.getProviders() method.

      Implementation Note:
      The JDK Reference Implementation additionally uses the jdk.security.provider.preferred Security property to determine the preferred provider order for the specified algorithm. This may be different from the order of providers returned by Security.getProviders().
      Parameters:
      algorithm - the standard name of the requested algorithm. See the KeyManagerFactory section in the Java Security Standard Algorithm Names Specification for information about standard algorithm names.
      Returns:
      the new KeyManagerFactory object
      Throws:
      NoSuchAlgorithmException - if no Provider supports a KeyManagerFactorySpi implementation for the specified algorithm
      NullPointerException - if algorithm is null
      See Also:

    • getInstance

      public static final KeyManagerFactory getInstance(String algorithm, String provider) throws NoSuchAlgorithmException, NoSuchProviderException
      Returns a KeyManagerFactory object that acts as a factory for key managers.

      A new KeyManagerFactory object encapsulating the KeyManagerFactorySpi implementation from the specified provider is returned. The specified provider must be registered in the security provider list.

      Note that the list of registered providers may be retrieved via the Security.getProviders() method.

      Parameters:
      algorithm - the standard name of the requested algorithm. See the KeyManagerFactory section in the Java Security Standard Algorithm Names Specification for information about standard algorithm names.
      provider - the name of the provider.
      Returns:
      the new KeyManagerFactory object
      Throws:
      IllegalArgumentException - if the provider name is null or empty
      NoSuchAlgorithmException - if a KeyManagerFactorySpi implementation for the specified algorithm is not available from the specified provider
      NoSuchProviderException - if the specified provider is not registered in the security provider list
      NullPointerException - if algorithm is null
      See Also:

    • getInstance

      public static final KeyManagerFactory getInstance(String algorithm, Provider provider) throws NoSuchAlgorithmException
      Returns a KeyManagerFactory object that acts as a factory for key managers.

      A new KeyManagerFactory object encapsulating the KeyManagerFactorySpi implementation from the specified Provider object is returned. Note that the specified Provider object does not have to be registered in the provider list.

      Parameters:
      algorithm - the standard name of the requested algorithm. See the KeyManagerFactory section in the Java Security Standard Algorithm Names Specification for information about standard algorithm names.
      provider - an instance of the provider.
      Returns:
      the new KeyManagerFactory object
      Throws:
      IllegalArgumentException - if provider is null
      NoSuchAlgorithmException - if a @KeyManagerFactorySpi implementation for the specified algorithm is not available from the specified Provider object
      NullPointerException - if algorithm is null
      See Also:

    • getProvider

      public final Provider getProvider()
      Returns the provider of this KeyManagerFactory object.
      Returns:
      the provider of this KeyManagerFactory object

    • init

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

      The provider typically uses a KeyStore for obtaining key material for use during secure socket negotiations. The KeyStore is generally password-protected.

      For more flexible initialization, please see init(ManagerFactoryParameters).

      Parameters:
      ks - the key store or null
      password - the password for recovering keys in the KeyStore
      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 (e.g. the given password is wrong).

    • init

      public final void init(ManagerFactoryParameters spec) throws InvalidAlgorithmParameterException
      Initializes this factory with a source of provider-specific 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 an error is encountered

    • getKeyManagers

      public final KeyManager[] getKeyManagers()
      Returns one key manager for each type of key material.
      Returns:
      the key managers
      Throws:
      IllegalStateException - if the KeyManagerFactory is not initialized