public class CertPathValidator extends Object
 This class uses a provider-based architecture.
 To create a CertPathValidator,
 call one of the static getInstance methods, passing in the
 algorithm name of the CertPathValidator desired and
 optionally the name of the provider desired.
 
Once a CertPathValidator object has been created, it can
 be used to validate certification paths by calling the validate method and passing it the CertPath to be validated
 and an algorithm-specific set of parameters. If successful, the result is
 returned in an object that implements the
 CertPathValidatorResult interface.
 
The getRevocationChecker() method allows an application to specify
 additional algorithm-specific parameters and options used by the
 CertPathValidator when checking the revocation status of
 certificates. Here is an example demonstrating how it is used with the PKIX
 algorithm:
 
 CertPathValidator cpv = CertPathValidator.getInstance("PKIX");
 PKIXRevocationChecker rc = (PKIXRevocationChecker)cpv.getRevocationChecker();
 rc.setOptions(EnumSet.of(Option.SOFT_FAIL));
 params.addCertPathChecker(rc);
 CertPathValidatorResult cpvr = cpv.validate(path, params);
 
 Every implementation of the Java platform is required to support the
 following standard CertPathValidator algorithm:
 
PKIXConcurrent 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 CertPathValidator instance concurrently should
 synchronize amongst themselves and provide the necessary locking. Multiple
 threads each manipulating a different CertPathValidator
 instance need not synchronize.
CertPath| Modifier | Constructor and Description | 
|---|---|
| protected  | CertPathValidator(CertPathValidatorSpi validatorSpi,
                 Provider provider,
                 String algorithm)Creates a  CertPathValidatorobject of the given algorithm,
 and encapsulates the given provider implementation (SPI object) in it. | 
| Modifier and Type | Method and Description | 
|---|---|
| String | getAlgorithm()Returns the algorithm name of this  CertPathValidator. | 
| static String | getDefaultType()Returns the default  CertPathValidatortype as specified by
 thecertpathvalidator.typesecurity property, or the string
 "PKIX" if no such property exists. | 
| static CertPathValidator | getInstance(String algorithm)Returns a  CertPathValidatorobject that implements the
 specified algorithm. | 
| static CertPathValidator | getInstance(String algorithm,
           Provider provider)Returns a  CertPathValidatorobject that implements the
 specified algorithm. | 
| static CertPathValidator | getInstance(String algorithm,
           String provider)Returns a  CertPathValidatorobject that implements the
 specified algorithm. | 
| Provider | getProvider()Returns the  Providerof thisCertPathValidator. | 
| CertPathChecker | getRevocationChecker()Returns a  CertPathCheckerthat the encapsulatedCertPathValidatorSpiimplementation uses to check the revocation
 status of certificates. | 
| CertPathValidatorResult | validate(CertPath certPath,
        CertPathParameters params)Validates the specified certification path using the specified
 algorithm parameter set. | 
protected CertPathValidator(CertPathValidatorSpi validatorSpi, Provider provider, String algorithm)
CertPathValidator object of the given algorithm,
 and encapsulates the given provider implementation (SPI object) in it.validatorSpi - the provider implementationprovider - the provideralgorithm - the algorithm namepublic static CertPathValidator getInstance(String algorithm) throws NoSuchAlgorithmException
CertPathValidator object that implements the
 specified algorithm.
 This method traverses the list of registered security Providers, starting with the most preferred Provider. A new CertPathValidator object encapsulating the CertPathValidatorSpi 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.
algorithm - the name of the requested CertPathValidator
  algorithm. See the CertPathValidator section in the 
 Java Cryptography Architecture Standard Algorithm Name Documentation
 for information about standard algorithm names.CertPathValidator object that implements the
          specified algorithm.NoSuchAlgorithmException - if no Provider supports a
          CertPathValidatorSpi implementation for the
          specified algorithm.Providerpublic static CertPathValidator getInstance(String algorithm, String provider) throws NoSuchAlgorithmException, NoSuchProviderException
CertPathValidator object that implements the
 specified algorithm.
 A new CertPathValidator object encapsulating the CertPathValidatorSpi 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.
algorithm - the name of the requested CertPathValidator
  algorithm. See the CertPathValidator section in the 
 Java Cryptography Architecture Standard Algorithm Name Documentation
 for information about standard algorithm names.provider - the name of the provider.CertPathValidator object that implements the
          specified algorithm.NoSuchAlgorithmException - if a CertPathValidatorSpi
          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.IllegalArgumentException - if the provider is
          null or empty.Providerpublic static CertPathValidator getInstance(String algorithm, Provider provider) throws NoSuchAlgorithmException
CertPathValidator object that implements the
 specified algorithm.
 A new CertPathValidator object encapsulating the CertPathValidatorSpi implementation from the specified Provider object is returned. Note that the specified Provider object does not have to be registered in the provider list.
algorithm - the name of the requested CertPathValidator
 algorithm. See the CertPathValidator section in the 
 Java Cryptography Architecture Standard Algorithm Name Documentation
 for information about standard algorithm names.provider - the provider.CertPathValidator object that implements the
          specified algorithm.NoSuchAlgorithmException - if a CertPathValidatorSpi
          implementation for the specified algorithm is not available
          from the specified Provider object.IllegalArgumentException - if the provider is
          null.Providerpublic final Provider getProvider()
Provider of this
 CertPathValidator.Provider of this CertPathValidatorpublic final String getAlgorithm()
CertPathValidator.CertPathValidatorpublic final CertPathValidatorResult validate(CertPath certPath, CertPathParameters params) throws CertPathValidatorException, InvalidAlgorithmParameterException
 The CertPath specified must be of a type that is
 supported by the validation algorithm, otherwise an
 InvalidAlgorithmParameterException will be thrown. For
 example, a CertPathValidator that implements the PKIX
 algorithm validates CertPath objects of type X.509.
certPath - the CertPath to be validatedparams - the algorithm parametersCertPathValidatorException - if the CertPath
 does not validateInvalidAlgorithmParameterException - if the specified
 parameters or the type of the specified CertPath are
 inappropriate for this CertPathValidatorpublic static final String getDefaultType()
CertPathValidator type as specified by
 the certpathvalidator.type security property, or the string
 "PKIX" if no such property exists.
 The default CertPathValidator 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 CertPathValidator type can be changed by
 setting the value of the certpathvalidator.type security
 property to the desired type.
CertPathValidator type as specified
 by the certpathvalidator.type security property, or the string
 "PKIX" if no such property exists.security propertiespublic final CertPathChecker getRevocationChecker()
CertPathChecker that the encapsulated
 CertPathValidatorSpi implementation uses to check the revocation
 status of certificates. A PKIX implementation returns objects of
 type PKIXRevocationChecker. Each invocation of this method
 returns a new instance of CertPathChecker.
 The primary purpose of this method is to allow callers to specify additional input parameters and options specific to revocation checking. See the class description for an example.
CertPathCheckerUnsupportedOperationException - if the service provider does not
         support this method Submit a bug or feature 
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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