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 Summary

Constructors
Modifier	Constructor	Description
`protected`	`TrustManagerFactory(TrustManagerFactorySpi factorySpi, Provider provider, String algorithm)`	Creates a TrustManagerFactory object.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`String`	`getAlgorithm()`	Returns the algorithm name of this `TrustManagerFactory` object.
`static String`	`getDefaultAlgorithm()`	Obtains the default TrustManagerFactory algorithm name.
`static TrustManagerFactory`	`getInstance(String algorithm)`	Returns a `TrustManagerFactory` object that acts as a factory for trust managers.
`static TrustManagerFactory`	`getInstance(String algorithm, String provider)`	Returns a `TrustManagerFactory` object that acts as a factory for trust managers.
`static TrustManagerFactory`	`getInstance(String algorithm, Provider provider)`	Returns a `TrustManagerFactory` object that acts as a factory for trust managers.
`Provider`	`getProvider()`	Returns the provider of this `TrustManagerFactory` object.
`TrustManager[]`	`getTrustManagers()`	Returns one trust manager for each type of trust material.
`void`	`init(KeyStore ks)`	Initializes this factory with a source of certificate authorities and related trust material.
`void`	`init(ManagerFactoryParameters spec)`	Initializes this factory with a source of provider-specific trust material.

Methods declared in class java.lang.Object

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

Constructor Detail

TrustManagerFactory

protected TrustManagerFactory(TrustManagerFactorySpi factorySpi,
                              Provider provider,
                              String algorithm)

Creates a TrustManagerFactory object.

Parameters:: factorySpi - the delegate; provider - the provider; algorithm - the algorithm

Method Detail

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 Java Security Standard Algorithm Names document 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 Java Security Standard Algorithm Names document 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 Java Security Standard Algorithm Names document 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.