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:

Constructor Summary

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

Method Summary

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

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:

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:

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:

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.

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