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sun.security.provider.certpath

pack-priv Class KeyChecker

extends PKIXCertPathChecker
Class Inheritance
Imports
java.util.*, java.security.cert.*, .PKIXReason, sun.security.util.Debug
KeyChecker is a PKIXCertPathChecker that checks that the keyCertSign bit is set in the keyUsage extension in an intermediate CA certificate. It also checks whether the final certificate in a certification path meets the specified target constraints specified as a CertSelector in the PKIXParameters passed to the CertPathValidator.
Author
Yassir Elley
Since
1.4

Field Summary

Modifier and TypeField and Description
private final int
certPathLen

private static final Debug
debug

private static final int
KEY_CERT_SIGN

private int
remainingCerts

private Set<String>
supportedExts

private final CertSelector
targetConstraints

Constructor Summary

AccessConstructor and Description
pack-priv
KeyChecker(int
allowable cert path length
certPathLen, CertSelector
a CertSelector object specifying the constraints on the target certificate
targetCertSel)

Creates a KeyChecker.

Method Summary

Modifier and TypeMethod and Description
public void
check(Certificate
the Certificate
cert, Collection<String> unresCritExts)

Implements abstract java.security.cert.PKIXCertPathChecker.check.

Checks that keyUsage and target constraints are satisfied by the specified certificate.

public Set<String>
getSupportedExtensions()

Implements abstract java.security.cert.PKIXCertPathChecker.getSupportedExtensions.

Returns an immutable Set of X.509 certificate extensions that this PKIXCertPathChecker supports (i.e. recognizes, is able to process), or null if no extensions are supported.

public void
init(boolean forward)

Implements abstract java.security.cert.PKIXCertPathChecker.init.

Implements java.security.cert.CertPathChecker.init.

Initializes the internal state of the checker from parameters specified in the constructor

public boolean
isForwardCheckingSupported()

Implements abstract java.security.cert.PKIXCertPathChecker.isForwardCheckingSupported.

Implements java.security.cert.CertPathChecker.isForwardCheckingSupported.

Indicates if forward checking is supported.

pack-priv static void
verifyCAKeyUsage(X509Certificate cert)

Verifies the key usage extension in a CA cert.

Inherited from java.security.cert.PKIXCertPathChecker:
checkclone

Field Detail

certPathLenback to summary
private final int certPathLen
debugback to summary
private static final Debug debug
KEY_CERT_SIGNback to summary
private static final int KEY_CERT_SIGN
remainingCertsback to summary
private int remainingCerts
supportedExtsback to summary
private Set<String> supportedExts
targetConstraintsback to summary
private final CertSelector targetConstraints

Constructor Detail

KeyCheckerback to summary
pack-priv KeyChecker(int certPathLen, CertSelector targetCertSel)

Creates a KeyChecker.

Parameters
certPathLen:int

allowable cert path length

targetCertSel:CertSelector

a CertSelector object specifying the constraints on the target certificate

Method Detail

checkback to summary
public void check(Certificate cert, Collection<String> unresCritExts) throws CertPathValidatorException

Implements abstract java.security.cert.PKIXCertPathChecker.check.

Checks that keyUsage and target constraints are satisfied by the specified certificate.

Parameters
cert:Certificate

the Certificate

Annotations
@Override
Exceptions
CertPathValidatorException:
if certificate does not verify
getSupportedExtensionsback to summary
public Set<String> getSupportedExtensions()

Implements abstract java.security.cert.PKIXCertPathChecker.getSupportedExtensions.

Doc from java.security.cert.PKIXCertPathChecker.getSupportedExtensions.

Returns an immutable Set of X.509 certificate extensions that this PKIXCertPathChecker supports (i.e. recognizes, is able to process), or null if no extensions are supported.

Each element of the set is a String representing the Object Identifier (OID) of the X.509 extension that is supported. The OID is represented by a set of nonnegative integers separated by periods.

All X.509 certificate extensions that a PKIXCertPathChecker might possibly be able to process should be included in the set.

Annotations
@Override
initback to summary
public void init(boolean forward) throws CertPathValidatorException

Implements abstract java.security.cert.PKIXCertPathChecker.init.

Implements java.security.cert.CertPathChecker.init.

Initializes the internal state of the checker from parameters specified in the constructor

Annotations
@Override
Exceptions
CertPathValidatorException:

Doc from java.security.cert.PKIXCertPathChecker.init.

if this PKIXCertPathChecker is unable to check certificates in the specified order; it should never be thrown if the forward flag is false since reverse checking must be supported

isForwardCheckingSupportedback to summary
public boolean isForwardCheckingSupported()

Implements abstract java.security.cert.PKIXCertPathChecker.isForwardCheckingSupported.

Implements java.security.cert.CertPathChecker.isForwardCheckingSupported.

Doc from java.security.cert.PKIXCertPathChecker.isForwardCheckingSupported.

Indicates if forward checking is supported. Forward checking refers to the ability of the PKIXCertPathChecker to perform its checks when certificates are presented to the check method in the forward direction (from target to most-trusted CA).

Annotations
@Override
verifyCAKeyUsageback to summary
pack-priv static void verifyCAKeyUsage(X509Certificate cert) throws CertPathValidatorException

Verifies the key usage extension in a CA cert. The key usage extension, if present, must assert the keyCertSign bit. The extended key usage extension is not checked (see CR 4776794 for more information).