package org.bouncycastle.jce.provider;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.Principal;
import java.security.Provider;
import java.security.PublicKey;
import java.security.Security;
import java.security.Signature;
import java.security.SignatureException;
import java.security.cert.Certificate;
import java.security.cert.CertificateEncodingException;
import java.security.cert.CertificateException;
import java.security.cert.CertificateExpiredException;
import java.security.cert.CertificateNotYetValidException;
import java.security.cert.CertificateParsingException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.security.auth.x500.X500Principal;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1InputStream;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1OutputStream;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERBitString;
import org.bouncycastle.asn1.DEREncodable;
import org.bouncycastle.asn1.DERIA5String;
import org.bouncycastle.asn1.DERNull;
import org.bouncycastle.asn1.DERObjectIdentifier;
import org.bouncycastle.asn1.misc.MiscObjectIdentifiers;
import org.bouncycastle.asn1.misc.NetscapeCertType;
import org.bouncycastle.asn1.misc.NetscapeRevocationURL;
import org.bouncycastle.asn1.misc.VerisignCzagExtension;
import org.bouncycastle.asn1.util.ASN1Dump;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.asn1.x509.BasicConstraints;
import org.bouncycastle.asn1.x509.KeyUsage;
import org.bouncycastle.asn1.x509.X509CertificateStructure;
import org.bouncycastle.asn1.x509.X509Extension;
import org.bouncycastle.asn1.x509.X509Extensions;
import org.bouncycastle.jce.X509Principal;
import org.bouncycastle.jce.interfaces.PKCS12BagAttributeCarrier;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.encoders.Hex;
public class X509CertificateObject
extends X509Certificate
implements PKCS12BagAttributeCarrier
{
private X509CertificateStructure c;
private BasicConstraints basicConstraints;
private boolean[] keyUsage;
private boolean hashValueSet;
private int hashValue;
private PKCS12BagAttributeCarrier attrCarrier = new PKCS12BagAttributeCarrierImpl();
public X509CertificateObject(
X509CertificateStructure c)
throws CertificateParsingException
{
this.c = c;
try
{
byte[] bytes = this.getExtensionBytes("2.5.29.19");
if (bytes != null)
{
basicConstraints = BasicConstraints.getInstance(ASN1Object.fromByteArray(bytes));
}
}
catch (Exception e)
{
throw new CertificateParsingException("cannot construct BasicConstraints: " + e);
}
try
{
byte[] bytes = this.getExtensionBytes("2.5.29.15");
if (bytes != null)
{
DERBitString bits = DERBitString.getInstance(ASN1Object.fromByteArray(bytes));
bytes = bits.getBytes();
int length = (bytes.length * 8) - bits.getPadBits();
keyUsage = new boolean[(length < 9) ? 9 : length];
for (int i = 0; i != length; i++)
{
keyUsage[i] = (bytes[i / 8] & (0x80 >>> (i % 8))) != 0;
}
}
else
{
keyUsage = null;
}
}
catch (Exception e)
{
throw new CertificateParsingException("cannot construct KeyUsage: " + e);
}
}
public void checkValidity()
throws CertificateExpiredException, CertificateNotYetValidException
{
this.checkValidity(new Date());
}
public void checkValidity(
Date date)
throws CertificateExpiredException, CertificateNotYetValidException
{
if (date.getTime() > this.getNotAfter().getTime()) // for other VM compatibility
{
throw new CertificateExpiredException("certificate expired on " + c.getEndDate().getTime());
}
if (date.getTime() < this.getNotBefore().getTime())
{
throw new CertificateNotYetValidException("certificate not valid till " + c.getStartDate().getTime());
}
}
public int getVersion()
{
return c.getVersion();
}
public BigInteger getSerialNumber()
{
return c.getSerialNumber().getValue();
}
public Principal getIssuerDN()
{
return new X509Principal(c.getIssuer());
}
public X500Principal getIssuerX500Principal()
{
try
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
ASN1OutputStream aOut = new ASN1OutputStream(bOut);
aOut.writeObject(c.getIssuer());
return new X500Principal(bOut.toByteArray());
}
catch (IOException e)
{
throw new IllegalStateException("can't encode issuer DN");
}
}
public Principal getSubjectDN()
{
return new X509Principal(c.getSubject());
}
public X500Principal getSubjectX500Principal()
{
try
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
ASN1OutputStream aOut = new ASN1OutputStream(bOut);
aOut.writeObject(c.getSubject());
return new X500Principal(bOut.toByteArray());
}
catch (IOException e)
{
throw new IllegalStateException("can't encode issuer DN");
}
}
public Date getNotBefore()
{
return c.getStartDate().getDate();
}
public Date getNotAfter()
{
return c.getEndDate().getDate();
}
public byte[] getTBSCertificate()
throws CertificateEncodingException
{
try
{
return c.getTBSCertificate().getEncoded(ASN1Encodable.DER);
}
catch (IOException e)
{
throw new CertificateEncodingException(e.toString());
}
}
public byte[] getSignature()
{
return c.getSignature().getBytes();
}
/**
* return a more "meaningful" representation for the signature algorithm used in
* the certficate.
*/
public String getSigAlgName()
{
Provider prov = Security.getProvider(BouncyCastleProvider.PROVIDER_NAME);
if (prov != null)
{
String algName = prov.getProperty("Alg.Alias.Signature." + this.getSigAlgOID());
if (algName != null)
{
return algName;
}
}
Provider[] provs = Security.getProviders();
//
// search every provider looking for a real algorithm
//
for (int i = 0; i != provs.length; i++)
{
String algName = provs[i].getProperty("Alg.Alias.Signature." + this.getSigAlgOID());
if (algName != null)
{
return algName;
}
}
return this.getSigAlgOID();
}
/**
* return the object identifier for the signature.
*/
public String getSigAlgOID()
{
return c.getSignatureAlgorithm().getObjectId().getId();
}
/**
* return the signature parameters, or null if there aren't any.
*/
public byte[] getSigAlgParams()
{
if (c.getSignatureAlgorithm().getParameters() != null)
{
return c.getSignatureAlgorithm().getParameters().getDERObject().getDEREncoded();
}
else
{
return null;
}
}
public boolean[] getIssuerUniqueID()
{
DERBitString id = c.getTBSCertificate().getIssuerUniqueId();
if (id != null)
{
byte[] bytes = id.getBytes();
boolean[] boolId = new boolean[bytes.length * 8 - id.getPadBits()];
for (int i = 0; i != boolId.length; i++)
{
boolId[i] = (bytes[i / 8] & (0x80 >>> (i % 8))) != 0;
}
return boolId;
}
return null;
}
public boolean[] getSubjectUniqueID()
{
DERBitString id = c.getTBSCertificate().getSubjectUniqueId();
if (id != null)
{
byte[] bytes = id.getBytes();
boolean[] boolId = new boolean[bytes.length * 8 - id.getPadBits()];
for (int i = 0; i != boolId.length; i++)
{
boolId[i] = (bytes[i / 8] & (0x80 >>> (i % 8))) != 0;
}
return boolId;
}
return null;
}
public boolean[] getKeyUsage()
{
return keyUsage;
}
public List getExtendedKeyUsage()
throws CertificateParsingException
{
byte[] bytes = this.getExtensionBytes("2.5.29.37");
if (bytes != null)
{
try
{
ASN1InputStream dIn = new ASN1InputStream(bytes);
ASN1Sequence seq = (ASN1Sequence)dIn.readObject();
List list = new ArrayList();
for (int i = 0; i != seq.size(); i++)
{
list.add(((DERObjectIdentifier)seq.getObjectAt(i)).getId());
}
return Collections.unmodifiableList(list);
}
catch (Exception e)
{
throw new CertificateParsingException("error processing extended key usage extension");
}
}
return null;
}
public int getBasicConstraints()
{
if (basicConstraints != null)
{
if (basicConstraints.isCA())
{
if (basicConstraints.getPathLenConstraint() == null)
{
return Integer.MAX_VALUE;
}
else
{
return basicConstraints.getPathLenConstraint().intValue();
}
}
else
{
return -1;
}
}
return -1;
}
public Set getCriticalExtensionOIDs()
{
if (this.getVersion() == 3)
{
Set set = new HashSet();
X509Extensions extensions = c.getTBSCertificate().getExtensions();
if (extensions != null)
{
Enumeration e = extensions.oids();
while (e.hasMoreElements())
{
DERObjectIdentifier oid = (DERObjectIdentifier)e.nextElement();
X509Extension ext = extensions.getExtension(oid);
if (ext.isCritical())
{
set.add(oid.getId());
}
}
return set;
}
}
return null;
}
private byte[] getExtensionBytes(String oid)
{
X509Extensions exts = c.getTBSCertificate().getExtensions();
if (exts != null)
{
X509Extension ext = exts.getExtension(new DERObjectIdentifier(oid));
if (ext != null)
{
return ext.getValue().getOctets();
}
}
return null;
}
public byte[] getExtensionValue(String oid)
{
X509Extensions exts = c.getTBSCertificate().getExtensions();
if (exts != null)
{
X509Extension ext = exts.getExtension(new DERObjectIdentifier(oid));
if (ext != null)
{
try
{
return ext.getValue().getEncoded();
}
catch (Exception e)
{
throw new IllegalStateException("error parsing " + e.toString());
}
}
}
return null;
}
public Set getNonCriticalExtensionOIDs()
{
if (this.getVersion() == 3)
{
Set set = new HashSet();
X509Extensions extensions = c.getTBSCertificate().getExtensions();
if (extensions != null)
{
Enumeration e = extensions.oids();
while (e.hasMoreElements())
{
DERObjectIdentifier oid = (DERObjectIdentifier)e.nextElement();
X509Extension ext = extensions.getExtension(oid);
if (!ext.isCritical())
{
set.add(oid.getId());
}
}
return set;
}
}
return null;
}
public boolean hasUnsupportedCriticalExtension()
{
if (this.getVersion() == 3)
{
X509Extensions extensions = c.getTBSCertificate().getExtensions();
if (extensions != null)
{
Enumeration e = extensions.oids();
while (e.hasMoreElements())
{
DERObjectIdentifier oid = (DERObjectIdentifier)e.nextElement();
String oidId = oid.getId();
if (oidId.equals(RFC3280CertPathUtilities.KEY_USAGE)
|| oidId.equals(RFC3280CertPathUtilities.CERTIFICATE_POLICIES)
|| oidId.equals(RFC3280CertPathUtilities.POLICY_MAPPINGS)
|| oidId.equals(RFC3280CertPathUtilities.INHIBIT_ANY_POLICY)
|| oidId.equals(RFC3280CertPathUtilities.CRL_DISTRIBUTION_POINTS)
|| oidId.equals(RFC3280CertPathUtilities.ISSUING_DISTRIBUTION_POINT)
|| oidId.equals(RFC3280CertPathUtilities.DELTA_CRL_INDICATOR)
|| oidId.equals(RFC3280CertPathUtilities.POLICY_CONSTRAINTS)
|| oidId.equals(RFC3280CertPathUtilities.BASIC_CONSTRAINTS)
|| oidId.equals(RFC3280CertPathUtilities.SUBJECT_ALTERNATIVE_NAME)
|| oidId.equals(RFC3280CertPathUtilities.NAME_CONSTRAINTS))
{
continue;
}
X509Extension ext = extensions.getExtension(oid);
if (ext.isCritical())
{
return true;
}
}
}
}
return false;
}
public PublicKey getPublicKey()
{
return JDKKeyFactory.createPublicKeyFromPublicKeyInfo(c.getSubjectPublicKeyInfo());
}
public byte[] getEncoded()
throws CertificateEncodingException
{
try
{
return c.getEncoded(ASN1Encodable.DER);
}
catch (IOException e)
{
throw new CertificateEncodingException(e.toString());
}
}
public boolean equals(
Object o)
{
if (o == this)
{
return true;
}
if (!(o instanceof Certificate))
{
return false;
}
Certificate other = (Certificate)o;
try
{
byte[] b1 = this.getEncoded();
byte[] b2 = other.getEncoded();
return Arrays.areEqual(b1, b2);
}
catch (CertificateEncodingException e)
{
return false;
}
}
public synchronized int hashCode()
{
if (!hashValueSet)
{
hashValue = calculateHashCode();
hashValueSet = true;
}
return hashValue;
}
private int calculateHashCode()
{
try
{
int hashCode = 0;
byte[] certData = this.getEncoded();
for (int i = 1; i < certData.length; i++)
{
hashCode += certData[i] * i;
}
return hashCode;
}
catch (CertificateEncodingException e)
{
return 0;
}
}
public void setBagAttribute(
DERObjectIdentifier oid,
DEREncodable attribute)
{
attrCarrier.setBagAttribute(oid, attribute);
}
public DEREncodable getBagAttribute(
DERObjectIdentifier oid)
{
return attrCarrier.getBagAttribute(oid);
}
public Enumeration getBagAttributeKeys()
{
return attrCarrier.getBagAttributeKeys();
}
public String toString()
{
StringBuffer buf = new StringBuffer();
String nl = System.getProperty("line.separator");
buf.append(" [0] Version: ").append(this.getVersion()).append(nl);
buf.append(" SerialNumber: ").append(this.getSerialNumber()).append(nl);
buf.append(" IssuerDN: ").append(this.getIssuerDN()).append(nl);
buf.append(" Start Date: ").append(this.getNotBefore()).append(nl);
buf.append(" Final Date: ").append(this.getNotAfter()).append(nl);
buf.append(" SubjectDN: ").append(this.getSubjectDN()).append(nl);
buf.append(" Public Key: ").append(this.getPublicKey()).append(nl);
buf.append(" Signature Algorithm: ").append(this.getSigAlgName()).append(nl);
byte[] sig = this.getSignature();
buf.append(" Signature: ").append(new String(Hex.encode(sig, 0, 20))).append(nl);
for (int i = 20; i < sig.length; i += 20)
{
if (i < sig.length - 20)
{
buf.append(" ").append(new String(Hex.encode(sig, i, 20))).append(nl);
}
else
{
buf.append(" ").append(new String(Hex.encode(sig, i, sig.length - i))).append(nl);
}
}
X509Extensions extensions = c.getTBSCertificate().getExtensions();
if (extensions != null)
{
Enumeration e = extensions.oids();
if (e.hasMoreElements())
{
buf.append(" Extensions: \n");
}
while (e.hasMoreElements())
{
DERObjectIdentifier oid = (DERObjectIdentifier)e.nextElement();
X509Extension ext = extensions.getExtension(oid);
if (ext.getValue() != null)
{
byte[] octs = ext.getValue().getOctets();
ASN1InputStream dIn = new ASN1InputStream(octs);
buf.append(" critical(").append(ext.isCritical()).append(") ");
try
{
if (oid.equals(X509Extensions.BasicConstraints))
{
buf.append(new BasicConstraints((ASN1Sequence)dIn.readObject())).append(nl);
}
else if (oid.equals(X509Extensions.KeyUsage))
{
buf.append(new KeyUsage((DERBitString)dIn.readObject())).append(nl);
}
else if (oid.equals(MiscObjectIdentifiers.netscapeCertType))
{
buf.append(new NetscapeCertType((DERBitString)dIn.readObject())).append(nl);
}
else if (oid.equals(MiscObjectIdentifiers.netscapeRevocationURL))
{
buf.append(new NetscapeRevocationURL((DERIA5String)dIn.readObject())).append(nl);
}
else if (oid.equals(MiscObjectIdentifiers.verisignCzagExtension))
{
buf.append(new VerisignCzagExtension((DERIA5String)dIn.readObject())).append(nl);
}
else
{
buf.append(oid.getId());
buf.append(" value = ").append(ASN1Dump.dumpAsString(dIn.readObject())).append(nl);
//buf.append(" value = ").append("*****").append(nl);
}
}
catch (Exception ex)
{
buf.append(oid.getId());
// buf.append(" value = ").append(new String(Hex.encode(ext.getValue().getOctets()))).append(nl);
buf.append(" value = ").append("*****").append(nl);
}
}
else
{
buf.append(nl);
}
}
}
return buf.toString();
}
public final void verify(
PublicKey key)
throws CertificateException, NoSuchAlgorithmException,
InvalidKeyException, NoSuchProviderException, SignatureException
{
Signature signature;
String sigName = X509SignatureUtil.getSignatureName(c.getSignatureAlgorithm());
try
{
signature = Signature.getInstance(sigName, BouncyCastleProvider.PROVIDER_NAME);
}
catch (Exception e)
{
signature = Signature.getInstance(sigName);
}
checkSignature(key, signature);
}
public final void verify(
PublicKey key,
String sigProvider)
throws CertificateException, NoSuchAlgorithmException,
InvalidKeyException, NoSuchProviderException, SignatureException
{
String sigName = X509SignatureUtil.getSignatureName(c.getSignatureAlgorithm());
Signature signature = Signature.getInstance(sigName, sigProvider);
checkSignature(key, signature);
}
private void checkSignature(
PublicKey key,
Signature signature)
throws CertificateException, NoSuchAlgorithmException,
SignatureException, InvalidKeyException
{
if (!isAlgIdEqual(c.getSignatureAlgorithm(), c.getTBSCertificate().getSignature()))
{
throw new CertificateException("signature algorithm in TBS cert not same as outer cert");
}
DEREncodable params = c.getSignatureAlgorithm().getParameters();
// TODO This should go after the initVerify?
X509SignatureUtil.setSignatureParameters(signature, params);
signature.initVerify(key);
signature.update(this.getTBSCertificate());
if (!signature.verify(this.getSignature()))
{
throw new InvalidKeyException("Public key presented not for certificate signature");
}
}
private boolean isAlgIdEqual(AlgorithmIdentifier id1, AlgorithmIdentifier id2)
{
if (!id1.getObjectId().equals(id2.getObjectId()))
{
return false;
}
if (id1.getParameters() == null)
{
if (id2.getParameters() != null && !id2.getParameters().equals(DERNull.INSTANCE))
{
return false;
}
return true;
}
if (id2.getParameters() == null)
{
if (id1.getParameters() != null && !id1.getParameters().equals(DERNull.INSTANCE))
{
return false;
}
return true;
}
return id1.getParameters().equals(id2.getParameters());
}
}