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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.4.
package org.bouncycastle.x509;
import java.io.IOException;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.Principal;
import java.security.cert.CertSelector;
import java.security.cert.Certificate;
import java.security.cert.CertificateEncodingException;
import java.security.cert.CertificateParsingException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import javax.security.auth.x500.X500Principal;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.asn1.x509.GeneralName;
import org.bouncycastle.asn1.x509.GeneralNames;
import org.bouncycastle.asn1.x509.Holder;
import org.bouncycastle.asn1.x509.IssuerSerial;
import org.bouncycastle.asn1.x509.ObjectDigestInfo;
import org.bouncycastle.jce.PrincipalUtil;
import org.bouncycastle.jce.X509Principal;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.Selector;
/**
* The Holder object.
*
*
* Holder ::= SEQUENCE {
* baseCertificateID [0] IssuerSerial OPTIONAL,
* -- the issuer and serial number of
* -- the holder's Public Key Certificate
* entityName [1] GeneralNames OPTIONAL,
* -- the name of the claimant or role
* objectDigestInfo [2] ObjectDigestInfo OPTIONAL
* -- used to directly authenticate the holder,
* -- for example, an executable
* }
*
* @deprecated use org.bouncycastle.cert.AttributeCertificateHolder
*/
public class AttributeCertificateHolder
implements CertSelector, Selector
{
final Holder holder;
AttributeCertificateHolder(ASN1Sequence seq)
{
holder = Holder.getInstance(seq);
}
public AttributeCertificateHolder(X509Principal issuerName,
BigInteger serialNumber)
{
holder = new org.bouncycastle.asn1.x509.Holder(new IssuerSerial(
GeneralNames.getInstance(new DERSequence(new GeneralName(issuerName))),
new ASN1Integer(serialNumber)));
}
public AttributeCertificateHolder(X500Principal issuerName,
BigInteger serialNumber)
{
this(X509Util.convertPrincipal(issuerName), serialNumber);
}
public AttributeCertificateHolder(X509Certificate cert)
throws CertificateParsingException
{
X509Principal name;
try
{
name = PrincipalUtil.getIssuerX509Principal(cert);
}
catch (Exception e)
{
throw new CertificateParsingException(e.getMessage());
}
holder = new Holder(new IssuerSerial(generateGeneralNames(name),
new ASN1Integer(cert.getSerialNumber())));
}
public AttributeCertificateHolder(X509Principal principal)
{
holder = new Holder(generateGeneralNames(principal));
}
public AttributeCertificateHolder(X500Principal principal)
{
this(X509Util.convertPrincipal(principal));
}
/**
* Constructs a holder for v2 attribute certificates with a hash value for
* some type of object.
*
* digestedObjectType can be one of the following:
*
* - 0 - publicKey - A hash of the public key of the holder must be
* passed.
*
- 1 - publicKeyCert - A hash of the public key certificate of the
* holder must be passed.
*
- 2 - otherObjectDigest - A hash of some other object type must be
* passed.
otherObjectTypeID must not be empty.
*
*
* This cannot be used if a v1 attribute certificate is used.
*
* @param digestedObjectType The digest object type.
* @param digestAlgorithm The algorithm identifier for the hash.
* @param otherObjectTypeID The object type ID if
* digestedObjectType is
* otherObjectDigest.
* @param objectDigest The hash value.
*/
public AttributeCertificateHolder(int digestedObjectType,
String digestAlgorithm, String otherObjectTypeID, byte[] objectDigest)
{
holder = new Holder(new ObjectDigestInfo(digestedObjectType,
new ASN1ObjectIdentifier(otherObjectTypeID), new AlgorithmIdentifier(new ASN1ObjectIdentifier(digestAlgorithm)), Arrays
.clone(objectDigest)));
}
/**
* Returns the digest object type if an object digest info is used.
*
*
* - 0 - publicKey - A hash of the public key of the holder must be
* passed.
*
- 1 - publicKeyCert - A hash of the public key certificate of the
* holder must be passed.
*
- 2 - otherObjectDigest - A hash of some other object type must be
* passed.
otherObjectTypeID must not be empty.
*
*
* @return The digest object type or -1 if no object digest info is set.
*/
public int getDigestedObjectType()
{
if (holder.getObjectDigestInfo() != null)
{
return holder.getObjectDigestInfo().getDigestedObjectType()
.getValue().intValue();
}
return -1;
}
/**
* Returns the other object type ID if an object digest info is used.
*
* @return The other object type ID or null if no object
* digest info is set.
*/
public String getDigestAlgorithm()
{
if (holder.getObjectDigestInfo() != null)
{
return holder.getObjectDigestInfo().getDigestAlgorithm().getAlgorithm()
.getId();
}
return null;
}
/**
* Returns the hash if an object digest info is used.
*
* @return The hash or null if no object digest info is set.
*/
public byte[] getObjectDigest()
{
if (holder.getObjectDigestInfo() != null)
{
return holder.getObjectDigestInfo().getObjectDigest().getBytes();
}
return null;
}
/**
* Returns the digest algorithm ID if an object digest info is used.
*
* @return The digest algorithm ID or null if no object
* digest info is set.
*/
public String getOtherObjectTypeID()
{
if (holder.getObjectDigestInfo() != null)
{
holder.getObjectDigestInfo().getOtherObjectTypeID().getId();
}
return null;
}
private GeneralNames generateGeneralNames(X509Principal principal)
{
return GeneralNames.getInstance(new DERSequence(new GeneralName(principal)));
}
private boolean matchesDN(X509Principal subject, GeneralNames targets)
{
GeneralName[] names = targets.getNames();
for (int i = 0; i != names.length; i++)
{
GeneralName gn = names[i];
if (gn.getTagNo() == GeneralName.directoryName)
{
try
{
if (new X509Principal(((ASN1Encodable)gn.getName()).toASN1Primitive()
.getEncoded()).equals(subject))
{
return true;
}
}
catch (IOException e)
{
}
}
}
return false;
}
private Object[] getNames(GeneralName[] names)
{
List l = new ArrayList(names.length);
for (int i = 0; i != names.length; i++)
{
if (names[i].getTagNo() == GeneralName.directoryName)
{
try
{
l.add(new X500Principal(
((ASN1Encodable)names[i].getName()).toASN1Primitive().getEncoded()));
}
catch (IOException e)
{
throw new RuntimeException("badly formed Name object");
}
}
}
return l.toArray(new Object[l.size()]);
}
private Principal[] getPrincipals(GeneralNames names)
{
Object[] p = this.getNames(names.getNames());
List l = new ArrayList();
for (int i = 0; i != p.length; i++)
{
if (p[i] instanceof Principal)
{
l.add(p[i]);
}
}
return (Principal[])l.toArray(new Principal[l.size()]);
}
/**
* Return any principal objects inside the attribute certificate holder
* entity names field.
*
* @return an array of Principal objects (usually X500Principal), null if no
* entity names field is set.
*/
public Principal[] getEntityNames()
{
if (holder.getEntityName() != null)
{
return getPrincipals(holder.getEntityName());
}
return null;
}
/**
* Return the principals associated with the issuer attached to this holder
*
* @return an array of principals, null if no BaseCertificateID is set.
*/
public Principal[] getIssuer()
{
if (holder.getBaseCertificateID() != null)
{
return getPrincipals(holder.getBaseCertificateID().getIssuer());
}
return null;
}
/**
* Return the serial number associated with the issuer attached to this
* holder.
*
* @return the certificate serial number, null if no BaseCertificateID is
* set.
*/
public BigInteger getSerialNumber()
{
if (holder.getBaseCertificateID() != null)
{
return holder.getBaseCertificateID().getSerial().getValue();
}
return null;
}
public Object clone()
{
return new AttributeCertificateHolder((ASN1Sequence)holder
.toASN1Primitive());
}
public boolean match(Certificate cert)
{
if (!(cert instanceof X509Certificate))
{
return false;
}
X509Certificate x509Cert = (X509Certificate)cert;
try
{
if (holder.getBaseCertificateID() != null)
{
return holder.getBaseCertificateID().getSerial().getValue().equals(x509Cert.getSerialNumber())
&& matchesDN(PrincipalUtil.getIssuerX509Principal(x509Cert), holder.getBaseCertificateID().getIssuer());
}
if (holder.getEntityName() != null)
{
if (matchesDN(PrincipalUtil.getSubjectX509Principal(x509Cert),
holder.getEntityName()))
{
return true;
}
}
if (holder.getObjectDigestInfo() != null)
{
MessageDigest md = null;
try
{
md = MessageDigest.getInstance(getDigestAlgorithm(), "BC");
}
catch (Exception e)
{
return false;
}
switch (getDigestedObjectType())
{
case ObjectDigestInfo.publicKey:
// TODO: DSA Dss-parms
md.update(cert.getPublicKey().getEncoded());
break;
case ObjectDigestInfo.publicKeyCert:
md.update(cert.getEncoded());
break;
}
if (!Arrays.areEqual(md.digest(), getObjectDigest()))
{
return false;
}
}
}
catch (CertificateEncodingException e)
{
return false;
}
return false;
}
public boolean equals(Object obj)
{
if (obj == this)
{
return true;
}
if (!(obj instanceof AttributeCertificateHolder))
{
return false;
}
AttributeCertificateHolder other = (AttributeCertificateHolder)obj;
return this.holder.equals(other.holder);
}
public int hashCode()
{
return this.holder.hashCode();
}
public boolean match(Object obj)
{
if (!(obj instanceof X509Certificate))
{
return false;
}
return match((Certificate)obj);
}
}
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