Module java.base
Package javax.net.ssl

Class TrustManagerFactory

java.lang.Object
javax.net.ssl.TrustManagerFactory

public class TrustManagerFactory
extends Object
This class acts as a factory for trust managers based on a source of trust material. Each trust manager manages a specific type of trust material for use by secure sockets. The trust material is based on a KeyStore and/or provider-specific sources.

Every implementation of the Java platform is required to support the following standard TrustManagerFactory algorithm:

  • PKIX
This algorithm is described in the TrustManagerFactory section of the Java Security Standard Algorithm Names Specification. Consult the release documentation for your implementation to see if any other algorithms are supported.

Since:
1.4
See Also:
TrustManager
  • Constructor Details

    • TrustManagerFactory

      protected TrustManagerFactory​(TrustManagerFactorySpi factorySpi, Provider provider, String algorithm)
      Creates a TrustManagerFactory object.
      Parameters:
      factorySpi - the delegate
      provider - the provider
      algorithm - the algorithm
  • Method Details

    • getDefaultAlgorithm

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

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

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

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

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

      Returns:
      the algorithm name of this TrustManagerFactory object
    • getInstance

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

      This method traverses the list of registered security Providers, starting with the most preferred Provider. A new TrustManagerFactory object encapsulating the TrustManagerFactorySpi 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 than the order of providers returned by Security.getProviders().
      Parameters:
      algorithm - the standard name of the requested trust management algorithm. See the TrustManagerFactory section in the Java Security Standard Algorithm Names Specification for information about standard algorithm names.
      Returns:
      the new TrustManagerFactory object
      Throws:
      NoSuchAlgorithmException - if no Provider supports a TrustManagerFactorySpi implementation for the specified algorithm
      NullPointerException - if algorithm is null
      See Also:
      Provider
    • getInstance

      public static final TrustManagerFactory getInstance​(String algorithm, String provider) throws NoSuchAlgorithmException, NoSuchProviderException
      Returns a TrustManagerFactory object that acts as a factory for trust 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 trust management algorithm. See the TrustManagerFactory section in the Java Security Standard Algorithm Names Specification for information about standard algorithm names.
      provider - the name of the provider.
      Returns:
      the new TrustManagerFactory object
      Throws:
      IllegalArgumentException - if the provider name is null or empty
      NoSuchAlgorithmException - if a TrustManagerFactorySpi 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:
      Provider
    • getInstance

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

      A new TrustManagerFactory object encapsulating the TrustManagerFactorySpi 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 trust management algorithm. See the TrustManagerFactory section in the Java Security Standard Algorithm Names Specification for information about standard algorithm names.
      provider - an instance of the provider.
      Returns:
      the new TrustManagerFactory object
      Throws:
      IllegalArgumentException - if the provider is null
      NoSuchAlgorithmException - if a TrustManagerFactorySpi implementation for the specified algorithm is not available from the specified Provider object
      NullPointerException - if algorithm is null
      See Also:
      Provider
    • getProvider

      public final Provider getProvider()
      Returns the provider of this TrustManagerFactory object.
      Returns:
      the provider of this TrustManagerFactory object
    • init

      public final void init​(KeyStore ks) throws KeyStoreException
      Initializes this factory with a source of certificate authorities and related trust material.

      The provider typically uses a KeyStore as a basis for making trust decisions.

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

      Parameters:
      ks - the key store, or null
      Throws:
      KeyStoreException - if this operation fails
    • init

      public final void init​(ManagerFactoryParameters spec) throws InvalidAlgorithmParameterException
      Initializes this factory with a source of provider-specific trust material.

      In some cases, initialization parameters other than a keystore 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
    • getTrustManagers

      public final TrustManager[] getTrustManagers()
      Returns one trust manager for each type of trust material.
      Returns:
      the trust managers
      Throws:
      IllegalStateException - if the factory is not initialized.