CertPathBuilderpublic class CertPathBuilder extends Object | A class for building certification paths (also known as certificate chains).
This class uses a provider-based architecture.
To create a CertPathBuilder, call
one of the static getInstance methods, passing in the
algorithm name of the CertPathBuilder desired and optionally
the name of the provider desired.
Once a CertPathBuilder object has been created, certification
paths can be constructed by calling the {@link #build build} method and
passing it an algorithm-specific set of parameters. If successful, the
result (including the CertPath that was built) is returned
in an object that implements the CertPathBuilderResult
interface.
Concurrent Access
The static methods of this class are guaranteed to be thread-safe.
Multiple threads may concurrently invoke the static methods defined in
this class with no ill effects.
However, this is not true for the non-static methods defined by this class.
Unless otherwise documented by a specific provider, threads that need to
access a single CertPathBuilder instance concurrently should
synchronize amongst themselves and provide the necessary locking. Multiple
threads each manipulating a different CertPathBuilder instance
need not synchronize. |
| Fields Summary |
|---|
| private static final String | CPB_TYPE | | private static final Debug | debug | | private CertPathBuilderSpi | builderSpi | | private Provider | provider | | private String | algorithm |
| Constructors Summary |
|---|
protected CertPathBuilder(CertPathBuilderSpi builderSpi, Provider provider, String algorithm)Creates a CertPathBuilder object of the given algorithm,
and encapsulates the given provider implementation (SPI object) in it.
this.builderSpi = builderSpi;
this.provider = provider;
this.algorithm = algorithm;
|
| Methods Summary |
|---|
| public final java.security.cert.CertPathBuilderResult | build(java.security.cert.CertPathParameters params)Attempts to build a certification path using the specified algorithm
parameter set.
return builderSpi.engineBuild(params);
| | public final java.lang.String | getAlgorithm()Returns the name of the algorithm of this CertPathBuilder.
return this.algorithm;
| | public static final java.lang.String | getDefaultType()Returns the default CertPathBuilder type as specified in
the Java security properties file, or the string "PKIX"
if no such property exists. The Java security properties file is
located in the file named <JAVA_HOME>/lib/security/java.security.
<JAVA_HOME> refers to the value of the java.home system property,
and specifies the directory where the JRE is installed.
The default CertPathBuilder type can be used by
applications that do not want to use a hard-coded type when calling one
of the getInstance methods, and want to provide a default
type in case a user does not specify its own.
The default CertPathBuilder type can be changed by
setting the value of the "certpathbuilder.type" security property
(in the Java security properties file) to the desired type.
String cpbtype;
cpbtype = (String)AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
return Security.getProperty(CPB_TYPE);
}
});
if (cpbtype == null) {
cpbtype = "PKIX";
}
return cpbtype;
| | public static java.security.cert.CertPathBuilder | getInstance(java.lang.String algorithm)Returns a CertPathBuilder object that implements the
specified algorithm.
This method traverses the list of registered security Providers,
starting with the most preferred Provider.
A new CertPathBuilder object encapsulating the
CertPathBuilderSpi implementation from the first
Provider that supports the specified algorithm is returned.
Note that the list of registered providers may be retrieved via
the {@link Security#getProviders() Security.getProviders()} method.
Instance instance = GetInstance.getInstance("CertPathBuilder",
CertPathBuilderSpi.class, algorithm);
return new CertPathBuilder((CertPathBuilderSpi)instance.impl,
instance.provider, algorithm);
| | public static java.security.cert.CertPathBuilder | getInstance(java.lang.String algorithm, java.lang.String provider)Returns a CertPathBuilder object that implements the
specified algorithm.
A new CertPathBuilder object encapsulating the
CertPathBuilderSpi 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 {@link Security#getProviders() Security.getProviders()} method.
Instance instance = GetInstance.getInstance("CertPathBuilder",
CertPathBuilderSpi.class, algorithm, provider);
return new CertPathBuilder((CertPathBuilderSpi)instance.impl,
instance.provider, algorithm);
| | public static java.security.cert.CertPathBuilder | getInstance(java.lang.String algorithm, java.security.Provider provider)Returns a CertPathBuilder object that implements the
specified algorithm.
A new CertPathBuilder object encapsulating the
CertPathBuilderSpi implementation from the specified Provider
object is returned. Note that the specified Provider object
does not have to be registered in the provider list.
Instance instance = GetInstance.getInstance("CertPathBuilder",
CertPathBuilderSpi.class, algorithm, provider);
return new CertPathBuilder((CertPathBuilderSpi)instance.impl,
instance.provider, algorithm);
| | public final java.security.Provider | getProvider()Returns the provider of this CertPathBuilder.
return this.provider;
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