/*
* Verify the signature of the OCSP response.
* The responder's cert is implicitly trusted.
*/
private boolean verifySignature(X509Certificate cert) throws CertPathValidatorException {
try {
Signature respSignature = Signature.getInstance(sigAlgId.getName());
respSignature.initVerify(cert.getPublicKey());
respSignature.update(tbsResponseData);
if (respSignature.verify(signature)) {
if (debug != null) {
debug.println("Verified signature of OCSP Response");
}
return true;
} else {
if (debug != null) {
debug.println("Error verifying signature of OCSP Response");
}
return false;
}
} catch (InvalidKeyException | NoSuchAlgorithmException | SignatureException e) {
throw new CertPathValidatorException(e);
}
}
/**
* Returns the key associated with the given alias, using the given password to recover it.
*
* @param alias the alias name
* @param password the password for recovering the key. This password is used internally as the
* key is exported in a PKCS12 format.
* @return the requested key, or null if the given alias does not exist or does not identify a
* <i>key entry</i>.
* @exception NoSuchAlgorithmException if the algorithm for recovering the key cannot be found
* @exception UnrecoverableKeyException if the key cannot be recovered (e.g., the given password
* is wrong).
*/
public Key engineGetKey(String alias, char[] password)
throws NoSuchAlgorithmException, UnrecoverableKeyException {
permissionCheck();
// An empty password is rejected by MacOS API, no private key data
// is exported. If no password is passed (as is the case when
// this implementation is used as browser keystore in various
// deployment scenarios like Webstart, JFX and applets), create
// a dummy password so MacOS API is happy.
if (password == null || password.length == 0) {
// Must not be a char array with only a 0, as this is an empty
// string.
if (random == null) {
random = new SecureRandom();
}
password = Long.toString(random.nextLong()).toCharArray();
}
Object entry = entries.get(alias.toLowerCase());
if (entry == null || !(entry instanceof KeyEntry)) {
return null;
}
// This call gives us a PKCS12 bag, with the key inside it.
byte[] exportedKeyInfo = _getEncodedKeyData(((KeyEntry) entry).keyRef, password);
if (exportedKeyInfo == null) {
return null;
}
PrivateKey returnValue = null;
try {
byte[] pkcs8KeyData = fetchPrivateKeyFromBag(exportedKeyInfo);
byte[] encryptedKey;
AlgorithmParameters algParams;
ObjectIdentifier algOid;
try {
// get the encrypted private key
EncryptedPrivateKeyInfo encrInfo = new EncryptedPrivateKeyInfo(pkcs8KeyData);
encryptedKey = encrInfo.getEncryptedData();
// parse Algorithm parameters
DerValue val = new DerValue(encrInfo.getAlgorithm().encode());
DerInputStream in = val.toDerInputStream();
algOid = in.getOID();
algParams = parseAlgParameters(in);
} catch (IOException ioe) {
UnrecoverableKeyException uke =
new UnrecoverableKeyException(
"Private key not stored as " + "PKCS#8 EncryptedPrivateKeyInfo: " + ioe);
uke.initCause(ioe);
throw uke;
}
// Use JCE to decrypt the data using the supplied password.
SecretKey skey = getPBEKey(password);
Cipher cipher = Cipher.getInstance(algOid.toString());
cipher.init(Cipher.DECRYPT_MODE, skey, algParams);
byte[] decryptedPrivateKey = cipher.doFinal(encryptedKey);
PKCS8EncodedKeySpec kspec = new PKCS8EncodedKeySpec(decryptedPrivateKey);
// Parse the key algorithm and then use a JCA key factory to create the private key.
DerValue val = new DerValue(decryptedPrivateKey);
DerInputStream in = val.toDerInputStream();
// Ignore this -- version should be 0.
int i = in.getInteger();
// Get the Algorithm ID next
DerValue[] value = in.getSequence(2);
AlgorithmId algId = new AlgorithmId(value[0].getOID());
String algName = algId.getName();
// Get a key factory for this algorithm. It's likely to be 'RSA'.
KeyFactory kfac = KeyFactory.getInstance(algName);
returnValue = kfac.generatePrivate(kspec);
} catch (Exception e) {
UnrecoverableKeyException uke =
new UnrecoverableKeyException("Get Key failed: " + e.getMessage());
uke.initCause(e);
throw uke;
}
return returnValue;
}
/*
* Create an OCSP response from its ASN.1 DER encoding.
*/
OCSPResponse(byte[] bytes) throws IOException {
if (dump) {
HexDumpEncoder hexEnc = new HexDumpEncoder();
System.out.println("OCSPResponse bytes are...");
System.out.println(hexEnc.encode(bytes));
}
DerValue der = new DerValue(bytes);
if (der.tag != DerValue.tag_Sequence) {
throw new IOException("Bad encoding in OCSP response: " + "expected ASN.1 SEQUENCE tag.");
}
DerInputStream derIn = der.getData();
// responseStatus
int status = derIn.getEnumerated();
if (status >= 0 && status < rsvalues.length) {
responseStatus = rsvalues[status];
} else {
// unspecified responseStatus
throw new IOException("Unknown OCSPResponse status: " + status);
}
if (debug != null) {
debug.println("OCSP response status: " + responseStatus);
}
if (responseStatus != ResponseStatus.SUCCESSFUL) {
// no need to continue, responseBytes are not set.
singleResponseMap = Collections.emptyMap();
certs = Collections.<X509CertImpl>emptyList();
sigAlgId = null;
signature = null;
tbsResponseData = null;
responseNonce = null;
return;
}
// responseBytes
der = derIn.getDerValue();
if (!der.isContextSpecific((byte) 0)) {
throw new IOException(
"Bad encoding in responseBytes element "
+ "of OCSP response: expected ASN.1 context specific tag 0.");
}
DerValue tmp = der.data.getDerValue();
if (tmp.tag != DerValue.tag_Sequence) {
throw new IOException(
"Bad encoding in responseBytes element "
+ "of OCSP response: expected ASN.1 SEQUENCE tag.");
}
// responseType
derIn = tmp.data;
ObjectIdentifier responseType = derIn.getOID();
if (responseType.equals((Object) OCSP_BASIC_RESPONSE_OID)) {
if (debug != null) {
debug.println("OCSP response type: basic");
}
} else {
if (debug != null) {
debug.println("OCSP response type: " + responseType);
}
throw new IOException("Unsupported OCSP response type: " + responseType);
}
// BasicOCSPResponse
DerInputStream basicOCSPResponse = new DerInputStream(derIn.getOctetString());
DerValue[] seqTmp = basicOCSPResponse.getSequence(2);
if (seqTmp.length < 3) {
throw new IOException("Unexpected BasicOCSPResponse value");
}
DerValue responseData = seqTmp[0];
// Need the DER encoded ResponseData to verify the signature later
tbsResponseData = seqTmp[0].toByteArray();
// tbsResponseData
if (responseData.tag != DerValue.tag_Sequence) {
throw new IOException(
"Bad encoding in tbsResponseData "
+ "element of OCSP response: expected ASN.1 SEQUENCE tag.");
}
DerInputStream seqDerIn = responseData.data;
DerValue seq = seqDerIn.getDerValue();
// version
if (seq.isContextSpecific((byte) 0)) {
// seq[0] is version
if (seq.isConstructed() && seq.isContextSpecific()) {
// System.out.println ("version is available");
seq = seq.data.getDerValue();
int version = seq.getInteger();
if (seq.data.available() != 0) {
throw new IOException(
"Bad encoding in version " + " element of OCSP response: bad format");
}
seq = seqDerIn.getDerValue();
}
}
// responderID
short tag = (byte) (seq.tag & 0x1f);
if (tag == NAME_TAG) {
if (debug != null) {
X500Principal responderName = new X500Principal(seq.getData().toByteArray());
debug.println("OCSP Responder name: " + responderName);
}
} else if (tag == KEY_TAG) {
if (debug != null) {
byte[] responderKey = seq.getData().getOctetString();
debug.println("OCSP Responder key: " + Debug.toString(responderKey));
}
} else {
throw new IOException(
"Bad encoding in responderID element of "
+ "OCSP response: expected ASN.1 context specific tag 0 or 1");
}
// producedAt
seq = seqDerIn.getDerValue();
if (debug != null) {
Date producedAtDate = seq.getGeneralizedTime();
debug.println("OCSP response produced at: " + producedAtDate);
}
// responses
DerValue[] singleResponseDer = seqDerIn.getSequence(1);
singleResponseMap = new HashMap<>(singleResponseDer.length);
if (debug != null) {
debug.println("OCSP number of SingleResponses: " + singleResponseDer.length);
}
for (int i = 0; i < singleResponseDer.length; i++) {
SingleResponse singleResponse = new SingleResponse(singleResponseDer[i]);
singleResponseMap.put(singleResponse.getCertId(), singleResponse);
}
// responseExtensions
byte[] nonce = null;
if (seqDerIn.available() > 0) {
seq = seqDerIn.getDerValue();
if (seq.isContextSpecific((byte) 1)) {
DerValue[] responseExtDer = seq.data.getSequence(3);
for (int i = 0; i < responseExtDer.length; i++) {
Extension ext = new Extension(responseExtDer[i]);
if (debug != null) {
debug.println("OCSP extension: " + ext);
}
// Only the NONCE extension is recognized
if (ext.getExtensionId().equals((Object) OCSP.NONCE_EXTENSION_OID)) {
nonce = ext.getExtensionValue();
} else if (ext.isCritical()) {
throw new IOException("Unsupported OCSP critical extension: " + ext.getExtensionId());
}
}
}
}
responseNonce = nonce;
// signatureAlgorithmId
sigAlgId = AlgorithmId.parse(seqTmp[1]);
// signature
signature = seqTmp[2].getBitString();
// if seq[3] is available , then it is a sequence of certificates
if (seqTmp.length > 3) {
// certs are available
DerValue seqCert = seqTmp[3];
if (!seqCert.isContextSpecific((byte) 0)) {
throw new IOException(
"Bad encoding in certs element of "
+ "OCSP response: expected ASN.1 context specific tag 0.");
}
DerValue[] derCerts = seqCert.getData().getSequence(3);
certs = new ArrayList<X509CertImpl>(derCerts.length);
try {
for (int i = 0; i < derCerts.length; i++) {
certs.add(new X509CertImpl(derCerts[i].toByteArray()));
}
} catch (CertificateException ce) {
throw new IOException("Bad encoding in X509 Certificate", ce);
}
} else {
certs = Collections.<X509CertImpl>emptyList();
}
}