java.security.cert.CertPathBuilder#getInstance()源码实例Demo

/**
 * Perform a PKIX build.
 *
 * @param params PKIXBuilderParameters to use in building
 * @throws Exception on error
 */
public static void build(PKIXBuilderParameters params)
    throws Exception {
    CertPathBuilder builder =
        CertPathBuilder.getInstance("PKIX");
    CertPathBuilderResult cpbr = builder.build(params);
}
 

/**
 * Perform a PKIX path build. On failure, throw an exception.
 *
 * @param params PKIXBuilderParameters to use in validation
 * @throws Exception on error
 */
public static PKIXCertPathBuilderResult build(PKIXBuilderParameters params)
    throws Exception {
    CertPathBuilder builder =
        CertPathBuilder.getInstance("PKIX");
    return (PKIXCertPathBuilderResult) builder.build(params);
}
 

private void doBuild(X509Certificate userCert) throws Exception {
        // get the set of trusted CA certificates (only one in this instance)
        HashSet trustAnchors = new HashSet();
        X509Certificate trustedCert = getTrustedCertificate();
        trustAnchors.add(new TrustAnchor(trustedCert, null));

        // put together a CertStore (repository of the certificates and CRLs)
        ArrayList certs = new ArrayList();
        certs.add(trustedCert);
        certs.add(userCert);
        CollectionCertStoreParameters certStoreParams = new CollectionCertStoreParameters(certs);
        CertStore certStore = CertStore.getInstance("Collection", certStoreParams);

        // specify the target certificate via a CertSelector
        X509CertSelector certSelector = new X509CertSelector();
        certSelector.setCertificate(userCert);
        certSelector.setSubject(userCert.getSubjectDN().getName()); // seems to be required

        // build a valid cerificate path
        CertPathBuilder certPathBuilder = CertPathBuilder.getInstance("PKIX", "SUN");
        PKIXBuilderParameters certPathBuilderParams = new PKIXBuilderParameters(trustAnchors, certSelector);
        certPathBuilderParams.addCertStore(certStore);
        certPathBuilderParams.setRevocationEnabled(false);
        CertPathBuilderResult result = certPathBuilder.build(certPathBuilderParams);

        // get and show cert path
        CertPath certPath = result.getCertPath();
//        System.out.println(certPath.toString());
    }
 

/**
 * Perform a PKIX build.
 *
 * @param params PKIXBuilderParameters to use in the build
 * @throws Exception on error
 */
public static void build(PKIXBuilderParameters params)
    throws Exception {
    CertPathBuilder builder =
        CertPathBuilder.getInstance("PKIX", "SUN");
    CertPathBuilderResult cpbr = builder.build(params);
}
 

/**
 * Perform a PKIX build.
 *
 * @param params PKIXBuilderParameters to use in the build
 * @throws Exception on error
 */
public static void build(PKIXBuilderParameters params)
    throws Exception {
    CertPathBuilder builder =
        CertPathBuilder.getInstance("PKIX", "SUN");
    CertPathBuilderResult cpbr = builder.build(params);
}
 

/**
 * Attempts to build a certification chain for given certificate to verify
 * it. Relies on a set of root CA certificates (trust anchors) and a set of
 * intermediate certificates (to be used as part of the chain).
 */
private PKIXCertPathBuilderResult verifyCertificate(X509Certificate certificate, Set<X509Certificate> trustedRootCerts, Set<X509Certificate> intermediateCerts)
		throws GeneralSecurityException {

	// Create the selector that specifies the starting certificate
	X509CertSelector selector = new X509CertSelector();
	selector.setBasicConstraints(-2);
	selector.setCertificate(certificate);

	// Create the trust anchors (set of root CA certificates)
	Set<TrustAnchor> trustAnchors = new HashSet<TrustAnchor>();
	for (X509Certificate trustedRootCert : trustedRootCerts) {
		trustAnchors.add(new TrustAnchor(trustedRootCert, null));
	}

	// Configure the PKIX certificate builder algorithm parameters
	PKIXBuilderParameters pkixParams = new PKIXBuilderParameters(trustAnchors, selector);

	// Turn off default revocation-checking mechanism
	pkixParams.setRevocationEnabled(false);

	// Specify a list of intermediate certificates
	CertStore intermediateCertStore = CertStore.getInstance("Collection", new CollectionCertStoreParameters(intermediateCerts));
	pkixParams.addCertStore(intermediateCertStore);

	// Build and verify the certification chain
	CertPathBuilder builder = CertPathBuilder.getInstance("PKIX", BouncyCastleProvider.PROVIDER_NAME);
	PKIXCertPathBuilderResult certPathBuilderResult = (PKIXCertPathBuilderResult) builder.build(pkixParams);

	// Additional check to Verify cert path
	CertPathValidator certPathValidator = CertPathValidator.getInstance("PKIX", BouncyCastleProvider.PROVIDER_NAME);
	PKIXCertPathValidatorResult certPathValidationResult = (PKIXCertPathValidatorResult) certPathValidator.validate(certPathBuilderResult.getCertPath(), pkixParams);

	return certPathBuilderResult;
}
 

/**
 * Perform a PKIX build.
 *
 * @param params PKIXBuilderParameters to use in the build
 * @throws Exception on error
 */
public static void build(PKIXBuilderParameters params)
    throws Exception {
    CertPathBuilder builder =
        CertPathBuilder.getInstance("PKIX", "SUN");
    CertPathBuilderResult cpbr = builder.build(params);
}
 

/**
 * Perform a PKIX path build. On failure, throw an exception.
 *
 * @param params PKIXBuilderParameters to use in validation
 * @throws Exception on error
 */
public static PKIXCertPathBuilderResult build(PKIXBuilderParameters params)
    throws Exception {
    CertPathBuilder builder =
        CertPathBuilder.getInstance("PKIX");
    return (PKIXCertPathBuilderResult) builder.build(params);
}
 

public static void validateTrustChain(X509Certificate certificate,
                                      List<X509Certificate> chain,
                                      Set<X509Certificate> trustedCertificates,
                                      Set<X509Certificate> authorityCertificates) throws UaException {

    boolean certificateTrusted = trustedCertificates.stream()
            .anyMatch(c -> Arrays.equals(certificate.getSignature(), c.getSignature()));

    if (certificateTrusted) return;

    try {
        Set<TrustAnchor> trustAnchors = new HashSet<>();
        authorityCertificates.forEach(ca -> trustAnchors.add(new TrustAnchor(ca, null)));

        X509CertSelector selector = new X509CertSelector();
        selector.setCertificate(certificate);

        PKIXBuilderParameters params = new PKIXBuilderParameters(trustAnchors, selector);

        params.setRevocationEnabled(false);

        CertStore intermediateCertStore =
                CertStore.getInstance("Collection", new CollectionCertStoreParameters(chain));

        params.addCertStore(intermediateCertStore);

        CertPathBuilder builder = CertPathBuilder.getInstance("PKIX");

        PKIXCertPathBuilderResult result = (PKIXCertPathBuilderResult) builder.build(params);

        LOGGER.debug("Validated certificate chain: {}", result.getCertPath());
    } catch (Throwable t) {
        throw new UaException(StatusCodes.Bad_SecurityChecksFailed);
    }
}
 

/**
 * Perform a PKIX build.
 *
 * @param params PKIXBuilderParameters to use in building
 * @throws Exception on error
 */
public static void build(PKIXBuilderParameters params)
    throws Exception {
    CertPathBuilder builder =
        CertPathBuilder.getInstance("PKIX");
    CertPathBuilderResult cpbr = builder.build(params);
}
 

/**
 * Perform a PKIX build.
 *
 * @param params PKIXBuilderParameters to use in building
 * @throws Exception on error
 */
public static void build(PKIXBuilderParameters params)
    throws Exception {
    CertPathBuilder builder =
        CertPathBuilder.getInstance("PKIX");
    CertPathBuilderResult cpbr = builder.build(params);
}
 

/**
 * Perform a PKIX path build. On failure, throw an exception.
 *
 * @param params PKIXBuilderParameters to use in validation
 * @throws Exception on error
 */
public static PKIXCertPathBuilderResult build(PKIXBuilderParameters params)
    throws Exception {
    CertPathBuilder builder =
        CertPathBuilder.getInstance("PKIX");
    return (PKIXCertPathBuilderResult) builder.build(params);
}
 

private void doBuild(X509Certificate userCert) throws Exception {
        // get the set of trusted CA certificates (only one in this instance)
        HashSet trustAnchors = new HashSet();
        X509Certificate trustedCert = getTrustedCertificate();
        trustAnchors.add(new TrustAnchor(trustedCert, null));

        // put together a CertStore (repository of the certificates and CRLs)
        ArrayList certs = new ArrayList();
        certs.add(trustedCert);
        certs.add(userCert);
        CollectionCertStoreParameters certStoreParams = new CollectionCertStoreParameters(certs);
        CertStore certStore = CertStore.getInstance("Collection", certStoreParams);

        // specify the target certificate via a CertSelector
        X509CertSelector certSelector = new X509CertSelector();
        certSelector.setCertificate(userCert);
        certSelector.setSubject(userCert.getSubjectDN().getName()); // seems to be required

        // build a valid cerificate path
        CertPathBuilder certPathBuilder = CertPathBuilder.getInstance("PKIX", "SUN");
        PKIXBuilderParameters certPathBuilderParams = new PKIXBuilderParameters(trustAnchors, certSelector);
        certPathBuilderParams.addCertStore(certStore);
        certPathBuilderParams.setRevocationEnabled(false);
        CertPathBuilderResult result = certPathBuilder.build(certPathBuilderParams);

        // get and show cert path
        CertPath certPath = result.getCertPath();
//        System.out.println(certPath.toString());
    }
 

/**
 * Perform a PKIX build.
 *
 * @param params PKIXBuilderParameters to use in building
 * @throws Exception on error
 */
public static void build(PKIXBuilderParameters params)
    throws Exception {
    CertPathBuilder builder =
        CertPathBuilder.getInstance("PKIX");
    CertPathBuilderResult cpbr = builder.build(params);
}
 

/**
 * Perform a PKIX build.
 *
 * @param params PKIXBuilderParameters to use in the build
 * @throws Exception on error
 */
public static void build(PKIXBuilderParameters params)
    throws Exception {
    CertPathBuilder builder =
        CertPathBuilder.getInstance("PKIX", "SUN");
    CertPathBuilderResult cpbr = builder.build(params);
}
 

/**
 * Perform a PKIX build.
 *
 * @param params PKIXBuilderParameters to use in the build
 * @throws Exception on error
 */
public static void build(PKIXBuilderParameters params)
    throws Exception {
    CertPathBuilder builder =
        CertPathBuilder.getInstance("PKIX", "SUN");
    CertPathBuilderResult cpbr = builder.build(params);
}
 

/**
 * Perform a PKIX path build. On failure, throw an exception.
 *
 * @param params PKIXBuilderParameters to use in validation
 * @throws Exception on error
 */
public static PKIXCertPathBuilderResult build(PKIXBuilderParameters params)
    throws Exception {
    CertPathBuilder builder =
        CertPathBuilder.getInstance("PKIX");
    return (PKIXCertPathBuilderResult) builder.build(params);
}
 

public static void main(String[] argv) throws Exception {
    Provider stubProvider = new StubProvider();
    CertPathBuilder cpb = CertPathBuilder.getInstance("PKIX", stubProvider);
    System.out.println("Test passed.");
}
 

public static void main(String[] argv) throws Exception {
    Provider stubProvider = new StubProvider();
    CertPathBuilder cpb = CertPathBuilder.getInstance("PKIX", stubProvider);
    System.out.println("Test passed.");
}
 

public static void main(String[] argv) throws Exception {
    Provider stubProvider = new StubProvider();
    CertPathBuilder cpb = CertPathBuilder.getInstance("PKIX", stubProvider);
    System.out.println("Test passed.");
}