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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 to JDK 1.8. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.
package org.bouncycastle.pkix.jcajce;
import java.io.IOException;
import java.math.BigInteger;
import java.security.KeyFactory;
import java.security.PublicKey;
import java.security.cert.CRLException;
import java.security.cert.CertPathValidatorException;
import java.security.cert.CertStore;
import java.security.cert.CertStoreException;
import java.security.cert.Certificate;
import java.security.cert.X509CRL;
import java.security.cert.X509CRLEntry;
import java.security.cert.X509CRLSelector;
import java.security.cert.X509Certificate;
import java.security.interfaces.DSAParams;
import java.security.interfaces.DSAPublicKey;
import java.security.spec.DSAPublicKeySpec;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.security.auth.x500.X500Principal;
import org.bouncycastle.asn1.ASN1Enumerated;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.x500.X500Name;
import org.bouncycastle.asn1.x500.style.RFC4519Style;
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.Extension;
import org.bouncycastle.asn1.x509.GeneralName;
import org.bouncycastle.asn1.x509.GeneralNames;
import org.bouncycastle.asn1.x509.IssuingDistributionPoint;
import org.bouncycastle.jcajce.PKIXCRLStore;
import org.bouncycastle.jcajce.PKIXCRLStoreSelector;
import org.bouncycastle.jcajce.PKIXCertStoreSelector;
import org.bouncycastle.jcajce.PKIXExtendedParameters;
import org.bouncycastle.jcajce.util.JcaJceHelper;
import org.bouncycastle.util.Selector;
import org.bouncycastle.util.Store;
import org.bouncycastle.util.StoreException;
class RevocationUtilities
{
protected static final String ISSUING_DISTRIBUTION_POINT = Extension.issuingDistributionPoint.getId();
protected static Date getValidityDate(PKIXExtendedParameters paramsPKIX, Date currentDate)
{
Date validityDate = paramsPKIX.getValidityDate();
return null == validityDate ? currentDate : validityDate;
}
/**
* Extract the value of the given extension, if it exists.
*
* @param ext
* The extension object.
* @param oid
* The object identifier to obtain.
* @throws AnnotatedException
* if the extension cannot be read.
*/
protected static ASN1Primitive getExtensionValue(java.security.cert.X509Extension ext, ASN1ObjectIdentifier oid)
throws AnnotatedException
{
byte[] bytes = ext.getExtensionValue(oid.getId());
return null == bytes ? null : getObject(oid, bytes);
}
private static ASN1Primitive getObject(ASN1ObjectIdentifier oid, byte[] ext) throws AnnotatedException
{
try
{
return ASN1Primitive.fromByteArray(ASN1OctetString.getInstance(ext).getOctets());
}
catch (Exception e)
{
throw new AnnotatedException("exception processing extension " + oid, e);
}
}
/**
* Add to a LinkedHashSet all certificates or attribute certificates found in the X509Store's
* that are matching the certSelect criteria.
*
* @param certs
* a {@link LinkedHashSet} to which the certificates will be added.
* @param certSelect
* a {@link Selector} object that will be used to select the certificates
* @param certStores
* a List containing only {@link Store} objects. These are used to search for
* certificates.
* @return a Collection of all found {@link X509Certificate} May be empty but never
* null.
*/
protected static void findCertificates(LinkedHashSet certs, PKIXCertStoreSelector certSelect, List certStores)
throws AnnotatedException
{
Iterator iter = certStores.iterator();
while (iter.hasNext())
{
Object obj = iter.next();
if (obj instanceof Store)
{
Store certStore = (Store)obj;
try
{
certs.addAll(certStore.getMatches(certSelect));
}
catch (StoreException e)
{
throw new AnnotatedException("Problem while picking certificates from X.509 store.", e);
}
}
else
{
CertStore certStore = (CertStore)obj;
try
{
certs.addAll(PKIXCertStoreSelector.getCertificates(certSelect, certStore));
}
catch (CertStoreException e)
{
throw new AnnotatedException("Problem while picking certificates from certificate store.", e);
}
}
}
}
static List getAdditionalStoresFromCRLDistributionPoint(CRLDistPoint crldp,
Map namedCRLStoreMap) throws AnnotatedException
{
if (crldp == null)
{
return Collections.emptyList();
}
DistributionPoint dps[];
try
{
dps = crldp.getDistributionPoints();
}
catch (Exception e)
{
throw new AnnotatedException("Distribution points could not be read.", e);
}
List stores = new ArrayList();
for (int i = 0; i < dps.length; i++)
{
DistributionPointName dpn = dps[i].getDistributionPoint();
// look for URIs in fullName
if (dpn != null && dpn.getType() == DistributionPointName.FULL_NAME)
{
GeneralName[] genNames = GeneralNames.getInstance(dpn.getName()).getNames();
for (int j = 0; j < genNames.length; j++)
{
PKIXCRLStore store = namedCRLStoreMap.get(genNames[j]);
if (store != null)
{
stores.add(store);
}
}
}
}
return stores;
}
/**
* Add the CRL issuers from the cRLIssuer field of the distribution point or
* from the certificate if not given to the issuer criterion of the
* selector.
*
* The issuerPrincipals are a collection with a single
* X500Name for X509Certificates.
*
* @param dp The distribution point.
* @param issuerPrincipals The issuers of the certificate or attribute
* certificate which contains the distribution point.
* @param selector The CRL selector.
* @throws AnnotatedException if an exception occurs while processing.
* @throws ClassCastException if issuerPrincipals does not
* contain only X500Names.
*/
protected static void getCRLIssuersFromDistributionPoint(DistributionPoint dp, Collection issuerPrincipals,
X509CRLSelector selector) throws AnnotatedException
{
List issuers = new ArrayList();
// indirect CRL
if (dp.getCRLIssuer() != null)
{
GeneralName genNames[] = dp.getCRLIssuer().getNames();
// look for a DN
for (int j = 0; j < genNames.length; j++)
{
if (genNames[j].getTagNo() == GeneralName.directoryName)
{
try
{
issuers.add(X500Name.getInstance(genNames[j].getName()));
}
catch (IllegalArgumentException e)
{
throw new AnnotatedException(
"CRL issuer information from distribution point cannot be decoded.", e);
}
}
}
}
else
{
/*
* certificate issuer is CRL issuer, distributionPoint field MUST be
* present.
*/
if (dp.getDistributionPoint() == null)
{
throw new AnnotatedException(
"CRL issuer is omitted from distribution point but no distributionPoint field present.");
}
// add and check issuer principals
for (Iterator it = issuerPrincipals.iterator(); it.hasNext(); )
{
issuers.add(it.next());
}
}
// TODO: is not found although this should correctly add the rel name. selector of Sun is buggy here or PKI test case is invalid
// distributionPoint
// if (dp.getDistributionPoint() != null)
// {
// // look for nameRelativeToCRLIssuer
// if (dp.getDistributionPoint().getType() == DistributionPointName.NAME_RELATIVE_TO_CRL_ISSUER)
// {
// // append fragment to issuer, only one
// // issuer can be there, if this is given
// if (issuers.size() != 1)
// {
// throw new AnnotatedException(
// "nameRelativeToCRLIssuer field is given but more than one CRL issuer is given.");
// }
// ASN1Encodable relName = dp.getDistributionPoint().getName();
// Iterator it = issuers.iterator();
// List issuersTemp = new ArrayList(issuers.size());
// while (it.hasNext())
// {
// Enumeration e = null;
// try
// {
// e = ASN1Sequence.getInstance(
// new ASN1InputStream(((X500Principal) it.next())
// .getEncoded()).readObject()).getObjects();
// }
// catch (IOException ex)
// {
// throw new AnnotatedException(
// "Cannot decode CRL issuer information.", ex);
// }
// ASN1EncodableVector v = new ASN1EncodableVector();
// while (e.hasMoreElements())
// {
// v.add((ASN1Encodable) e.nextElement());
// }
// v.add(relName);
// issuersTemp.add(new X500Principal(new DERSequence(v)
// .getDEREncoded()));
// }
// issuers.clear();
// issuers.addAll(issuersTemp);
// }
// }
Iterator it = issuers.iterator();
while (it.hasNext())
{
try
{
selector.addIssuerName(((X500Name)it.next()).getEncoded());
}
catch (IOException ex)
{
throw new AnnotatedException(
"Cannot decode CRL issuer information.", ex);
}
}
}
protected static void getCertStatus(Date validDate, X509CRL crl, Object cert, CertStatus certStatus)
throws AnnotatedException
{
boolean isIndirect;
try
{
isIndirect = isIndirectCRL(crl);
}
catch (CRLException exception)
{
throw new AnnotatedException("Failed check for indirect CRL.", exception);
}
X509Certificate x509Cert = (X509Certificate)cert;
X500Name x509CertIssuer = getIssuer(x509Cert);
if (!isIndirect)
{
X500Name crlIssuer = getIssuer(crl);
if (!x509CertIssuer.equals(crlIssuer))
{
return;
}
}
X509CRLEntry crl_entry = crl.getRevokedCertificate(x509Cert.getSerialNumber());
if (null == crl_entry)
{
return;
}
if (isIndirect)
{
X500Principal certificateIssuer = crl_entry.getCertificateIssuer();
X500Name expectedCertIssuer;
if (null == certificateIssuer)
{
expectedCertIssuer = getIssuer(crl);
}
else
{
expectedCertIssuer = getX500Name(certificateIssuer);
}
if (!x509CertIssuer.equals(expectedCertIssuer))
{
return;
}
}
int reasonCodeValue = CRLReason.unspecified;
if (crl_entry.hasExtensions())
{
try
{
ASN1Primitive extValue = RevocationUtilities.getExtensionValue(crl_entry, Extension.reasonCode);
ASN1Enumerated reasonCode = ASN1Enumerated.getInstance(extValue);
if (null != reasonCode)
{
reasonCodeValue = reasonCode.intValueExact();
}
}
catch (Exception e)
{
throw new AnnotatedException("Reason code CRL entry extension could not be decoded.", e);
}
}
Date revocationDate = crl_entry.getRevocationDate();
if (validDate.before(revocationDate))
{
switch (reasonCodeValue)
{
case CRLReason.unspecified:
case CRLReason.keyCompromise:
case CRLReason.cACompromise:
case CRLReason.aACompromise:
break;
default:
return;
}
}
// (i) or (j)
certStatus.setCertStatus(reasonCodeValue);
certStatus.setRevocationDate(revocationDate);
}
/**
* Fetches delta CRLs according to RFC 3280 section 5.2.4.
*
* @param validityDate
* The date for which the delta CRLs must be valid.
* @param completeCRL
* The complete CRL the delta CRL is for.
* @return A Set of X509CRLs with delta CRLs.
* @throws AnnotatedException
* if an exception occurs while picking the delta CRLs.
*/
protected static Set getDeltaCRLs(Date validityDate, X509CRL completeCRL, List certStores,
List pkixCrlStores) throws AnnotatedException
{
X509CRLSelector baseDeltaSelect = new X509CRLSelector();
// 5.2.4 (a)
try
{
baseDeltaSelect.addIssuerName(completeCRL.getIssuerX500Principal().getEncoded());
}
catch (IOException e)
{
throw new AnnotatedException("cannot extract issuer from CRL.", e);
}
BigInteger completeCRLNumber = null;
try
{
ASN1Primitive derObject = RevocationUtilities.getExtensionValue(completeCRL, Extension.cRLNumber);
if (derObject != null)
{
completeCRLNumber = ASN1Integer.getInstance(derObject).getPositiveValue();
}
}
catch (Exception e)
{
throw new AnnotatedException(
"cannot extract CRL number extension from CRL", e);
}
// 5.2.4 (b)
byte[] idp;
try
{
idp = completeCRL.getExtensionValue(ISSUING_DISTRIBUTION_POINT);
}
catch (Exception e)
{
throw new AnnotatedException("issuing distribution point extension value could not be read", e);
}
// 5.2.4 (d)
baseDeltaSelect.setMinCRLNumber(completeCRLNumber == null ? null : completeCRLNumber
.add(BigInteger.valueOf(1)));
PKIXCRLStoreSelector.Builder selBuilder = new PKIXCRLStoreSelector.Builder(baseDeltaSelect);
selBuilder.setIssuingDistributionPoint(idp);
selBuilder.setIssuingDistributionPointEnabled(true);
// 5.2.4 (c)
selBuilder.setMaxBaseCRLNumber(completeCRLNumber);
PKIXCRLStoreSelector deltaSelect = selBuilder.build();
// find delta CRLs
Set temp = PKIXCRLUtil.findCRLs(deltaSelect, validityDate, certStores, pkixCrlStores);
Set result = new HashSet();
for (Iterator it = temp.iterator(); it.hasNext(); )
{
X509CRL crl = (X509CRL)it.next();
if (isDeltaCRL(crl))
{
result.add(crl);
}
}
return result;
}
private static boolean isDeltaCRL(X509CRL crl)
{
Set critical = crl.getCriticalExtensionOIDs();
return null == critical ? false : critical.contains(RFC3280CertPathUtilities.DELTA_CRL_INDICATOR);
}
/**
* Fetches complete CRLs according to RFC 3280.
*
* @param dp
* The distribution point for which the complete CRL
* @param cert
* The X509Certificate for which the CRL should be searched.
* @return A Set of X509CRLs with complete CRLs.
* @throws AnnotatedException
* if an exception occurs while picking the CRLs or no CRLs are found.
*/
protected static Set getCompleteCRLs(DistributionPoint dp, Object cert, Date validityDate, List certStores, List crlStores)
throws AnnotatedException, CRLNotFoundException
{
X509CRLSelector baseCrlSelect = new X509CRLSelector();
try
{
Set issuers = new HashSet();
issuers.add(getIssuer((X509Certificate)cert));
RevocationUtilities.getCRLIssuersFromDistributionPoint(dp, issuers, baseCrlSelect);
}
catch (AnnotatedException e)
{
throw new AnnotatedException(
"Could not get issuer information from distribution point.", e);
}
if (cert instanceof X509Certificate)
{
baseCrlSelect.setCertificateChecking((X509Certificate)cert);
}
PKIXCRLStoreSelector crlSelect = new PKIXCRLStoreSelector.Builder(baseCrlSelect).setCompleteCRLEnabled(true).build();
Set crls = PKIXCRLUtil.findCRLs(crlSelect, validityDate, certStores, crlStores);
checkCRLsNotEmpty(crls, cert);
return crls;
}
/**
* Return the next working key inheriting DSA parameters if necessary.
*
* This methods inherits DSA parameters from the indexed certificate or
* previous certificates in the certificate chain to the returned
* PublicKey. The list is searched upwards, meaning the end
* certificate is at position 0 and previous certificates are following.
*
*
* If the indexed certificate does not contain a DSA key this method simply
* returns the public key. If the DSA key already contains DSA parameters
* the key is also only returned.
*
*
* @param certs The certification path.
* @param index The index of the certificate which contains the public key
* which should be extended with DSA parameters.
* @return The public key of the certificate in list position
* index extended with DSA parameters if applicable.
* @throws AnnotatedException if DSA parameters cannot be inherited.
*/
protected static PublicKey getNextWorkingKey(List certs, int index, JcaJceHelper helper)
throws CertPathValidatorException
{
Certificate cert = (Certificate)certs.get(index);
PublicKey pubKey = cert.getPublicKey();
if (!(pubKey instanceof DSAPublicKey))
{
return pubKey;
}
DSAPublicKey dsaPubKey = (DSAPublicKey)pubKey;
if (dsaPubKey.getParams() != null)
{
return dsaPubKey;
}
for (int i = index + 1; i < certs.size(); i++)
{
X509Certificate parentCert = (X509Certificate)certs.get(i);
pubKey = parentCert.getPublicKey();
if (!(pubKey instanceof DSAPublicKey))
{
throw new CertPathValidatorException(
"DSA parameters cannot be inherited from previous certificate.");
}
DSAPublicKey prevDSAPubKey = (DSAPublicKey)pubKey;
if (prevDSAPubKey.getParams() == null)
{
continue;
}
DSAParams dsaParams = prevDSAPubKey.getParams();
DSAPublicKeySpec dsaPubKeySpec = new DSAPublicKeySpec(
dsaPubKey.getY(), dsaParams.getP(), dsaParams.getQ(), dsaParams.getG());
try
{
KeyFactory keyFactory = helper.createKeyFactory("DSA");
return keyFactory.generatePublic(dsaPubKeySpec);
}
catch (Exception exception)
{
throw new RuntimeException(exception.getMessage());
}
}
throw new CertPathValidatorException("DSA parameters cannot be inherited from previous certificate.");
}
static void checkCRLsNotEmpty(Set crls, Object cert)
throws CRLNotFoundException
{
if (crls.isEmpty())
{
// if (cert instanceof X509AttributeCertificate)
// {
// X509AttributeCertificate aCert = (X509AttributeCertificate)cert;
//
// throw new NoCRLFoundException("No CRLs found for issuer \"" + aCert.getIssuer().getPrincipals()[0] + "\"");
// }
// else
{
X500Name certIssuer = getIssuer((X509Certificate)cert);
throw new CRLNotFoundException(
"No CRLs found for issuer \"" + RFC4519Style.INSTANCE.toString(certIssuer) + "\"");
}
}
}
public static boolean isIndirectCRL(X509CRL crl) throws CRLException
{
try
{
byte[] idp = crl.getExtensionValue(Extension.issuingDistributionPoint.getId());
return idp != null
&& IssuingDistributionPoint.getInstance(ASN1OctetString.getInstance(idp).getOctets()).isIndirectCRL();
}
catch (Exception e)
{
throw new CRLException("exception reading IssuingDistributionPoint", e);
}
}
private static X500Name getIssuer(X509Certificate cert)
{
return getX500Name(cert.getIssuerX500Principal());
}
private static X500Name getIssuer(X509CRL crl)
{
return getX500Name(crl.getIssuerX500Principal());
}
private static X500Name getX500Name(X500Principal principal)
{
return X500Name.getInstance(principal.getEncoded());
}
}
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