Java example source code file (X509CRLImpl.java)
The X509CRLImpl.java Java example source code
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package sun.security.x509;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.security.Principal;
import java.security.PublicKey;
import java.security.PrivateKey;
import java.security.Provider;
import java.security.Signature;
import java.security.NoSuchAlgorithmException;
import java.security.InvalidKeyException;
import java.security.NoSuchProviderException;
import java.security.SignatureException;
import java.security.cert.Certificate;
import java.security.cert.X509CRL;
import java.security.cert.X509Certificate;
import java.security.cert.X509CRLEntry;
import java.security.cert.CRLException;
import java.util.*;
import javax.security.auth.x500.X500Principal;
import sun.security.provider.X509Factory;
import sun.security.util.*;
import sun.misc.HexDumpEncoder;
/**
* <p>
* An implementation for X509 CRL (Certificate Revocation List).
* <p>
* The X.509 v2 CRL format is described below in ASN.1:
* <pre>
* CertificateList ::= SEQUENCE {
* tbsCertList TBSCertList,
* signatureAlgorithm AlgorithmIdentifier,
* signature BIT STRING }
* </pre>
* More information can be found in
* <a href="http://www.ietf.org/rfc/rfc3280.txt">RFC 3280: Internet X.509
* Public Key Infrastructure Certificate and CRL Profile</a>.
* <p>
* The ASN.1 definition of <code>tbsCertList is:
* <pre>
* TBSCertList ::= SEQUENCE {
* version Version OPTIONAL,
* -- if present, must be v2
* signature AlgorithmIdentifier,
* issuer Name,
* thisUpdate ChoiceOfTime,
* nextUpdate ChoiceOfTime OPTIONAL,
* revokedCertificates SEQUENCE OF SEQUENCE {
* userCertificate CertificateSerialNumber,
* revocationDate ChoiceOfTime,
* crlEntryExtensions Extensions OPTIONAL
* -- if present, must be v2
* } OPTIONAL,
* crlExtensions [0] EXPLICIT Extensions OPTIONAL
* -- if present, must be v2
* }
* </pre>
*
* @author Hemma Prafullchandra
* @see X509CRL
*/
public class X509CRLImpl extends X509CRL implements DerEncoder {
// CRL data, and its envelope
private byte[] signedCRL = null; // DER encoded crl
private byte[] signature = null; // raw signature bits
private byte[] tbsCertList = null; // DER encoded "to-be-signed" CRL
private AlgorithmId sigAlgId = null; // sig alg in CRL
// crl information
private int version;
private AlgorithmId infoSigAlgId; // sig alg in "to-be-signed" crl
private X500Name issuer = null;
private X500Principal issuerPrincipal = null;
private Date thisUpdate = null;
private Date nextUpdate = null;
private Map<X509IssuerSerial,X509CRLEntry> revokedMap = new TreeMap<>();
private List<X509CRLEntry> revokedList = new LinkedList<>();
private CRLExtensions extensions = null;
private final static boolean isExplicit = true;
private static final long YR_2050 = 2524636800000L;
private boolean readOnly = false;
/**
* PublicKey that has previously been used to successfully verify
* the signature of this CRL. Null if the CRL has not
* yet been verified (successfully).
*/
private PublicKey verifiedPublicKey;
/**
* If verifiedPublicKey is not null, name of the provider used to
* successfully verify the signature of this CRL, or the
* empty String if no provider was explicitly specified.
*/
private String verifiedProvider;
/**
* Not to be used. As it would lead to cases of uninitialized
* CRL objects.
*/
private X509CRLImpl() { }
/**
* Unmarshals an X.509 CRL from its encoded form, parsing the encoded
* bytes. This form of constructor is used by agents which
* need to examine and use CRL contents. Note that the buffer
* must include only one CRL, and no "garbage" may be left at
* the end.
*
* @param crlData the encoded bytes, with no trailing padding.
* @exception CRLException on parsing errors.
*/
public X509CRLImpl(byte[] crlData) throws CRLException {
try {
parse(new DerValue(crlData));
} catch (IOException e) {
signedCRL = null;
throw new CRLException("Parsing error: " + e.getMessage());
}
}
/**
* Unmarshals an X.509 CRL from an DER value.
*
* @param val a DER value holding at least one CRL
* @exception CRLException on parsing errors.
*/
public X509CRLImpl(DerValue val) throws CRLException {
try {
parse(val);
} catch (IOException e) {
signedCRL = null;
throw new CRLException("Parsing error: " + e.getMessage());
}
}
/**
* Unmarshals an X.509 CRL from an input stream. Only one CRL
* is expected at the end of the input stream.
*
* @param inStrm an input stream holding at least one CRL
* @exception CRLException on parsing errors.
*/
public X509CRLImpl(InputStream inStrm) throws CRLException {
try {
parse(new DerValue(inStrm));
} catch (IOException e) {
signedCRL = null;
throw new CRLException("Parsing error: " + e.getMessage());
}
}
/**
* Initial CRL constructor, no revoked certs, and no extensions.
*
* @param issuer the name of the CA issuing this CRL.
* @param thisUpdate the Date of this issue.
* @param nextUpdate the Date of the next CRL.
*/
public X509CRLImpl(X500Name issuer, Date thisDate, Date nextDate) {
this.issuer = issuer;
this.thisUpdate = thisDate;
this.nextUpdate = nextDate;
}
/**
* CRL constructor, revoked certs, no extensions.
*
* @param issuer the name of the CA issuing this CRL.
* @param thisUpdate the Date of this issue.
* @param nextUpdate the Date of the next CRL.
* @param badCerts the array of CRL entries.
*
* @exception CRLException on parsing/construction errors.
*/
public X509CRLImpl(X500Name issuer, Date thisDate, Date nextDate,
X509CRLEntry[] badCerts)
throws CRLException
{
this.issuer = issuer;
this.thisUpdate = thisDate;
this.nextUpdate = nextDate;
if (badCerts != null) {
X500Principal crlIssuer = getIssuerX500Principal();
X500Principal badCertIssuer = crlIssuer;
for (int i = 0; i < badCerts.length; i++) {
X509CRLEntryImpl badCert = (X509CRLEntryImpl)badCerts[i];
try {
badCertIssuer = getCertIssuer(badCert, badCertIssuer);
} catch (IOException ioe) {
throw new CRLException(ioe);
}
badCert.setCertificateIssuer(crlIssuer, badCertIssuer);
X509IssuerSerial issuerSerial = new X509IssuerSerial
(badCertIssuer, badCert.getSerialNumber());
this.revokedMap.put(issuerSerial, badCert);
this.revokedList.add(badCert);
if (badCert.hasExtensions()) {
this.version = 1;
}
}
}
}
/**
* CRL constructor, revoked certs and extensions.
*
* @param issuer the name of the CA issuing this CRL.
* @param thisUpdate the Date of this issue.
* @param nextUpdate the Date of the next CRL.
* @param badCerts the array of CRL entries.
* @param crlExts the CRL extensions.
*
* @exception CRLException on parsing/construction errors.
*/
public X509CRLImpl(X500Name issuer, Date thisDate, Date nextDate,
X509CRLEntry[] badCerts, CRLExtensions crlExts)
throws CRLException
{
this(issuer, thisDate, nextDate, badCerts);
if (crlExts != null) {
this.extensions = crlExts;
this.version = 1;
}
}
/**
* Returned the encoding as an uncloned byte array. Callers must
* guarantee that they neither modify it nor expose it to untrusted
* code.
*/
public byte[] getEncodedInternal() throws CRLException {
if (signedCRL == null) {
throw new CRLException("Null CRL to encode");
}
return signedCRL;
}
/**
* Returns the ASN.1 DER encoded form of this CRL.
*
* @exception CRLException if an encoding error occurs.
*/
public byte[] getEncoded() throws CRLException {
return getEncodedInternal().clone();
}
/**
* Encodes the "to-be-signed" CRL to the OutputStream.
*
* @param out the OutputStream to write to.
* @exception CRLException on encoding errors.
*/
public void encodeInfo(OutputStream out) throws CRLException {
try {
DerOutputStream tmp = new DerOutputStream();
DerOutputStream rCerts = new DerOutputStream();
DerOutputStream seq = new DerOutputStream();
if (version != 0) // v2 crl encode version
tmp.putInteger(version);
infoSigAlgId.encode(tmp);
if ((version == 0) && (issuer.toString() == null))
throw new CRLException("Null Issuer DN not allowed in v1 CRL");
issuer.encode(tmp);
if (thisUpdate.getTime() < YR_2050)
tmp.putUTCTime(thisUpdate);
else
tmp.putGeneralizedTime(thisUpdate);
if (nextUpdate != null) {
if (nextUpdate.getTime() < YR_2050)
tmp.putUTCTime(nextUpdate);
else
tmp.putGeneralizedTime(nextUpdate);
}
if (!revokedList.isEmpty()) {
for (X509CRLEntry entry : revokedList) {
((X509CRLEntryImpl)entry).encode(rCerts);
}
tmp.write(DerValue.tag_Sequence, rCerts);
}
if (extensions != null)
extensions.encode(tmp, isExplicit);
seq.write(DerValue.tag_Sequence, tmp);
tbsCertList = seq.toByteArray();
out.write(tbsCertList);
} catch (IOException e) {
throw new CRLException("Encoding error: " + e.getMessage());
}
}
/**
* Verifies that this CRL was signed using the
* private key that corresponds to the given public key.
*
* @param key the PublicKey used to carry out the verification.
*
* @exception NoSuchAlgorithmException on unsupported signature
* algorithms.
* @exception InvalidKeyException on incorrect key.
* @exception NoSuchProviderException if there's no default provider.
* @exception SignatureException on signature errors.
* @exception CRLException on encoding errors.
*/
public void verify(PublicKey key)
throws CRLException, NoSuchAlgorithmException, InvalidKeyException,
NoSuchProviderException, SignatureException {
verify(key, "");
}
/**
* Verifies that this CRL was signed using the
* private key that corresponds to the given public key,
* and that the signature verification was computed by
* the given provider.
*
* @param key the PublicKey used to carry out the verification.
* @param sigProvider the name of the signature provider.
*
* @exception NoSuchAlgorithmException on unsupported signature
* algorithms.
* @exception InvalidKeyException on incorrect key.
* @exception NoSuchProviderException on incorrect provider.
* @exception SignatureException on signature errors.
* @exception CRLException on encoding errors.
*/
public synchronized void verify(PublicKey key, String sigProvider)
throws CRLException, NoSuchAlgorithmException, InvalidKeyException,
NoSuchProviderException, SignatureException {
if (sigProvider == null) {
sigProvider = "";
}
if ((verifiedPublicKey != null) && verifiedPublicKey.equals(key)) {
// this CRL has already been successfully verified using
// this public key. Make sure providers match, too.
if (sigProvider.equals(verifiedProvider)) {
return;
}
}
if (signedCRL == null) {
throw new CRLException("Uninitialized CRL");
}
Signature sigVerf = null;
if (sigProvider.length() == 0) {
sigVerf = Signature.getInstance(sigAlgId.getName());
} else {
sigVerf = Signature.getInstance(sigAlgId.getName(), sigProvider);
}
sigVerf.initVerify(key);
if (tbsCertList == null) {
throw new CRLException("Uninitialized CRL");
}
sigVerf.update(tbsCertList, 0, tbsCertList.length);
if (!sigVerf.verify(signature)) {
throw new SignatureException("Signature does not match.");
}
verifiedPublicKey = key;
verifiedProvider = sigProvider;
}
/**
* Verifies that this CRL was signed using the
* private key that corresponds to the given public key,
* and that the signature verification was computed by
* the given provider. Note that the specified Provider object
* does not have to be registered in the provider list.
*
* @param key the PublicKey used to carry out the verification.
* @param sigProvider the signature provider.
*
* @exception NoSuchAlgorithmException on unsupported signature
* algorithms.
* @exception InvalidKeyException on incorrect key.
* @exception SignatureException on signature errors.
* @exception CRLException on encoding errors.
*/
public synchronized void verify(PublicKey key, Provider sigProvider)
throws CRLException, NoSuchAlgorithmException, InvalidKeyException,
SignatureException {
if (signedCRL == null) {
throw new CRLException("Uninitialized CRL");
}
Signature sigVerf = null;
if (sigProvider == null) {
sigVerf = Signature.getInstance(sigAlgId.getName());
} else {
sigVerf = Signature.getInstance(sigAlgId.getName(), sigProvider);
}
sigVerf.initVerify(key);
if (tbsCertList == null) {
throw new CRLException("Uninitialized CRL");
}
sigVerf.update(tbsCertList, 0, tbsCertList.length);
if (!sigVerf.verify(signature)) {
throw new SignatureException("Signature does not match.");
}
verifiedPublicKey = key;
}
/**
* This static method is the default implementation of the
* verify(PublicKey key, Provider sigProvider) method in X509CRL.
* Called from java.security.cert.X509CRL.verify(PublicKey key,
* Provider sigProvider)
*/
public static void verify(X509CRL crl, PublicKey key,
Provider sigProvider) throws CRLException,
NoSuchAlgorithmException, InvalidKeyException, SignatureException {
crl.verify(key, sigProvider);
}
/**
* Encodes an X.509 CRL, and signs it using the given key.
*
* @param key the private key used for signing.
* @param algorithm the name of the signature algorithm used.
*
* @exception NoSuchAlgorithmException on unsupported signature
* algorithms.
* @exception InvalidKeyException on incorrect key.
* @exception NoSuchProviderException on incorrect provider.
* @exception SignatureException on signature errors.
* @exception CRLException if any mandatory data was omitted.
*/
public void sign(PrivateKey key, String algorithm)
throws CRLException, NoSuchAlgorithmException, InvalidKeyException,
NoSuchProviderException, SignatureException {
sign(key, algorithm, null);
}
/**
* Encodes an X.509 CRL, and signs it using the given key.
*
* @param key the private key used for signing.
* @param algorithm the name of the signature algorithm used.
* @param provider the name of the provider.
*
* @exception NoSuchAlgorithmException on unsupported signature
* algorithms.
* @exception InvalidKeyException on incorrect key.
* @exception NoSuchProviderException on incorrect provider.
* @exception SignatureException on signature errors.
* @exception CRLException if any mandatory data was omitted.
*/
public void sign(PrivateKey key, String algorithm, String provider)
throws CRLException, NoSuchAlgorithmException, InvalidKeyException,
NoSuchProviderException, SignatureException {
try {
if (readOnly)
throw new CRLException("cannot over-write existing CRL");
Signature sigEngine = null;
if ((provider == null) || (provider.length() == 0))
sigEngine = Signature.getInstance(algorithm);
else
sigEngine = Signature.getInstance(algorithm, provider);
sigEngine.initSign(key);
// in case the name is reset
sigAlgId = AlgorithmId.get(sigEngine.getAlgorithm());
infoSigAlgId = sigAlgId;
DerOutputStream out = new DerOutputStream();
DerOutputStream tmp = new DerOutputStream();
// encode crl info
encodeInfo(tmp);
// encode algorithm identifier
sigAlgId.encode(tmp);
// Create and encode the signature itself.
sigEngine.update(tbsCertList, 0, tbsCertList.length);
signature = sigEngine.sign();
tmp.putBitString(signature);
// Wrap the signed data in a SEQUENCE { data, algorithm, sig }
out.write(DerValue.tag_Sequence, tmp);
signedCRL = out.toByteArray();
readOnly = true;
} catch (IOException e) {
throw new CRLException("Error while encoding data: " +
e.getMessage());
}
}
/**
* Returns a printable string of this CRL.
*
* @return value of this CRL in a printable form.
*/
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append("X.509 CRL v" + (version+1) + "\n");
if (sigAlgId != null)
sb.append("Signature Algorithm: " + sigAlgId.toString() +
", OID=" + (sigAlgId.getOID()).toString() + "\n");
if (issuer != null)
sb.append("Issuer: " + issuer.toString() + "\n");
if (thisUpdate != null)
sb.append("\nThis Update: " + thisUpdate.toString() + "\n");
if (nextUpdate != null)
sb.append("Next Update: " + nextUpdate.toString() + "\n");
if (revokedList.isEmpty())
sb.append("\nNO certificates have been revoked\n");
else {
sb.append("\nRevoked Certificates: " + revokedList.size());
int i = 1;
for (X509CRLEntry entry: revokedList) {
sb.append("\n[" + i++ + "] " + entry.toString());
}
}
if (extensions != null) {
Collection<Extension> allExts = extensions.getAllExtensions();
Object[] objs = allExts.toArray();
sb.append("\nCRL Extensions: " + objs.length);
for (int i = 0; i < objs.length; i++) {
sb.append("\n[" + (i+1) + "]: ");
Extension ext = (Extension)objs[i];
try {
if (OIDMap.getClass(ext.getExtensionId()) == null) {
sb.append(ext.toString());
byte[] extValue = ext.getExtensionValue();
if (extValue != null) {
DerOutputStream out = new DerOutputStream();
out.putOctetString(extValue);
extValue = out.toByteArray();
HexDumpEncoder enc = new HexDumpEncoder();
sb.append("Extension unknown: "
+ "DER encoded OCTET string =\n"
+ enc.encodeBuffer(extValue) + "\n");
}
} else
sb.append(ext.toString()); // sub-class exists
} catch (Exception e) {
sb.append(", Error parsing this extension");
}
}
}
if (signature != null) {
HexDumpEncoder encoder = new HexDumpEncoder();
sb.append("\nSignature:\n" + encoder.encodeBuffer(signature)
+ "\n");
} else
sb.append("NOT signed yet\n");
return sb.toString();
}
/**
* Checks whether the given certificate is on this CRL.
*
* @param cert the certificate to check for.
* @return true if the given certificate is on this CRL,
* false otherwise.
*/
public boolean isRevoked(Certificate cert) {
if (revokedMap.isEmpty() || (!(cert instanceof X509Certificate))) {
return false;
}
X509Certificate xcert = (X509Certificate) cert;
X509IssuerSerial issuerSerial = new X509IssuerSerial(xcert);
return revokedMap.containsKey(issuerSerial);
}
/**
* Gets the version number from this CRL.
* The ASN.1 definition for this is:
* <pre>
* Version ::= INTEGER { v1(0), v2(1), v3(2) }
* -- v3 does not apply to CRLs but appears for consistency
* -- with definition of Version for certs
* </pre>
* @return the version number, i.e. 1 or 2.
*/
public int getVersion() {
return version+1;
}
/**
* Gets the issuer distinguished name from this CRL.
* The issuer name identifies the entity who has signed (and
* issued the CRL). The issuer name field contains an
* X.500 distinguished name (DN).
* The ASN.1 definition for this is:
* <pre>
* issuer Name
*
* Name ::= CHOICE { RDNSequence }
* RDNSequence ::= SEQUENCE OF RelativeDistinguishedName
* RelativeDistinguishedName ::=
* SET OF AttributeValueAssertion
*
* AttributeValueAssertion ::= SEQUENCE {
* AttributeType,
* AttributeValue }
* AttributeType ::= OBJECT IDENTIFIER
* AttributeValue ::= ANY
* </pre>
* The Name describes a hierarchical name composed of attributes,
* such as country name, and corresponding values, such as US.
* The type of the component AttributeValue is determined by the
* AttributeType; in general it will be a directoryString.
* A directoryString is usually one of PrintableString,
* TeletexString or UniversalString.
* @return the issuer name.
*/
public Principal getIssuerDN() {
return (Principal)issuer;
}
/**
* Return the issuer as X500Principal. Overrides method in X509CRL
* to provide a slightly more efficient version.
*/
public X500Principal getIssuerX500Principal() {
if (issuerPrincipal == null) {
issuerPrincipal = issuer.asX500Principal();
}
return issuerPrincipal;
}
/**
* Gets the thisUpdate date from the CRL.
* The ASN.1 definition for this is:
*
* @return the thisUpdate date from the CRL.
*/
public Date getThisUpdate() {
return (new Date(thisUpdate.getTime()));
}
/**
* Gets the nextUpdate date from the CRL.
*
* @return the nextUpdate date from the CRL, or null if
* not present.
*/
public Date getNextUpdate() {
if (nextUpdate == null)
return null;
return (new Date(nextUpdate.getTime()));
}
/**
* Gets the CRL entry with the given serial number from this CRL.
*
* @return the entry with the given serial number, or <code>null if
* no such entry exists in the CRL.
* @see X509CRLEntry
*/
public X509CRLEntry getRevokedCertificate(BigInteger serialNumber) {
if (revokedMap.isEmpty()) {
return null;
}
// assume this is a direct CRL entry (cert and CRL issuer are the same)
X509IssuerSerial issuerSerial = new X509IssuerSerial
(getIssuerX500Principal(), serialNumber);
return revokedMap.get(issuerSerial);
}
/**
* Gets the CRL entry for the given certificate.
*/
public X509CRLEntry getRevokedCertificate(X509Certificate cert) {
if (revokedMap.isEmpty()) {
return null;
}
X509IssuerSerial issuerSerial = new X509IssuerSerial(cert);
return revokedMap.get(issuerSerial);
}
/**
* Gets all the revoked certificates from the CRL.
* A Set of X509CRLEntry.
*
* @return all the revoked certificates or <code>null if there are
* none.
* @see X509CRLEntry
*/
public Set<X509CRLEntry> getRevokedCertificates() {
if (revokedList.isEmpty()) {
return null;
} else {
return new TreeSet<X509CRLEntry>(revokedList);
}
}
/**
* Gets the DER encoded CRL information, the
* <code>tbsCertList from this CRL.
* This can be used to verify the signature independently.
*
* @return the DER encoded CRL information.
* @exception CRLException on encoding errors.
*/
public byte[] getTBSCertList() throws CRLException {
if (tbsCertList == null)
throw new CRLException("Uninitialized CRL");
byte[] dup = new byte[tbsCertList.length];
System.arraycopy(tbsCertList, 0, dup, 0, dup.length);
return dup;
}
/**
* Gets the raw Signature bits from the CRL.
*
* @return the signature.
*/
public byte[] getSignature() {
if (signature == null)
return null;
byte[] dup = new byte[signature.length];
System.arraycopy(signature, 0, dup, 0, dup.length);
return dup;
}
/**
* Gets the signature algorithm name for the CRL
* signature algorithm. For example, the string "SHA1withDSA".
* The ASN.1 definition for this is:
* <pre>
* AlgorithmIdentifier ::= SEQUENCE {
* algorithm OBJECT IDENTIFIER,
* parameters ANY DEFINED BY algorithm OPTIONAL }
* -- contains a value of the type
* -- registered for use with the
* -- algorithm object identifier value
* </pre>
*
* @return the signature algorithm name.
*/
public String getSigAlgName() {
if (sigAlgId == null)
return null;
return sigAlgId.getName();
}
/**
* Gets the signature algorithm OID string from the CRL.
* An OID is represented by a set of positive whole number separated
* by ".", that means,<br>
* <positive whole number>.<positive whole number>.<...>
* For example, the string "1.2.840.10040.4.3" identifies the SHA-1
* with DSA signature algorithm defined in
* <a href="http://www.ietf.org/rfc/rfc3279.txt">RFC 3279: Algorithms and
* Identifiers for the Internet X.509 Public Key Infrastructure Certificate
* and CRL Profile</a>.
*
* @return the signature algorithm oid string.
*/
public String getSigAlgOID() {
if (sigAlgId == null)
return null;
ObjectIdentifier oid = sigAlgId.getOID();
return oid.toString();
}
/**
* Gets the DER encoded signature algorithm parameters from this
* CRL's signature algorithm. In most cases, the signature
* algorithm parameters are null, the parameters are usually
* supplied with the Public Key.
*
* @return the DER encoded signature algorithm parameters, or
* null if no parameters are present.
*/
public byte[] getSigAlgParams() {
if (sigAlgId == null)
return null;
try {
return sigAlgId.getEncodedParams();
} catch (IOException e) {
return null;
}
}
/**
* Gets the signature AlgorithmId from the CRL.
*
* @return the signature AlgorithmId
*/
public AlgorithmId getSigAlgId() {
return sigAlgId;
}
/**
* return the AuthorityKeyIdentifier, if any.
*
* @returns AuthorityKeyIdentifier or null
* (if no AuthorityKeyIdentifierExtension)
* @throws IOException on error
*/
public KeyIdentifier getAuthKeyId() throws IOException {
AuthorityKeyIdentifierExtension aki = getAuthKeyIdExtension();
if (aki != null) {
KeyIdentifier keyId = (KeyIdentifier)aki.get(
AuthorityKeyIdentifierExtension.KEY_ID);
return keyId;
} else {
return null;
}
}
/**
* return the AuthorityKeyIdentifierExtension, if any.
*
* @returns AuthorityKeyIdentifierExtension or null (if no such extension)
* @throws IOException on error
*/
public AuthorityKeyIdentifierExtension getAuthKeyIdExtension()
throws IOException {
Object obj = getExtension(PKIXExtensions.AuthorityKey_Id);
return (AuthorityKeyIdentifierExtension)obj;
}
/**
* return the CRLNumberExtension, if any.
*
* @returns CRLNumberExtension or null (if no such extension)
* @throws IOException on error
*/
public CRLNumberExtension getCRLNumberExtension() throws IOException {
Object obj = getExtension(PKIXExtensions.CRLNumber_Id);
return (CRLNumberExtension)obj;
}
/**
* return the CRL number from the CRLNumberExtension, if any.
*
* @returns number or null (if no such extension)
* @throws IOException on error
*/
public BigInteger getCRLNumber() throws IOException {
CRLNumberExtension numExt = getCRLNumberExtension();
if (numExt != null) {
BigInteger num = numExt.get(CRLNumberExtension.NUMBER);
return num;
} else {
return null;
}
}
/**
* return the DeltaCRLIndicatorExtension, if any.
*
* @returns DeltaCRLIndicatorExtension or null (if no such extension)
* @throws IOException on error
*/
public DeltaCRLIndicatorExtension getDeltaCRLIndicatorExtension()
throws IOException {
Object obj = getExtension(PKIXExtensions.DeltaCRLIndicator_Id);
return (DeltaCRLIndicatorExtension)obj;
}
/**
* return the base CRL number from the DeltaCRLIndicatorExtension, if any.
*
* @returns number or null (if no such extension)
* @throws IOException on error
*/
public BigInteger getBaseCRLNumber() throws IOException {
DeltaCRLIndicatorExtension dciExt = getDeltaCRLIndicatorExtension();
if (dciExt != null) {
BigInteger num = dciExt.get(DeltaCRLIndicatorExtension.NUMBER);
return num;
} else {
return null;
}
}
/**
* return the IssuerAlternativeNameExtension, if any.
*
* @returns IssuerAlternativeNameExtension or null (if no such extension)
* @throws IOException on error
*/
public IssuerAlternativeNameExtension getIssuerAltNameExtension()
throws IOException {
Object obj = getExtension(PKIXExtensions.IssuerAlternativeName_Id);
return (IssuerAlternativeNameExtension)obj;
}
/**
* return the IssuingDistributionPointExtension, if any.
*
* @returns IssuingDistributionPointExtension or null
* (if no such extension)
* @throws IOException on error
*/
public IssuingDistributionPointExtension
getIssuingDistributionPointExtension() throws IOException {
Object obj = getExtension(PKIXExtensions.IssuingDistributionPoint_Id);
return (IssuingDistributionPointExtension) obj;
}
/**
* Return true if a critical extension is found that is
* not supported, otherwise return false.
*/
public boolean hasUnsupportedCriticalExtension() {
if (extensions == null)
return false;
return extensions.hasUnsupportedCriticalExtension();
}
/**
* Gets a Set of the extension(s) marked CRITICAL in the
* CRL. In the returned set, each extension is represented by
* its OID string.
*
* @return a set of the extension oid strings in the
* CRL that are marked critical.
*/
public Set<String> getCriticalExtensionOIDs() {
if (extensions == null) {
return null;
}
Set<String> extSet = new TreeSet<>();
for (Extension ex : extensions.getAllExtensions()) {
if (ex.isCritical()) {
extSet.add(ex.getExtensionId().toString());
}
}
return extSet;
}
/**
* Gets a Set of the extension(s) marked NON-CRITICAL in the
* CRL. In the returned set, each extension is represented by
* its OID string.
*
* @return a set of the extension oid strings in the
* CRL that are NOT marked critical.
*/
public Set<String> getNonCriticalExtensionOIDs() {
if (extensions == null) {
return null;
}
Set<String> extSet = new TreeSet<>();
for (Extension ex : extensions.getAllExtensions()) {
if (!ex.isCritical()) {
extSet.add(ex.getExtensionId().toString());
}
}
return extSet;
}
/**
* Gets the DER encoded OCTET string for the extension value
* (<code>extnValue) identified by the passed in oid String.
* The <code>oid string is
* represented by a set of positive whole number separated
* by ".", that means,<br>
* <positive whole number>.<positive whole number>.<...>
*
* @param oid the Object Identifier value for the extension.
* @return the der encoded octet string of the extension value.
*/
public byte[] getExtensionValue(String oid) {
if (extensions == null)
return null;
try {
String extAlias = OIDMap.getName(new ObjectIdentifier(oid));
Extension crlExt = null;
if (extAlias == null) { // may be unknown
ObjectIdentifier findOID = new ObjectIdentifier(oid);
Extension ex = null;
ObjectIdentifier inCertOID;
for (Enumeration<Extension> e = extensions.getElements();
e.hasMoreElements();) {
ex = e.nextElement();
inCertOID = ex.getExtensionId();
if (inCertOID.equals((Object)findOID)) {
crlExt = ex;
break;
}
}
} else
crlExt = extensions.get(extAlias);
if (crlExt == null)
return null;
byte[] extData = crlExt.getExtensionValue();
if (extData == null)
return null;
DerOutputStream out = new DerOutputStream();
out.putOctetString(extData);
return out.toByteArray();
} catch (Exception e) {
return null;
}
}
/**
* get an extension
*
* @param oid ObjectIdentifier of extension desired
* @returns Object of type <extension> or null, if not found
* @throws IOException on error
*/
public Object getExtension(ObjectIdentifier oid) {
if (extensions == null)
return null;
// XXX Consider cloning this
return extensions.get(OIDMap.getName(oid));
}
/*
* Parses an X.509 CRL, should be used only by constructors.
*/
private void parse(DerValue val) throws CRLException, IOException {
// check if can over write the certificate
if (readOnly)
throw new CRLException("cannot over-write existing CRL");
if ( val.getData() == null || val.tag != DerValue.tag_Sequence)
throw new CRLException("Invalid DER-encoded CRL data");
signedCRL = val.toByteArray();
DerValue seq[] = new DerValue[3];
seq[0] = val.data.getDerValue();
seq[1] = val.data.getDerValue();
seq[2] = val.data.getDerValue();
if (val.data.available() != 0)
throw new CRLException("signed overrun, bytes = "
+ val.data.available());
if (seq[0].tag != DerValue.tag_Sequence)
throw new CRLException("signed CRL fields invalid");
sigAlgId = AlgorithmId.parse(seq[1]);
signature = seq[2].getBitString();
if (seq[1].data.available() != 0)
throw new CRLException("AlgorithmId field overrun");
if (seq[2].data.available() != 0)
throw new CRLException("Signature field overrun");
// the tbsCertsList
tbsCertList = seq[0].toByteArray();
// parse the information
DerInputStream derStrm = seq[0].data;
DerValue tmp;
byte nextByte;
// version (optional if v1)
version = 0; // by default, version = v1 == 0
nextByte = (byte)derStrm.peekByte();
if (nextByte == DerValue.tag_Integer) {
version = derStrm.getInteger();
if (version != 1) // i.e. v2
throw new CRLException("Invalid version");
}
tmp = derStrm.getDerValue();
// signature
AlgorithmId tmpId = AlgorithmId.parse(tmp);
// the "inner" and "outer" signature algorithms must match
if (! tmpId.equals(sigAlgId))
throw new CRLException("Signature algorithm mismatch");
infoSigAlgId = tmpId;
// issuer
issuer = new X500Name(derStrm);
if (issuer.isEmpty()) {
throw new CRLException("Empty issuer DN not allowed in X509CRLs");
}
// thisUpdate
// check if UTCTime encoded or GeneralizedTime
nextByte = (byte)derStrm.peekByte();
if (nextByte == DerValue.tag_UtcTime) {
thisUpdate = derStrm.getUTCTime();
} else if (nextByte == DerValue.tag_GeneralizedTime) {
thisUpdate = derStrm.getGeneralizedTime();
} else {
throw new CRLException("Invalid encoding for thisUpdate"
+ " (tag=" + nextByte + ")");
}
if (derStrm.available() == 0)
return; // done parsing no more optional fields present
// nextUpdate (optional)
nextByte = (byte)derStrm.peekByte();
if (nextByte == DerValue.tag_UtcTime) {
nextUpdate = derStrm.getUTCTime();
} else if (nextByte == DerValue.tag_GeneralizedTime) {
nextUpdate = derStrm.getGeneralizedTime();
} // else it is not present
if (derStrm.available() == 0)
return; // done parsing no more optional fields present
// revokedCertificates (optional)
nextByte = (byte)derStrm.peekByte();
if ((nextByte == DerValue.tag_SequenceOf)
&& (! ((nextByte & 0x0c0) == 0x080))) {
DerValue[] badCerts = derStrm.getSequence(4);
X500Principal crlIssuer = getIssuerX500Principal();
X500Principal badCertIssuer = crlIssuer;
for (int i = 0; i < badCerts.length; i++) {
X509CRLEntryImpl entry = new X509CRLEntryImpl(badCerts[i]);
badCertIssuer = getCertIssuer(entry, badCertIssuer);
entry.setCertificateIssuer(crlIssuer, badCertIssuer);
X509IssuerSerial issuerSerial = new X509IssuerSerial
(badCertIssuer, entry.getSerialNumber());
revokedMap.put(issuerSerial, entry);
revokedList.add(entry);
}
}
if (derStrm.available() == 0)
return; // done parsing no extensions
// crlExtensions (optional)
tmp = derStrm.getDerValue();
if (tmp.isConstructed() && tmp.isContextSpecific((byte)0)) {
extensions = new CRLExtensions(tmp.data);
}
readOnly = true;
}
/**
* Extract the issuer X500Principal from an X509CRL. Parses the encoded
* form of the CRL to preserve the principal's ASN.1 encoding.
*
* Called by java.security.cert.X509CRL.getIssuerX500Principal().
*/
public static X500Principal getIssuerX500Principal(X509CRL crl) {
try {
byte[] encoded = crl.getEncoded();
DerInputStream derIn = new DerInputStream(encoded);
DerValue tbsCert = derIn.getSequence(3)[0];
DerInputStream tbsIn = tbsCert.data;
DerValue tmp;
// skip version number if present
byte nextByte = (byte)tbsIn.peekByte();
if (nextByte == DerValue.tag_Integer) {
tmp = tbsIn.getDerValue();
}
tmp = tbsIn.getDerValue(); // skip signature
tmp = tbsIn.getDerValue(); // issuer
byte[] principalBytes = tmp.toByteArray();
return new X500Principal(principalBytes);
} catch (Exception e) {
throw new RuntimeException("Could not parse issuer", e);
}
}
/**
* Returned the encoding of the given certificate for internal use.
* Callers must guarantee that they neither modify it nor expose it
* to untrusted code. Uses getEncodedInternal() if the certificate
* is instance of X509CertImpl, getEncoded() otherwise.
*/
public static byte[] getEncodedInternal(X509CRL crl) throws CRLException {
if (crl instanceof X509CRLImpl) {
return ((X509CRLImpl)crl).getEncodedInternal();
} else {
return crl.getEncoded();
}
}
/**
* Utility method to convert an arbitrary instance of X509CRL
* to a X509CRLImpl. Does a cast if possible, otherwise reparses
* the encoding.
*/
public static X509CRLImpl toImpl(X509CRL crl)
throws CRLException {
if (crl instanceof X509CRLImpl) {
return (X509CRLImpl)crl;
} else {
return X509Factory.intern(crl);
}
}
/**
* Returns the X500 certificate issuer DN of a CRL entry.
*
* @param entry the entry to check
* @param prevCertIssuer the previous entry's certificate issuer
* @return the X500Principal in a CertificateIssuerExtension, or
* prevCertIssuer if it does not exist
*/
private X500Principal getCertIssuer(X509CRLEntryImpl entry,
X500Principal prevCertIssuer) throws IOException {
CertificateIssuerExtension ciExt =
entry.getCertificateIssuerExtension();
if (ciExt != null) {
GeneralNames names = ciExt.get(CertificateIssuerExtension.ISSUER);
X500Name issuerDN = (X500Name) names.get(0).getName();
return issuerDN.asX500Principal();
} else {
return prevCertIssuer;
}
}
@Override
public void derEncode(OutputStream out) throws IOException {
if (signedCRL == null)
throw new IOException("Null CRL to encode");
out.write(signedCRL.clone());
}
/**
* Immutable X.509 Certificate Issuer DN and serial number pair
*/
private final static class X509IssuerSerial
implements Comparable<X509IssuerSerial> {
final X500Principal issuer;
final BigInteger serial;
volatile int hashcode = 0;
/**
* Create an X509IssuerSerial.
*
* @param issuer the issuer DN
* @param serial the serial number
*/
X509IssuerSerial(X500Principal issuer, BigInteger serial) {
this.issuer = issuer;
this.serial = serial;
}
/**
* Construct an X509IssuerSerial from an X509Certificate.
*/
X509IssuerSerial(X509Certificate cert) {
this(cert.getIssuerX500Principal(), cert.getSerialNumber());
}
/**
* Returns the issuer.
*
* @return the issuer
*/
X500Principal getIssuer() {
return issuer;
}
/**
* Returns the serial number.
*
* @return the serial number
*/
BigInteger getSerial() {
return serial;
}
/**
* Compares this X509Serial with another and returns true if they
* are equivalent.
*
* @param o the other object to compare with
* @return true if equal, false otherwise
*/
public boolean equals(Object o) {
if (o == this) {
return true;
}
if (!(o instanceof X509IssuerSerial)) {
return false;
}
X509IssuerSerial other = (X509IssuerSerial) o;
if (serial.equals(other.getSerial()) &&
issuer.equals(other.getIssuer())) {
return true;
}
return false;
}
/**
* Returns a hash code value for this X509IssuerSerial.
*
* @return the hash code value
*/
public int hashCode() {
if (hashcode == 0) {
int result = 17;
result = 37*result + issuer.hashCode();
result = 37*result + serial.hashCode();
hashcode = result;
}
return hashcode;
}
@Override
public int compareTo(X509IssuerSerial another) {
int cissuer = issuer.toString()
.compareTo(another.issuer.toString());
if (cissuer != 0) return cissuer;
return this.serial.compareTo(another.serial);
}
}
}
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