package org.bouncycastle.jce.provider;
import java.io.IOException;
import java.math.BigInteger;
import java.security.GeneralSecurityException;
import java.security.PublicKey;
import java.security.cert.CertPath;
import java.security.cert.CertPathBuilder;
import java.security.cert.CertPathBuilderException;
import java.security.cert.CertPathValidatorException;
import java.security.cert.CertificateExpiredException;
import java.security.cert.CertificateNotYetValidException;
import java.security.cert.PKIXCertPathChecker;
import java.security.cert.X509CRL;
import java.security.cert.X509Certificate;
import java.security.cert.X509Extension;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.Vector;
import javax.security.auth.x500.X500Principal;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1InputStream;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERInteger;
import org.bouncycastle.asn1.DERObjectIdentifier;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x509.BasicConstraints;
import org.bouncycastle.asn1.x509.CRLDistPoint;
import org.bouncycastle.asn1.x509.CRLReason;
import org.bouncycastle.asn1.x509.DistributionPoint;
import org.bouncycastle.asn1.x509.DistributionPointName;
import org.bouncycastle.asn1.x509.GeneralName;
import org.bouncycastle.asn1.x509.GeneralNames;
import org.bouncycastle.asn1.x509.GeneralSubtree;
import org.bouncycastle.asn1.x509.IssuingDistributionPoint;
import org.bouncycastle.asn1.x509.NameConstraints;
import org.bouncycastle.asn1.x509.PolicyInformation;
import org.bouncycastle.asn1.x509.X509Extensions;
import org.bouncycastle.asn1.x509.X509Name;
import org.bouncycastle.jce.exception.ExtCertPathValidatorException;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.x509.ExtendedPKIXBuilderParameters;
import org.bouncycastle.x509.ExtendedPKIXParameters;
import org.bouncycastle.x509.X509CRLStoreSelector;
import org.bouncycastle.x509.X509CertStoreSelector;
public class RFC3280CertPathUtilities
{
private static final PKIXCRLUtil CRL_UTIL = new PKIXCRLUtil();
/**
* If the complete CRL includes an issuing distribution point (IDP) CRL
* extension check the following:
* <p/>
* (i) If the distribution point name is present in the IDP CRL extension
* and the distribution field is present in the DP, then verify that one of
* the names in the IDP matches one of the names in the DP. If the
* distribution point name is present in the IDP CRL extension and the
* distribution field is omitted from the DP, then verify that one of the
* names in the IDP matches one of the names in the cRLIssuer field of the
* DP.
* </p>
* <p/>
* (ii) If the onlyContainsUserCerts boolean is asserted in the IDP CRL
* extension, verify that the certificate does not include the basic
* constraints extension with the cA boolean asserted.
* </p>
* <p/>
* (iii) If the onlyContainsCACerts boolean is asserted in the IDP CRL
* extension, verify that the certificate includes the basic constraints
* extension with the cA boolean asserted.
* </p>
* <p/>
* (iv) Verify that the onlyContainsAttributeCerts boolean is not asserted.
* </p>
*
* @param dp The distribution point.
* @param cert The certificate.
* @param crl The CRL.
* @throws AnnotatedException if one of the conditions is not met or an error occurs.
*/
protected static void processCRLB2(
DistributionPoint dp,
Object cert,
X509CRL crl)
throws AnnotatedException
{
IssuingDistributionPoint idp = null;
try
{
idp = IssuingDistributionPoint.getInstance(CertPathValidatorUtilities.getExtensionValue(crl,
RFC3280CertPathUtilities.ISSUING_DISTRIBUTION_POINT));
}
catch (Exception e)
{
throw new AnnotatedException("Issuing distribution point extension could not be decoded.", e);
}
// (b) (2) (i)
// distribution point name is present
if (idp != null)
{
if (idp.getDistributionPoint() != null)
{
// make list of names
DistributionPointName dpName = IssuingDistributionPoint.getInstance(idp).getDistributionPoint();
List names = new ArrayList();
if (dpName.getType() == DistributionPointName.FULL_NAME)
{
GeneralName[] genNames = GeneralNames.getInstance(dpName.getName()).getNames();
for (int j = 0; j < genNames.length; j++)
{
names.add(genNames[j]);
}
}
if (dpName.getType() == DistributionPointName.NAME_RELATIVE_TO_CRL_ISSUER)
{
ASN1EncodableVector vec = new ASN1EncodableVector();
try
{
Enumeration e = ASN1Sequence.getInstance(
ASN1Sequence.fromByteArray(CertPathValidatorUtilities.getIssuerPrincipal(crl)
.getEncoded())).getObjects();
while (e.hasMoreElements())
{
vec.add((ASN1Encodable)e.nextElement());
}
}
catch (IOException e)
{
throw new AnnotatedException("Could not read CRL issuer.", e);
}
vec.add(dpName.getName());
names.add(new GeneralName(X509Name.getInstance(new DERSequence(vec))));
}
boolean matches = false;
// verify that one of the names in the IDP matches one
// of the names in the DP.
if (dp.getDistributionPoint() != null)
{
dpName = dp.getDistributionPoint();
GeneralName[] genNames = null;
if (dpName.getType() == DistributionPointName.FULL_NAME)
{
genNames = GeneralNames.getInstance(dpName.getName()).getNames();
}
if (dpName.getType() == DistributionPointName.NAME_RELATIVE_TO_CRL_ISSUER)
{
if (dp.getCRLIssuer() != null)
{
genNames = dp.getCRLIssuer().getNames();
}
else
{
genNames = new GeneralName[1];
try
{
genNames[0] = new GeneralName(new X509Name(
(ASN1Sequence)ASN1Sequence.fromByteArray(CertPathValidatorUtilities
.getEncodedIssuerPrincipal(cert).getEncoded())));
}
catch (IOException e)
{
throw new AnnotatedException("Could not read certificate issuer.", e);
}
}
for (int j = 0; j < genNames.length; j++)
{
Enumeration e = ASN1Sequence.getInstance(genNames[j].getName().toASN1Primitive()).getObjects();
ASN1EncodableVector vec = new ASN1EncodableVector();
while (e.hasMoreElements())
{
vec.add((ASN1Encodable)e.nextElement());
}
vec.add(dpName.getName());
genNames[j] = new GeneralName(new X509Name(new DERSequence(vec)));
}
}
if (genNames != null)
{
for (int j = 0; j < genNames.length; j++)
{
if (names.contains(genNames[j]))
{
matches = true;
break;
}
}
}
if (!matches)
{
throw new AnnotatedException(
"No match for certificate CRL issuing distribution point name to cRLIssuer CRL distribution point.");
}
}
// verify that one of the names in
// the IDP matches one of the names in the cRLIssuer field of
// the DP
else
{
if (dp.getCRLIssuer() == null)
{
throw new AnnotatedException("Either the cRLIssuer or the distributionPoint field must "
+ "be contained in DistributionPoint.");
}
GeneralName[] genNames = dp.getCRLIssuer().getNames();
for (int j = 0; j < genNames.length; j++)
{
if (names.contains(genNames[j]))
{
matches = true;
break;
}
}
if (!matches)
{
throw new AnnotatedException(
"No match for certificate CRL issuing distribution point name to cRLIssuer CRL distribution point.");
}
}
}
BasicConstraints bc = null;
try
{
bc = BasicConstraints.getInstance(CertPathValidatorUtilities.getExtensionValue((X509Extension)cert,
BASIC_CONSTRAINTS));
}
catch (Exception e)
{
throw new AnnotatedException("Basic constraints extension could not be decoded.", e);
}
if (cert instanceof X509Certificate)
{
// (b) (2) (ii)
if (idp.onlyContainsUserCerts() && (bc != null && bc.isCA()))
{
throw new AnnotatedException("CA Cert CRL only contains user certificates.");
}
// (b) (2) (iii)
if (idp.onlyContainsCACerts() && (bc == null || !bc.isCA()))
{
throw new AnnotatedException("End CRL only contains CA certificates.");
}
}
// (b) (2) (iv)
if (idp.onlyContainsAttributeCerts())
{
throw new AnnotatedException("onlyContainsAttributeCerts boolean is asserted.");
}
}
}
/**
* If the DP includes cRLIssuer, then verify that the issuer field in the
* complete CRL matches cRLIssuer in the DP and that the complete CRL
* contains an issuing distribution point extension with the indirectCRL
* boolean asserted. Otherwise, verify that the CRL issuer matches the
* certificate issuer.
*
* @param dp The distribution point.
* @param cert The certificate ot attribute certificate.
* @param crl The CRL for <code>cert</code>.
* @throws AnnotatedException if one of the above conditions does not apply or an error
* occurs.
*/
protected static void processCRLB1(
DistributionPoint dp,
Object cert,
X509CRL crl)
throws AnnotatedException
{
ASN1Primitive idp = CertPathValidatorUtilities.getExtensionValue(crl, ISSUING_DISTRIBUTION_POINT);
boolean isIndirect = false;
if (idp != null)
{
if (IssuingDistributionPoint.getInstance(idp).isIndirectCRL())
{
isIndirect = true;
}
}
byte[] issuerBytes = CertPathValidatorUtilities.getIssuerPrincipal(crl).getEncoded();
boolean matchIssuer = false;
if (dp.getCRLIssuer() != null)
{
GeneralName genNames[] = dp.getCRLIssuer().getNames();
for (int j = 0; j < genNames.length; j++)
{
if (genNames[j].getTagNo() == GeneralName.directoryName)
{
try
{
if (Arrays.areEqual(genNames[j].getName().toASN1Primitive().getEncoded(), issuerBytes))
{
matchIssuer = true;
}
}
catch (IOException e)
{
throw new AnnotatedException(
"CRL issuer information from distribution point cannot be decoded.", e);
}
}
}
if (matchIssuer && !isIndirect)
{
throw new AnnotatedException("Distribution point contains cRLIssuer field but CRL is not indirect.");
}
if (!matchIssuer)
{
throw new AnnotatedException("CRL issuer of CRL does not match CRL issuer of distribution point.");
}
}
else
{
if (CertPathValidatorUtilities.getIssuerPrincipal(crl).equals(
CertPathValidatorUtilities.getEncodedIssuerPrincipal(cert)))
{
matchIssuer = true;
}
}
if (!matchIssuer)
{
throw new AnnotatedException("Cannot find matching CRL issuer for certificate.");
}
}
protected static ReasonsMask processCRLD(
X509CRL crl,
DistributionPoint dp)
throws AnnotatedException
{
IssuingDistributionPoint idp = null;
try
{
idp = IssuingDistributionPoint.getInstance(CertPathValidatorUtilities.getExtensionValue(crl,
RFC3280CertPathUtilities.ISSUING_DISTRIBUTION_POINT));
}
catch (Exception e)
{
throw new AnnotatedException("Issuing distribution point extension could not be decoded.", e);
}
// (d) (1)
if (idp != null && idp.getOnlySomeReasons() != null && dp.getReasons() != null)
{
return new ReasonsMask(dp.getReasons()).intersect(new ReasonsMask(idp.getOnlySomeReasons()));
}
// (d) (4)
if ((idp == null || idp.getOnlySomeReasons() == null) && dp.getReasons() == null)
{
return ReasonsMask.allReasons;
}
// (d) (2) and (d)(3)
return (dp.getReasons() == null
? ReasonsMask.allReasons
: new ReasonsMask(dp.getReasons())).intersect(idp == null
? ReasonsMask.allReasons
: new ReasonsMask(idp.getOnlySomeReasons()));
}
public static final String CERTIFICATE_POLICIES = X509Extensions.CertificatePolicies.getId();
public static final String POLICY_MAPPINGS = X509Extensions.PolicyMappings.getId();
public static final String INHIBIT_ANY_POLICY = X509Extensions.InhibitAnyPolicy.getId();
public static final String ISSUING_DISTRIBUTION_POINT = X509Extensions.IssuingDistributionPoint.getId();
public static final String FRESHEST_CRL = X509Extensions.FreshestCRL.getId();
public static final String DELTA_CRL_INDICATOR = X509Extensions.DeltaCRLIndicator.getId();
public static final String POLICY_CONSTRAINTS = X509Extensions.PolicyConstraints.getId();
public static final String BASIC_CONSTRAINTS = X509Extensions.BasicConstraints.getId();
public static final String CRL_DISTRIBUTION_POINTS = X509Extensions.CRLDistributionPoints.getId();
public static final String SUBJECT_ALTERNATIVE_NAME = X509Extensions.SubjectAlternativeName.getId();
public static final String NAME_CONSTRAINTS = X509Extensions.NameConstraints.getId();
public static final String AUTHORITY_KEY_IDENTIFIER = X509Extensions.AuthorityKeyIdentifier.getId();
public static final String KEY_USAGE = X509Extensions.KeyUsage.getId();
public static final String CRL_NUMBER = X509Extensions.CRLNumber.getId();
public static final String ANY_POLICY = "2.5.29.32.0";
/*
* key usage bits
*/
protected static final int KEY_CERT_SIGN = 5;
protected static final int CRL_SIGN = 6;
/**
* Obtain and validate the certification path for the complete CRL issuer.
* If a key usage extension is present in the CRL issuer's certificate,
* verify that the cRLSign bit is set.
*
* @param crl CRL which contains revocation information for the certificate
* <code>cert</code>.
* @param cert The attribute certificate or certificate to check if it is
* revoked.
* @param defaultCRLSignCert The issuer certificate of the certificate <code>cert</code>.
* @param defaultCRLSignKey The public key of the issuer certificate
* <code>defaultCRLSignCert</code>.
* @param paramsPKIX paramsPKIX PKIX parameters.
* @param certPathCerts The certificates on the certification path.
* @return A <code>Set</code> with all keys of possible CRL issuer
* certificates.
* @throws AnnotatedException if the CRL is not valid or the status cannot be checked or
* some error occurs.
*/
protected static Set processCRLF(
X509CRL crl,
Object cert,
X509Certificate defaultCRLSignCert,
PublicKey defaultCRLSignKey,
ExtendedPKIXParameters paramsPKIX,
List certPathCerts)
throws AnnotatedException
{
// (f)
// get issuer from CRL
X509CertStoreSelector selector = new X509CertStoreSelector();
try
{
byte[] issuerPrincipal = CertPathValidatorUtilities.getIssuerPrincipal(crl).getEncoded();
selector.setSubject(issuerPrincipal);
}
catch (IOException e)
{
throw new AnnotatedException(
"Subject criteria for certificate selector to find issuer certificate for CRL could not be set.", e);
}
// get CRL signing certs
Collection coll;
try
{
coll = CertPathValidatorUtilities.findCertificates(selector, paramsPKIX.getStores());
coll.addAll(CertPathValidatorUtilities.findCertificates(selector, paramsPKIX.getAdditionalStores()));
coll.addAll(CertPathValidatorUtilities.findCertificates(selector, paramsPKIX.getCertStores()));
}
catch (AnnotatedException e)
{
throw new AnnotatedException("Issuer certificate for CRL cannot be searched.", e);
}
coll.add(defaultCRLSignCert);
Iterator cert_it = coll.iterator();
List validCerts = new ArrayList();
List validKeys = new ArrayList();
while (cert_it.hasNext())
{
X509Certificate signingCert = (X509Certificate)cert_it.next();
/*
* CA of the certificate, for which this CRL is checked, has also
* signed CRL, so skip the path validation, because is already done
*/
if (signingCert.equals(defaultCRLSignCert))
{
validCerts.add(signingCert);
validKeys.add(defaultCRLSignKey);
continue;
}
try
{
CertPathBuilder builder = CertPathBuilder.getInstance("PKIX", BouncyCastleProvider.PROVIDER_NAME);
selector = new X509CertStoreSelector();
selector.setCertificate(signingCert);
ExtendedPKIXParameters temp = (ExtendedPKIXParameters)paramsPKIX.clone();
temp.setTargetCertConstraints(selector);
ExtendedPKIXBuilderParameters params = (ExtendedPKIXBuilderParameters)ExtendedPKIXBuilderParameters
.getInstance(temp);
/*
* if signingCert is placed not higher on the cert path a
* dependency loop results. CRL for cert is checked, but
* signingCert is needed for checking the CRL which is dependent
* on checking cert because it is higher in the cert path and so
* signing signingCert transitively. so, revocation is disabled,
* forgery attacks of the CRL are detected in this outer loop
* for all other it must be enabled to prevent forgery attacks
*/
if (certPathCerts.contains(signingCert))
{
params.setRevocationEnabled(false);
}
else
{
params.setRevocationEnabled(true);
}
List certs = builder.build(params).getCertPath().getCertificates();
validCerts.add(signingCert);
validKeys.add(CertPathValidatorUtilities.getNextWorkingKey(certs, 0));
}
catch (CertPathBuilderException e)
{
throw new AnnotatedException("Internal error.", e);
}
catch (CertPathValidatorException e)
{
throw new AnnotatedException("Public key of issuer certificate of CRL could not be retrieved.", e);
}
catch (Exception e)
{
throw new RuntimeException(e.getMessage());
}
}
Set checkKeys = new HashSet();
AnnotatedException lastException = null;
for (int i = 0; i < validCerts.size(); i++)
{
X509Certificate signCert = (X509Certificate)validCerts.get(i);
boolean[] keyusage = signCert.getKeyUsage();
if (keyusage != null && (keyusage.length < 7 || !keyusage[CRL_SIGN]))
{
lastException = new AnnotatedException(
"Issuer certificate key usage extension does not permit CRL signing.");
}
else
{
checkKeys.add(validKeys.get(i));
}
}
if (checkKeys.isEmpty() && lastException == null)
{
throw new AnnotatedException("Cannot find a valid issuer certificate.");
}
if (checkKeys.isEmpty() && lastException != null)
{
throw lastException;
}
return checkKeys;
}
protected static PublicKey processCRLG(
X509CRL crl,
Set keys)
throws AnnotatedException
{
Exception lastException = null;
for (Iterator it = keys.iterator(); it.hasNext();)
{
PublicKey key = (PublicKey)it.next();
try
{
crl.verify(key);
return key;
}
catch (Exception e)
{
lastException = e;
}
}
throw new AnnotatedException("Cannot verify CRL.", lastException);
}
protected static X509CRL processCRLH(
Set deltacrls,
PublicKey key)
throws AnnotatedException
{
Exception lastException = null;
for (Iterator it = deltacrls.iterator(); it.hasNext();)
{
X509CRL crl = (X509CRL)it.next();
try
{
crl.verify(key);
return crl;
}
catch (Exception e)
{
lastException = e;
}
}
if (lastException != null)
{
throw new AnnotatedException("Cannot verify delta CRL.", lastException);
}
return null;
}
protected static Set processCRLA1i(
Date currentDate,
ExtendedPKIXParameters paramsPKIX,
X509Certificate cert,
X509CRL crl)
throws AnnotatedException
{
Set set = new HashSet();
if (paramsPKIX.isUseDeltasEnabled())
{
CRLDistPoint freshestCRL = null;
try
{
freshestCRL = CRLDistPoint
.getInstance(CertPathValidatorUtilities.getExtensionValue(cert, FRESHEST_CRL));
}
catch (AnnotatedException e)
{
throw new AnnotatedException("Freshest CRL extension could not be decoded from certificate.", e);
}
if (freshestCRL == null)
{
try
{
freshestCRL = CRLDistPoint.getInstance(CertPathValidatorUtilities.getExtensionValue(crl,
FRESHEST_CRL));
}
catch (AnnotatedException e)
{
throw new AnnotatedException("Freshest CRL extension could not be decoded from CRL.", e);
}
}
if (freshestCRL != null)
{
try
{
CertPathValidatorUtilities.addAdditionalStoresFromCRLDistributionPoint(freshestCRL, paramsPKIX);
}
catch (AnnotatedException e)
{
throw new AnnotatedException(
"No new delta CRL locations could be added from Freshest CRL extension.", e);
}
// get delta CRL(s)
try
{
set.addAll(CertPathValidatorUtilities.getDeltaCRLs(currentDate, paramsPKIX, crl));
}
catch (AnnotatedException e)
{
throw new AnnotatedException("Exception obtaining delta CRLs.", e);
}
}
}
return set;
}
protected static Set[] processCRLA1ii(
Date currentDate,
ExtendedPKIXParameters paramsPKIX,
X509Certificate cert,
X509CRL crl)
throws AnnotatedException
{
Set deltaSet = new HashSet();
X509CRLStoreSelector crlselect = new X509CRLStoreSelector();
crlselect.setCertificateChecking(cert);
try
{
crlselect.addIssuerName(crl.getIssuerX500Principal().getEncoded());
}
catch (IOException e)
{
throw new AnnotatedException("Cannot extract issuer from CRL." + e, e);
}
crlselect.setCompleteCRLEnabled(true);
Set completeSet = CRL_UTIL.findCRLs(crlselect, paramsPKIX, currentDate);
if (paramsPKIX.isUseDeltasEnabled())
{
// get delta CRL(s)
try
{
deltaSet.addAll(CertPathValidatorUtilities.getDeltaCRLs(currentDate, paramsPKIX, crl));
}
catch (AnnotatedException e)
{
throw new AnnotatedException("Exception obtaining delta CRLs.", e);
}
}
return new Set[]
{
completeSet,
deltaSet};
}
/**
* If use-deltas is set, verify the issuer and scope of the delta CRL.
*
* @param deltaCRL The delta CRL.
* @param completeCRL The complete CRL.
* @param pkixParams The PKIX paramaters.
* @throws AnnotatedException if an exception occurs.
*/
protected static void processCRLC(
X509CRL deltaCRL,
X509CRL completeCRL,
ExtendedPKIXParameters pkixParams)
throws AnnotatedException
{
if (deltaCRL == null)
{
return;
}
IssuingDistributionPoint completeidp = null;
try
{
completeidp = IssuingDistributionPoint.getInstance(CertPathValidatorUtilities.getExtensionValue(
completeCRL, RFC3280CertPathUtilities.ISSUING_DISTRIBUTION_POINT));
}
catch (Exception e)
{
throw new AnnotatedException("Issuing distribution point extension could not be decoded.", e);
}
if (pkixParams.isUseDeltasEnabled())
{
// (c) (1)
if (!deltaCRL.getIssuerX500Principal().equals(completeCRL.getIssuerX500Principal()))
{
throw new AnnotatedException("Complete CRL issuer does not match delta CRL issuer.");
}
// (c) (2)
IssuingDistributionPoint deltaidp = null;
try
{
deltaidp = IssuingDistributionPoint.getInstance(CertPathValidatorUtilities.getExtensionValue(
deltaCRL, ISSUING_DISTRIBUTION_POINT));
}
catch (Exception e)
{
throw new AnnotatedException(
"Issuing distribution point extension from delta CRL could not be decoded.", e);
}
boolean match = false;
if (completeidp == null)
{
if (deltaidp == null)
{
match = true;
}
}
else
{
if (completeidp.equals(deltaidp))
{
match = true;
}
}
if (!match)
{
throw new AnnotatedException(
"Issuing distribution point extension from delta CRL and complete CRL does not match.");
}
// (c) (3)
ASN1Primitive completeKeyIdentifier = null;
try
{
completeKeyIdentifier = CertPathValidatorUtilities.getExtensionValue(
completeCRL, AUTHORITY_KEY_IDENTIFIER);
}
catch (AnnotatedException e)
{
throw new AnnotatedException(
"Authority key identifier extension could not be extracted from complete CRL.", e);
}
ASN1Primitive deltaKeyIdentifier = null;
try
{
deltaKeyIdentifier = CertPathValidatorUtilities.getExtensionValue(
deltaCRL, AUTHORITY_KEY_IDENTIFIER);
}
catch (AnnotatedException e)
{
throw new AnnotatedException(
"Authority key identifier extension could not be extracted from delta CRL.", e);
}
if (completeKeyIdentifier == null)
{
throw new AnnotatedException("CRL authority key identifier is null.");
}
if (deltaKeyIdentifier == null)
{
throw new AnnotatedException("Delta CRL authority key identifier is null.");
}
if (!completeKeyIdentifier.equals(deltaKeyIdentifier))
{
throw new AnnotatedException(
"Delta CRL authority key identifier does not match complete CRL authority key identifier.");
}
}
}
protected static void processCRLI(
Date validDate,
X509CRL deltacrl,
Object cert,
CertStatus certStatus,
ExtendedPKIXParameters pkixParams)
throws AnnotatedException
{
if (pkixParams.isUseDeltasEnabled() && deltacrl != null)
{
CertPathValidatorUtilities.getCertStatus(validDate, deltacrl, cert, certStatus);
}
}
protected static void processCRLJ(
Date validDate,
X509CRL completecrl,
Object cert,
CertStatus certStatus)
throws AnnotatedException
{
if (certStatus.getCertStatus() == CertStatus.UNREVOKED)
{
CertPathValidatorUtilities.getCertStatus(validDate, completecrl, cert, certStatus);
}
}
protected static PKIXPolicyNode prepareCertB(
CertPath certPath,
int index,
List[] policyNodes,
PKIXPolicyNode validPolicyTree,
int policyMapping)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
int n = certs.size();
// i as defined in the algorithm description
int i = n - index;
// (b)
//
ASN1Sequence pm = null;
try
{
pm = DERSequence.getInstance(CertPathValidatorUtilities.getExtensionValue(cert,
RFC3280CertPathUtilities.POLICY_MAPPINGS));
}
catch (AnnotatedException ex)
{
throw new ExtCertPathValidatorException("Policy mappings extension could not be decoded.", ex, certPath,
index);
}
PKIXPolicyNode _validPolicyTree = validPolicyTree;
if (pm != null)
{
ASN1Sequence mappings = (ASN1Sequence)pm;
Map m_idp = new HashMap();
Set s_idp = new HashSet();
for (int j = 0; j < mappings.size(); j++)
{
ASN1Sequence mapping = (ASN1Sequence)mappings.getObjectAt(j);
String id_p = ((DERObjectIdentifier)mapping.getObjectAt(0)).getId();
String sd_p = ((DERObjectIdentifier)mapping.getObjectAt(1)).getId();
Set tmp;
if (!m_idp.containsKey(id_p))
{
tmp = new HashSet();
tmp.add(sd_p);
m_idp.put(id_p, tmp);
s_idp.add(id_p);
}
else
{
tmp = (Set)m_idp.get(id_p);
tmp.add(sd_p);
}
}
Iterator it_idp = s_idp.iterator();
while (it_idp.hasNext())
{
String id_p = (String)it_idp.next();
//
// (1)
//
if (policyMapping > 0)
{
boolean idp_found = false;
Iterator nodes_i = policyNodes[i].iterator();
while (nodes_i.hasNext())
{
PKIXPolicyNode node = (PKIXPolicyNode)nodes_i.next();
if (node.getValidPolicy().equals(id_p))
{
idp_found = true;
node.expectedPolicies = (Set)m_idp.get(id_p);
break;
}
}
if (!idp_found)
{
nodes_i = policyNodes[i].iterator();
while (nodes_i.hasNext())
{
PKIXPolicyNode node = (PKIXPolicyNode)nodes_i.next();
if (RFC3280CertPathUtilities.ANY_POLICY.equals(node.getValidPolicy()))
{
Set pq = null;
ASN1Sequence policies = null;
try
{
policies = (ASN1Sequence)CertPathValidatorUtilities.getExtensionValue(cert,
RFC3280CertPathUtilities.CERTIFICATE_POLICIES);
}
catch (AnnotatedException e)
{
throw new ExtCertPathValidatorException(
"Certificate policies extension could not be decoded.", e, certPath, index);
}
Enumeration e = policies.getObjects();
while (e.hasMoreElements())
{
PolicyInformation pinfo = null;
try
{
pinfo = PolicyInformation.getInstance(e.nextElement());
}
catch (Exception ex)
{
throw new CertPathValidatorException(
"Policy information could not be decoded.", ex, certPath, index);
}
if (RFC3280CertPathUtilities.ANY_POLICY.equals(pinfo.getPolicyIdentifier().getId()))
{
try
{
pq = CertPathValidatorUtilities
.getQualifierSet(pinfo.getPolicyQualifiers());
}
catch (CertPathValidatorException ex)
{
throw new ExtCertPathValidatorException(
"Policy qualifier info set could not be decoded.", ex, certPath,
index);
}
break;
}
}
boolean ci = false;
if (cert.getCriticalExtensionOIDs() != null)
{
ci = cert.getCriticalExtensionOIDs().contains(
RFC3280CertPathUtilities.CERTIFICATE_POLICIES);
}
PKIXPolicyNode p_node = (PKIXPolicyNode)node.getParent();
if (RFC3280CertPathUtilities.ANY_POLICY.equals(p_node.getValidPolicy()))
{
PKIXPolicyNode c_node = new PKIXPolicyNode(new ArrayList(), i, (Set)m_idp
.get(id_p), p_node, pq, id_p, ci);
p_node.addChild(c_node);
policyNodes[i].add(c_node);
}
break;
}
}
}
//
// (2)
//
}
else if (policyMapping <= 0)
{
Iterator nodes_i = policyNodes[i].iterator();
while (nodes_i.hasNext())
{
PKIXPolicyNode node = (PKIXPolicyNode)nodes_i.next();
if (node.getValidPolicy().equals(id_p))
{
PKIXPolicyNode p_node = (PKIXPolicyNode)node.getParent();
p_node.removeChild(node);
nodes_i.remove();
for (int k = (i - 1); k >= 0; k--)
{
List nodes = policyNodes[k];
for (int l = 0; l < nodes.size(); l++)
{
PKIXPolicyNode node2 = (PKIXPolicyNode)nodes.get(l);
if (!node2.hasChildren())
{
_validPolicyTree = CertPathValidatorUtilities.removePolicyNode(
_validPolicyTree, policyNodes, node2);
if (_validPolicyTree == null)
{
break;
}
}
}
}
}
}
}
}
}
return _validPolicyTree;
}
protected static void prepareNextCertA(
CertPath certPath,
int index)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
//
// (a) check the policy mappings
//
ASN1Sequence pm = null;
try
{
pm = DERSequence.getInstance(CertPathValidatorUtilities.getExtensionValue(cert,
RFC3280CertPathUtilities.POLICY_MAPPINGS));
}
catch (AnnotatedException ex)
{
throw new ExtCertPathValidatorException("Policy mappings extension could not be decoded.", ex, certPath,
index);
}
if (pm != null)
{
ASN1Sequence mappings = pm;
for (int j = 0; j < mappings.size(); j++)
{
DERObjectIdentifier issuerDomainPolicy = null;
DERObjectIdentifier subjectDomainPolicy = null;
try
{
ASN1Sequence mapping = DERSequence.getInstance(mappings.getObjectAt(j));
issuerDomainPolicy = DERObjectIdentifier.getInstance(mapping.getObjectAt(0));
subjectDomainPolicy = DERObjectIdentifier.getInstance(mapping.getObjectAt(1));
}
catch (Exception e)
{
throw new ExtCertPathValidatorException("Policy mappings extension contents could not be decoded.",
e, certPath, index);
}
if (RFC3280CertPathUtilities.ANY_POLICY.equals(issuerDomainPolicy.getId()))
{
throw new CertPathValidatorException("IssuerDomainPolicy is anyPolicy", null, certPath, index);
}
if (RFC3280CertPathUtilities.ANY_POLICY.equals(subjectDomainPolicy.getId()))
{
throw new CertPathValidatorException("SubjectDomainPolicy is anyPolicy,", null, certPath, index);
}
}
}
}
protected static void processCertF(
CertPath certPath,
int index,
PKIXPolicyNode validPolicyTree,
int explicitPolicy)
throws CertPathValidatorException
{
//
// (f)
//
if (explicitPolicy <= 0 && validPolicyTree == null)
{
throw new ExtCertPathValidatorException("No valid policy tree found when one expected.", null, certPath,
index);
}
}
protected static PKIXPolicyNode processCertE(
CertPath certPath,
int index,
PKIXPolicyNode validPolicyTree)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (e)
//
ASN1Sequence certPolicies = null;
try
{
certPolicies = DERSequence.getInstance(CertPathValidatorUtilities.getExtensionValue(cert,
RFC3280CertPathUtilities.CERTIFICATE_POLICIES));
}
catch (AnnotatedException e)
{
throw new ExtCertPathValidatorException("Could not read certificate policies extension from certificate.",
e, certPath, index);
}
if (certPolicies == null)
{
validPolicyTree = null;
}
return validPolicyTree;
}
protected static void processCertBC(
CertPath certPath,
int index,
PKIXNameConstraintValidator nameConstraintValidator)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
int n = certs.size();
// i as defined in the algorithm description
int i = n - index;
//
// (b), (c) permitted and excluded subtree checking.
//
if (!(CertPathValidatorUtilities.isSelfIssued(cert) && (i < n)))
{
X500Principal principal = CertPathValidatorUtilities.getSubjectPrincipal(cert);
ASN1InputStream aIn = new ASN1InputStream(principal.getEncoded());
ASN1Sequence dns;
try
{
dns = DERSequence.getInstance(aIn.readObject());
}
catch (Exception e)
{
throw new CertPathValidatorException("Exception extracting subject name when checking subtrees.", e,
certPath, index);
}
try
{
nameConstraintValidator.checkPermittedDN(dns);
nameConstraintValidator.checkExcludedDN(dns);
}
catch (PKIXNameConstraintValidatorException e)
{
throw new CertPathValidatorException("Subtree check for certificate subject failed.", e, certPath,
index);
}
GeneralNames altName = null;
try
{
altName = GeneralNames.getInstance(CertPathValidatorUtilities.getExtensionValue(cert,
RFC3280CertPathUtilities.SUBJECT_ALTERNATIVE_NAME));
}
catch (Exception e)
{
throw new CertPathValidatorException("Subject alternative name extension could not be decoded.", e,
certPath, index);
}
Vector emails = new X509Name(dns).getValues(X509Name.EmailAddress);
for (Enumeration e = emails.elements(); e.hasMoreElements();)
{
String email = (String)e.nextElement();
GeneralName emailAsGeneralName = new GeneralName(GeneralName.rfc822Name, email);
try
{
nameConstraintValidator.checkPermitted(emailAsGeneralName);
nameConstraintValidator.checkExcluded(emailAsGeneralName);
}
catch (PKIXNameConstraintValidatorException ex)
{
throw new CertPathValidatorException(
"Subtree check for certificate subject alternative email failed.", ex, certPath, index);
}
}
if (altName != null)
{
GeneralName[] genNames = null;
try
{
genNames = altName.getNames();
}
catch (Exception e)
{
throw new CertPathValidatorException("Subject alternative name contents could not be decoded.", e,
certPath, index);
}
for (int j = 0; j < genNames.length; j++)
{
try
{
nameConstraintValidator.checkPermitted(genNames[j]);
nameConstraintValidator.checkExcluded(genNames[j]);
}
catch (PKIXNameConstraintValidatorException e)
{
throw new CertPathValidatorException(
"Subtree check for certificate subject alternative name failed.", e, certPath, index);
}
}
}
}
}
protected static PKIXPolicyNode processCertD(
CertPath certPath,
int index,
Set acceptablePolicies,
PKIXPolicyNode validPolicyTree,
List[] policyNodes,
int inhibitAnyPolicy)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
int n = certs.size();
// i as defined in the algorithm description
int i = n - index;
//
// (d) policy Information checking against initial policy and
// policy mapping
//
ASN1Sequence certPolicies = null;
try
{
certPolicies = DERSequence.getInstance(CertPathValidatorUtilities.getExtensionValue(cert,
RFC3280CertPathUtilities.CERTIFICATE_POLICIES));
}
catch (AnnotatedException e)
{
throw new ExtCertPathValidatorException("Could not read certificate policies extension from certificate.",
e, certPath, index);
}
if (certPolicies != null && validPolicyTree != null)
{
//
// (d) (1)
//
Enumeration e = certPolicies.getObjects();
Set pols = new HashSet();
while (e.hasMoreElements())
{
PolicyInformation pInfo = PolicyInformation.getInstance(e.nextElement());
DERObjectIdentifier pOid = pInfo.getPolicyIdentifier();
pols.add(pOid.getId());
if (!RFC3280CertPathUtilities.ANY_POLICY.equals(pOid.getId()))
{
Set pq = null;
try
{
pq = CertPathValidatorUtilities.getQualifierSet(pInfo.getPolicyQualifiers());
}
catch (CertPathValidatorException ex)
{
throw new ExtCertPathValidatorException("Policy qualifier info set could not be build.", ex,
certPath, index);
}
boolean match = CertPathValidatorUtilities.processCertD1i(i, policyNodes, pOid, pq);
if (!match)
{
CertPathValidatorUtilities.processCertD1ii(i, policyNodes, pOid, pq);
}
}
}
if (acceptablePolicies.isEmpty() || acceptablePolicies.contains(RFC3280CertPathUtilities.ANY_POLICY))
{
acceptablePolicies.clear();
acceptablePolicies.addAll(pols);
}
else
{
Iterator it = acceptablePolicies.iterator();
Set t1 = new HashSet();
while (it.hasNext())
{
Object o = it.next();
if (pols.contains(o))
{
t1.add(o);
}
}
acceptablePolicies.clear();
acceptablePolicies.addAll(t1);
}
//
// (d) (2)
//
if ((inhibitAnyPolicy > 0) || ((i < n) && CertPathValidatorUtilities.isSelfIssued(cert)))
{
e = certPolicies.getObjects();
while (e.hasMoreElements())
{
PolicyInformation pInfo = PolicyInformation.getInstance(e.nextElement());
if (RFC3280CertPathUtilities.ANY_POLICY.equals(pInfo.getPolicyIdentifier().getId()))
{
Set _apq = CertPathValidatorUtilities.getQualifierSet(pInfo.getPolicyQualifiers());
List _nodes = policyNodes[i - 1];
for (int k = 0; k < _nodes.size(); k++)
{
PKIXPolicyNode _node = (PKIXPolicyNode)_nodes.get(k);
Iterator _policySetIter = _node.getExpectedPolicies().iterator();
while (_policySetIter.hasNext())
{
Object _tmp = _policySetIter.next();
String _policy;
if (_tmp instanceof String)
{
_policy = (String)_tmp;
}
else if (_tmp instanceof DERObjectIdentifier)
{
_policy = ((DERObjectIdentifier)_tmp).getId();
}
else
{
continue;
}
boolean _found = false;
Iterator _childrenIter = _node.getChildren();
while (_childrenIter.hasNext())
{
PKIXPolicyNode _child = (PKIXPolicyNode)_childrenIter.next();
if (_policy.equals(_child.getValidPolicy()))
{
_found = true;
}
}
if (!_found)
{
Set _newChildExpectedPolicies = new HashSet();
_newChildExpectedPolicies.add(_policy);
PKIXPolicyNode _newChild = new PKIXPolicyNode(new ArrayList(), i,
_newChildExpectedPolicies, _node, _apq, _policy, false);
_node.addChild(_newChild);
policyNodes[i].add(_newChild);
}
}
}
break;
}
}
}
PKIXPolicyNode _validPolicyTree = validPolicyTree;
//
// (d) (3)
//
for (int j = (i - 1); j >= 0; j--)
{
List nodes = policyNodes[j];
for (int k = 0; k < nodes.size(); k++)
{
PKIXPolicyNode node = (PKIXPolicyNode)nodes.get(k);
if (!node.hasChildren())
{
_validPolicyTree = CertPathValidatorUtilities.removePolicyNode(_validPolicyTree, policyNodes,
node);
if (_validPolicyTree == null)
{
break;
}
}
}
}
//
// d (4)
//
Set criticalExtensionOids = cert.getCriticalExtensionOIDs();
if (criticalExtensionOids != null)
{
boolean critical = criticalExtensionOids.contains(RFC3280CertPathUtilities.CERTIFICATE_POLICIES);
List nodes = policyNodes[i];
for (int j = 0; j < nodes.size(); j++)
{
PKIXPolicyNode node = (PKIXPolicyNode)nodes.get(j);
node.setCritical(critical);
}
}
return _validPolicyTree;
}
return null;
}
protected static void processCertA(
CertPath certPath,
ExtendedPKIXParameters paramsPKIX,
int index,
PublicKey workingPublicKey,
boolean verificationAlreadyPerformed,
X500Principal workingIssuerName,
X509Certificate sign)
throws ExtCertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (a) verify
//
if (!verificationAlreadyPerformed)
{
try
{
// (a) (1)
//
CertPathValidatorUtilities.verifyX509Certificate(cert, workingPublicKey,
paramsPKIX.getSigProvider());
}
catch (GeneralSecurityException e)
{
throw new ExtCertPathValidatorException("Could not validate certificate signature.", e, certPath, index);
}
}
try
{
// (a) (2)
//
cert.checkValidity(CertPathValidatorUtilities
.getValidCertDateFromValidityModel(paramsPKIX, certPath, index));
}
catch (CertificateExpiredException e)
{
throw new ExtCertPathValidatorException("Could not validate certificate: " + e.getMessage(), e, certPath, index);
}
catch (CertificateNotYetValidException e)
{
throw new ExtCertPathValidatorException("Could not validate certificate: " + e.getMessage(), e, certPath, index);
}
catch (AnnotatedException e)
{
throw new ExtCertPathValidatorException("Could not validate time of certificate.", e, certPath, index);
}
//
// (a) (3)
//
if (paramsPKIX.isRevocationEnabled())
{
try
{
checkCRLs(paramsPKIX, cert, CertPathValidatorUtilities.getValidCertDateFromValidityModel(paramsPKIX,
certPath, index), sign, workingPublicKey, certs);
}
catch (AnnotatedException e)
{
Throwable cause = e;
if (null != e.getCause())
{
cause = e.getCause();
}
throw new ExtCertPathValidatorException(e.getMessage(), cause, certPath, index);
}
}
//
// (a) (4) name chaining
//
if (!CertPathValidatorUtilities.getEncodedIssuerPrincipal(cert).equals(workingIssuerName))
{
throw new ExtCertPathValidatorException("IssuerName(" + CertPathValidatorUtilities.getEncodedIssuerPrincipal(cert)
+ ") does not match SubjectName(" + workingIssuerName + ") of signing certificate.", null,
certPath, index);
}
}
protected static int prepareNextCertI1(
CertPath certPath,
int index,
int explicitPolicy)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (i)
//
ASN1Sequence pc = null;
try
{
pc = DERSequence.getInstance(CertPathValidatorUtilities.getExtensionValue(cert,
RFC3280CertPathUtilities.POLICY_CONSTRAINTS));
}
catch (Exception e)
{
throw new ExtCertPathValidatorException("Policy constraints extension cannot be decoded.", e, certPath,
index);
}
int tmpInt;
if (pc != null)
{
Enumeration policyConstraints = pc.getObjects();
while (policyConstraints.hasMoreElements())
{
try
{
ASN1TaggedObject constraint = ASN1TaggedObject.getInstance(policyConstraints.nextElement());
if (constraint.getTagNo() == 0)
{
tmpInt = DERInteger.getInstance(constraint, false).getValue().intValue();
if (tmpInt < explicitPolicy)
{
return tmpInt;
}
break;
}
}
catch (IllegalArgumentException e)
{
throw new ExtCertPathValidatorException("Policy constraints extension contents cannot be decoded.",
e, certPath, index);
}
}
}
return explicitPolicy;
}
protected static int prepareNextCertI2(
CertPath certPath,
int index,
int policyMapping)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (i)
//
ASN1Sequence pc = null;
try
{
pc = DERSequence.getInstance(CertPathValidatorUtilities.getExtensionValue(cert,
RFC3280CertPathUtilities.POLICY_CONSTRAINTS));
}
catch (Exception e)
{
throw new ExtCertPathValidatorException("Policy constraints extension cannot be decoded.", e, certPath,
index);
}
int tmpInt;
if (pc != null)
{
Enumeration policyConstraints = pc.getObjects();
while (policyConstraints.hasMoreElements())
{
try
{
ASN1TaggedObject constraint = ASN1TaggedObject.getInstance(policyConstraints.nextElement());
if (constraint.getTagNo() == 1)
{
tmpInt = DERInteger.getInstance(constraint, false).getValue().intValue();
if (tmpInt < policyMapping)
{
return tmpInt;
}
break;
}
}
catch (IllegalArgumentException e)
{
throw new ExtCertPathValidatorException("Policy constraints extension contents cannot be decoded.",
e, certPath, index);
}
}
}
return policyMapping;
}
protected static void prepareNextCertG(
CertPath certPath,
int index,
PKIXNameConstraintValidator nameConstraintValidator)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (g) handle the name constraints extension
//
NameConstraints nc = null;
try
{
ASN1Sequence ncSeq = DERSequence.getInstance(CertPathValidatorUtilities.getExtensionValue(cert,
RFC3280CertPathUtilities.NAME_CONSTRAINTS));
if (ncSeq != null)
{
nc = NameConstraints.getInstance(ncSeq);
}
}
catch (Exception e)
{
throw new ExtCertPathValidatorException("Name constraints extension could not be decoded.", e, certPath,
index);
}
if (nc != null)
{
//
// (g) (1) permitted subtrees
//
GeneralSubtree[] permitted = nc.getPermittedSubtrees();
if (permitted != null)
{
try
{
nameConstraintValidator.intersectPermittedSubtree(permitted);
}
catch (Exception ex)
{
throw new ExtCertPathValidatorException(
"Permitted subtrees cannot be build from name constraints extension.", ex, certPath, index);
}
}
//
// (g) (2) excluded subtrees
//
GeneralSubtree[] excluded = nc.getExcludedSubtrees();
if (excluded != null)
{
for (int i = 0; i != excluded.length; i++)
try
{
nameConstraintValidator.addExcludedSubtree(excluded[i]);
}
catch (Exception ex)
{
throw new ExtCertPathValidatorException(
"Excluded subtrees cannot be build from name constraints extension.", ex, certPath, index);
}
}
}
}
/**
* Checks a distribution point for revocation information for the
* certificate <code>cert</code>.
*
* @param dp The distribution point to consider.
* @param paramsPKIX PKIX parameters.
* @param cert Certificate to check if it is revoked.
* @param validDate The date when the certificate revocation status should be
* checked.
* @param defaultCRLSignCert The issuer certificate of the certificate <code>cert</code>.
* @param defaultCRLSignKey The public key of the issuer certificate
* <code>defaultCRLSignCert</code>.
* @param certStatus The current certificate revocation status.
* @param reasonMask The reasons mask which is already checked.
* @param certPathCerts The certificates of the certification path.
* @throws AnnotatedException if the certificate is revoked or the status cannot be checked
* or some error occurs.
*/
private static void checkCRL(
DistributionPoint dp,
ExtendedPKIXParameters paramsPKIX,
X509Certificate cert,
Date validDate,
X509Certificate defaultCRLSignCert,
PublicKey defaultCRLSignKey,
CertStatus certStatus,
ReasonsMask reasonMask,
List certPathCerts)
throws AnnotatedException
{
Date currentDate = new Date(System.currentTimeMillis());
if (validDate.getTime() > currentDate.getTime())
{
throw new AnnotatedException("Validation time is in future.");
}
// (a)
/*
* We always get timely valid CRLs, so there is no step (a) (1).
* "locally cached" CRLs are assumed to be in getStore(), additional
* CRLs must be enabled in the ExtendedPKIXParameters and are in
* getAdditionalStore()
*/
Set crls = CertPathValidatorUtilities.getCompleteCRLs(dp, cert, currentDate, paramsPKIX);
boolean validCrlFound = false;
AnnotatedException lastException = null;
Iterator crl_iter = crls.iterator();
while (crl_iter.hasNext() && certStatus.getCertStatus() == CertStatus.UNREVOKED && !reasonMask.isAllReasons())
{
try
{
X509CRL crl = (X509CRL)crl_iter.next();
// (d)
ReasonsMask interimReasonsMask = RFC3280CertPathUtilities.processCRLD(crl, dp);
// (e)
/*
* The reasons mask is updated at the end, so only valid CRLs
* can update it. If this CRL does not contain new reasons it
* must be ignored.
*/
if (!interimReasonsMask.hasNewReasons(reasonMask))
{
continue;
}
// (f)
Set keys = RFC3280CertPathUtilities.processCRLF(crl, cert, defaultCRLSignCert, defaultCRLSignKey,
paramsPKIX, certPathCerts);
// (g)
PublicKey key = RFC3280CertPathUtilities.processCRLG(crl, keys);
X509CRL deltaCRL = null;
if (paramsPKIX.isUseDeltasEnabled())
{
// get delta CRLs
Set deltaCRLs = CertPathValidatorUtilities.getDeltaCRLs(currentDate, paramsPKIX, crl);
// we only want one valid delta CRL
// (h)
deltaCRL = RFC3280CertPathUtilities.processCRLH(deltaCRLs, key);
}
/*
* CRL must be be valid at the current time, not the validation
* time. If a certificate is revoked with reason keyCompromise,
* cACompromise, it can be used for forgery, also for the past.
* This reason may not be contained in older CRLs.
*/
/*
* in the chain model signatures stay valid also after the
* certificate has been expired, so they do not have to be in
* the CRL validity time
*/
if (paramsPKIX.getValidityModel() != ExtendedPKIXParameters.CHAIN_VALIDITY_MODEL)
{
/*
* if a certificate has expired, but was revoked, it is not
* more in the CRL, so it would be regarded as valid if the
* first check is not done
*/
if (cert.getNotAfter().getTime() < crl.getThisUpdate().getTime())
{
throw new AnnotatedException("No valid CRL for current time found.");
}
}
RFC3280CertPathUtilities.processCRLB1(dp, cert, crl);
// (b) (2)
RFC3280CertPathUtilities.processCRLB2(dp, cert, crl);
// (c)
RFC3280CertPathUtilities.processCRLC(deltaCRL, crl, paramsPKIX);
// (i)
RFC3280CertPathUtilities.processCRLI(validDate, deltaCRL, cert, certStatus, paramsPKIX);
// (j)
RFC3280CertPathUtilities.processCRLJ(validDate, crl, cert, certStatus);
// (k)
if (certStatus.getCertStatus() == CRLReason.removeFromCRL)
{
certStatus.setCertStatus(CertStatus.UNREVOKED);
}
// update reasons mask
reasonMask.addReasons(interimReasonsMask);
Set criticalExtensions = crl.getCriticalExtensionOIDs();
if (criticalExtensions != null)
{
criticalExtensions = new HashSet(criticalExtensions);
criticalExtensions.remove(X509Extensions.IssuingDistributionPoint.getId());
criticalExtensions.remove(X509Extensions.DeltaCRLIndicator.getId());
if (!criticalExtensions.isEmpty())
{
throw new AnnotatedException("CRL contains unsupported critical extensions.");
}
}
if (deltaCRL != null)
{
criticalExtensions = deltaCRL.getCriticalExtensionOIDs();
if (criticalExtensions != null)
{
criticalExtensions = new HashSet(criticalExtensions);
criticalExtensions.remove(X509Extensions.IssuingDistributionPoint.getId());
criticalExtensions.remove(X509Extensions.DeltaCRLIndicator.getId());
if (!criticalExtensions.isEmpty())
{
throw new AnnotatedException("Delta CRL contains unsupported critical extension.");
}
}
}
validCrlFound = true;
}
catch (AnnotatedException e)
{
lastException = e;
}
}
if (!validCrlFound)
{
throw lastException;
}
}
/**
* Checks a certificate if it is revoked.
*
* @param paramsPKIX PKIX parameters.
* @param cert Certificate to check if it is revoked.
* @param validDate The date when the certificate revocation status should be
* checked.
* @param sign The issuer certificate of the certificate <code>cert</code>.
* @param workingPublicKey The public key of the issuer certificate <code>sign</code>.
* @param certPathCerts The certificates of the certification path.
* @throws AnnotatedException if the certificate is revoked or the status cannot be checked
* or some error occurs.
*/
protected static void checkCRLs(
ExtendedPKIXParameters paramsPKIX,
X509Certificate cert,
Date validDate,
X509Certificate sign,
PublicKey workingPublicKey,
List certPathCerts)
throws AnnotatedException
{
AnnotatedException lastException = null;
CRLDistPoint crldp = null;
try
{
crldp = CRLDistPoint.getInstance(CertPathValidatorUtilities.getExtensionValue(cert,
RFC3280CertPathUtilities.CRL_DISTRIBUTION_POINTS));
}
catch (Exception e)
{
throw new AnnotatedException("CRL distribution point extension could not be read.", e);
}
try
{
CertPathValidatorUtilities.addAdditionalStoresFromCRLDistributionPoint(crldp, paramsPKIX);
}
catch (AnnotatedException e)
{
throw new AnnotatedException(
"No additional CRL locations could be decoded from CRL distribution point extension.", e);
}
CertStatus certStatus = new CertStatus();
ReasonsMask reasonsMask = new ReasonsMask();
boolean validCrlFound = false;
// for each distribution point
if (crldp != null)
{
DistributionPoint dps[] = null;
try
{
dps = crldp.getDistributionPoints();
}
catch (Exception e)
{
throw new AnnotatedException("Distribution points could not be read.", e);
}
if (dps != null)
{
for (int i = 0; i < dps.length && certStatus.getCertStatus() == CertStatus.UNREVOKED && !reasonsMask.isAllReasons(); i++)
{
ExtendedPKIXParameters paramsPKIXClone = (ExtendedPKIXParameters)paramsPKIX.clone();
try
{
checkCRL(dps[i], paramsPKIXClone, cert, validDate, sign, workingPublicKey, certStatus, reasonsMask, certPathCerts);
validCrlFound = true;
}
catch (AnnotatedException e)
{
lastException = e;
}
}
}
}
/*
* If the revocation status has not been determined, repeat the process
* above with any available CRLs not specified in a distribution point
* but issued by the certificate issuer.
*/
if (certStatus.getCertStatus() == CertStatus.UNREVOKED && !reasonsMask.isAllReasons())
{
try
{
/*
* assume a DP with both the reasons and the cRLIssuer fields
* omitted and a distribution point name of the certificate
* issuer.
*/
ASN1Primitive issuer = null;
try
{
issuer = new ASN1InputStream(CertPathValidatorUtilities.getEncodedIssuerPrincipal(cert).getEncoded())
.readObject();
}
catch (Exception e)
{
throw new AnnotatedException("Issuer from certificate for CRL could not be reencoded.", e);
}
DistributionPoint dp = new DistributionPoint(new DistributionPointName(0, new GeneralNames(
new GeneralName(GeneralName.directoryName, issuer))), null, null);
ExtendedPKIXParameters paramsPKIXClone = (ExtendedPKIXParameters)paramsPKIX.clone();
checkCRL(dp, paramsPKIXClone, cert, validDate, sign, workingPublicKey, certStatus, reasonsMask,
certPathCerts);
validCrlFound = true;
}
catch (AnnotatedException e)
{
lastException = e;
}
}
if (!validCrlFound)
{
if (lastException instanceof AnnotatedException)
{
throw lastException;
}
throw new AnnotatedException("No valid CRL found.", lastException);
}
if (certStatus.getCertStatus() != CertStatus.UNREVOKED)
{
String message = "Certificate revocation after " + certStatus.getRevocationDate();
message += ", reason: " + crlReasons[certStatus.getCertStatus()];
throw new AnnotatedException(message);
}
if (!reasonsMask.isAllReasons() && certStatus.getCertStatus() == CertStatus.UNREVOKED)
{
certStatus.setCertStatus(CertStatus.UNDETERMINED);
}
if (certStatus.getCertStatus() == CertStatus.UNDETERMINED)
{
throw new AnnotatedException("Certificate status could not be determined.");
}
}
protected static int prepareNextCertJ(
CertPath certPath,
int index,
int inhibitAnyPolicy)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (j)
//
DERInteger iap = null;
try
{
iap = DERInteger.getInstance(CertPathValidatorUtilities.getExtensionValue(cert,
RFC3280CertPathUtilities.INHIBIT_ANY_POLICY));
}
catch (Exception e)
{
throw new ExtCertPathValidatorException("Inhibit any-policy extension cannot be decoded.", e, certPath,
index);
}
if (iap != null)
{
int _inhibitAnyPolicy = iap.getValue().intValue();
if (_inhibitAnyPolicy < inhibitAnyPolicy)
{
return _inhibitAnyPolicy;
}
}
return inhibitAnyPolicy;
}
protected static void prepareNextCertK(
CertPath certPath,
int index)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (k)
//
BasicConstraints bc = null;
try
{
bc = BasicConstraints.getInstance(CertPathValidatorUtilities.getExtensionValue(cert,
RFC3280CertPathUtilities.BASIC_CONSTRAINTS));
}
catch (Exception e)
{
throw new ExtCertPathValidatorException("Basic constraints extension cannot be decoded.", e, certPath,
index);
}
if (bc != null)
{
if (!(bc.isCA()))
{
throw new CertPathValidatorException("Not a CA certificate");
}
}
else
{
throw new CertPathValidatorException("Intermediate certificate lacks BasicConstraints");
}
}
protected static int prepareNextCertL(
CertPath certPath,
int index,
int maxPathLength)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (l)
//
if (!CertPathValidatorUtilities.isSelfIssued(cert))
{
if (maxPathLength <= 0)
{
throw new ExtCertPathValidatorException("Max path length not greater than zero", null, certPath, index);
}
return maxPathLength - 1;
}
return maxPathLength;
}
protected static int prepareNextCertM(
CertPath certPath,
int index,
int maxPathLength)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (m)
//
BasicConstraints bc = null;
try
{
bc = BasicConstraints.getInstance(CertPathValidatorUtilities.getExtensionValue(cert,
RFC3280CertPathUtilities.BASIC_CONSTRAINTS));
}
catch (Exception e)
{
throw new ExtCertPathValidatorException("Basic constraints extension cannot be decoded.", e, certPath,
index);
}
if (bc != null)
{
BigInteger _pathLengthConstraint = bc.getPathLenConstraint();
if (_pathLengthConstraint != null)
{
int _plc = _pathLengthConstraint.intValue();
if (_plc < maxPathLength)
{
return _plc;
}
}
}
return maxPathLength;
}
protected static void prepareNextCertN(
CertPath certPath,
int index)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (n)
//
boolean[] _usage = cert.getKeyUsage();
if ((_usage != null) && !_usage[RFC3280CertPathUtilities.KEY_CERT_SIGN])
{
throw new ExtCertPathValidatorException(
"Issuer certificate keyusage extension is critical and does not permit key signing.", null,
certPath, index);
}
}
protected static void prepareNextCertO(
CertPath certPath,
int index,
Set criticalExtensions,
List pathCheckers)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (o)
//
Iterator tmpIter;
tmpIter = pathCheckers.iterator();
while (tmpIter.hasNext())
{
try
{
((PKIXCertPathChecker)tmpIter.next()).check(cert, criticalExtensions);
}
catch (CertPathValidatorException e)
{
throw new CertPathValidatorException(e.getMessage(), e.getCause(), certPath, index);
}
}
if (!criticalExtensions.isEmpty())
{
throw new ExtCertPathValidatorException("Certificate has unsupported critical extension: " + criticalExtensions, null, certPath,
index);
}
}
protected static int prepareNextCertH1(
CertPath certPath,
int index,
int explicitPolicy)
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (h)
//
if (!CertPathValidatorUtilities.isSelfIssued(cert))
{
//
// (1)
//
if (explicitPolicy != 0)
{
return explicitPolicy - 1;
}
}
return explicitPolicy;
}
protected static int prepareNextCertH2(
CertPath certPath,
int index,
int policyMapping)
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (h)
//
if (!CertPathValidatorUtilities.isSelfIssued(cert))
{
//
// (2)
//
if (policyMapping != 0)
{
return policyMapping - 1;
}
}
return policyMapping;
}
protected static int prepareNextCertH3(
CertPath certPath,
int index,
int inhibitAnyPolicy)
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (h)
//
if (!CertPathValidatorUtilities.isSelfIssued(cert))
{
//
// (3)
//
if (inhibitAnyPolicy != 0)
{
return inhibitAnyPolicy - 1;
}
}
return inhibitAnyPolicy;
}
protected static final String[] crlReasons = new String[]
{
"unspecified",
"keyCompromise",
"cACompromise",
"affiliationChanged",
"superseded",
"cessationOfOperation",
"certificateHold",
"unknown",
"removeFromCRL",
"privilegeWithdrawn",
"aACompromise"};
protected static int wrapupCertA(
int explicitPolicy,
X509Certificate cert)
{
//
// (a)
//
if (!CertPathValidatorUtilities.isSelfIssued(cert) && (explicitPolicy != 0))
{
explicitPolicy--;
}
return explicitPolicy;
}
protected static int wrapupCertB(
CertPath certPath,
int index,
int explicitPolicy)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
//
// (b)
//
int tmpInt;
ASN1Sequence pc = null;
try
{
pc = DERSequence.getInstance(CertPathValidatorUtilities.getExtensionValue(cert,
RFC3280CertPathUtilities.POLICY_CONSTRAINTS));
}
catch (AnnotatedException e)
{
throw new ExtCertPathValidatorException("Policy constraints could not be decoded.", e, certPath, index);
}
if (pc != null)
{
Enumeration policyConstraints = pc.getObjects();
while (policyConstraints.hasMoreElements())
{
ASN1TaggedObject constraint = (ASN1TaggedObject)policyConstraints.nextElement();
switch (constraint.getTagNo())
{
case 0:
try
{
tmpInt = DERInteger.getInstance(constraint, false).getValue().intValue();
}
catch (Exception e)
{
throw new ExtCertPathValidatorException(
"Policy constraints requireExplicitPolicy field could not be decoded.", e, certPath,
index);
}
if (tmpInt == 0)
{
return 0;
}
break;
}
}
}
return explicitPolicy;
}
protected static void wrapupCertF(
CertPath certPath,
int index,
List pathCheckers,
Set criticalExtensions)
throws CertPathValidatorException
{
List certs = certPath.getCertificates();
X509Certificate cert = (X509Certificate)certs.get(index);
Iterator tmpIter;
tmpIter = pathCheckers.iterator();
while (tmpIter.hasNext())
{
try
{
((PKIXCertPathChecker)tmpIter.next()).check(cert, criticalExtensions);
}
catch (CertPathValidatorException e)
{
throw new ExtCertPathValidatorException("Additional certificate path checker failed.", e, certPath,
index);
}
}
if (!criticalExtensions.isEmpty())
{
throw new ExtCertPathValidatorException("Certificate has unsupported critical extension: " + criticalExtensions, null, certPath,
index);
}
}
protected static PKIXPolicyNode wrapupCertG(
CertPath certPath,
ExtendedPKIXParameters paramsPKIX,
Set userInitialPolicySet,
int index,
List[] policyNodes,
PKIXPolicyNode validPolicyTree,
Set acceptablePolicies)
throws CertPathValidatorException
{
int n = certPath.getCertificates().size();
//
// (g)
//
PKIXPolicyNode intersection;
//
// (g) (i)
//
if (validPolicyTree == null)
{
if (paramsPKIX.isExplicitPolicyRequired())
{
throw new ExtCertPathValidatorException("Explicit policy requested but none available.", null,
certPath, index);
}
intersection = null;
}
else if (CertPathValidatorUtilities.isAnyPolicy(userInitialPolicySet)) // (g)
// (ii)
{
if (paramsPKIX.isExplicitPolicyRequired())
{
if (acceptablePolicies.isEmpty())
{
throw new ExtCertPathValidatorException("Explicit policy requested but none available.", null,
certPath, index);
}
else
{
Set _validPolicyNodeSet = new HashSet();
for (int j = 0; j < policyNodes.length; j++)
{
List _nodeDepth = policyNodes[j];
for (int k = 0; k < _nodeDepth.size(); k++)
{
PKIXPolicyNode _node = (PKIXPolicyNode)_nodeDepth.get(k);
if (RFC3280CertPathUtilities.ANY_POLICY.equals(_node.getValidPolicy()))
{
Iterator _iter = _node.getChildren();
while (_iter.hasNext())
{
_validPolicyNodeSet.add(_iter.next());
}
}
}
}
Iterator _vpnsIter = _validPolicyNodeSet.iterator();
while (_vpnsIter.hasNext())
{
PKIXPolicyNode _node = (PKIXPolicyNode)_vpnsIter.next();
String _validPolicy = _node.getValidPolicy();
if (!acceptablePolicies.contains(_validPolicy))
{
// validPolicyTree =
// removePolicyNode(validPolicyTree, policyNodes,
// _node);
}
}
if (validPolicyTree != null)
{
for (int j = (n - 1); j >= 0; j--)
{
List nodes = policyNodes[j];
for (int k = 0; k < nodes.size(); k++)
{
PKIXPolicyNode node = (PKIXPolicyNode)nodes.get(k);
if (!node.hasChildren())
{
validPolicyTree = CertPathValidatorUtilities.removePolicyNode(validPolicyTree,
policyNodes, node);
}
}
}
}
}
}
intersection = validPolicyTree;
}
else
{
//
// (g) (iii)
//
// This implementation is not exactly same as the one described in
// RFC3280.
// However, as far as the validation result is concerned, both
// produce
// adequate result. The only difference is whether AnyPolicy is
// remain
// in the policy tree or not.
//
// (g) (iii) 1
//
Set _validPolicyNodeSet = new HashSet();
for (int j = 0; j < policyNodes.length; j++)
{
List _nodeDepth = policyNodes[j];
for (int k = 0; k < _nodeDepth.size(); k++)
{
PKIXPolicyNode _node = (PKIXPolicyNode)_nodeDepth.get(k);
if (RFC3280CertPathUtilities.ANY_POLICY.equals(_node.getValidPolicy()))
{
Iterator _iter = _node.getChildren();
while (_iter.hasNext())
{
PKIXPolicyNode _c_node = (PKIXPolicyNode)_iter.next();
if (!RFC3280CertPathUtilities.ANY_POLICY.equals(_c_node.getValidPolicy()))
{
_validPolicyNodeSet.add(_c_node);
}
}
}
}
}
//
// (g) (iii) 2
//
Iterator _vpnsIter = _validPolicyNodeSet.iterator();
while (_vpnsIter.hasNext())
{
PKIXPolicyNode _node = (PKIXPolicyNode)_vpnsIter.next();
String _validPolicy = _node.getValidPolicy();
if (!userInitialPolicySet.contains(_validPolicy))
{
validPolicyTree = CertPathValidatorUtilities.removePolicyNode(validPolicyTree, policyNodes, _node);
}
}
//
// (g) (iii) 4
//
if (validPolicyTree != null)
{
for (int j = (n - 1); j >= 0; j--)
{
List nodes = policyNodes[j];
for (int k = 0; k < nodes.size(); k++)
{
PKIXPolicyNode node = (PKIXPolicyNode)nodes.get(k);
if (!node.hasChildren())
{
validPolicyTree = CertPathValidatorUtilities.removePolicyNode(validPolicyTree, policyNodes,
node);
}
}
}
}
intersection = validPolicyTree;
}
return intersection;
}
}