@Override
public double metricValue() {
double noDocs = this.docs.size();
double noDocsWithoutEndorcement = 0.0;
for (DigitalSignature ds : this.docs.values())
noDocsWithoutEndorcement += (ds.fullEndorcement()) ? 1 : 0;
statsLogger.info(
"DigitalSignatureUsage. Dataset: {} - Total # Documents : {}; # Documents without Endorcement : {};",
EnvironmentProperties.getInstance().getDatasetURI(),
noDocs,
noDocsWithoutEndorcement);
return (noDocsWithoutEndorcement / noDocs);
}
@Override
public void compute(Quad quad) {
logger.debug("Computing : {} ", quad.asTriple().toString());
Node subject = quad.getSubject();
Node object = quad.getObject();
if (quad.getObject().equals(FOAF.Document.asNode())) {
docs.putIfAbsent(subject.toString(), new DigitalSignature());
}
if (quad.getPredicate().equals(ASSURANCE.asNode())) {
DigitalSignature ds;
if (endorsements.containsKey(object.getURI())) {
ds = endorsements.get(object.getURI());
} else {
ds = new DigitalSignature();
ds.endorcement = object.getURI();
}
ds.assurance = subject.getURI();
docs.put(subject.toString(), ds);
endorsements.put(object.getURI(), ds);
}
if (quad.getPredicate().equals(ENDORSER.asNode())) {
DigitalSignature ds;
if (endorsements.containsKey(object.getURI())) {
ds = endorsements.get(object.getURI());
} else {
ds = new DigitalSignature();
ds.endorcement = subject.getURI();
}
ds.endorcer = object.getURI();
}
if (quad.getObject().equals(ENDORSEMENT.asNode())) {
DigitalSignature ds = new DigitalSignature();
ds.endorcement = subject.getURI();
endorsements.putIfAbsent(subject.getURI(), ds);
}
}
/**
* Processes ServerHelloDone: makes verification of the server messages; sends client messages,
* computers masterSecret, sends ChangeCipherSpec
*/
@DSComment("Package priviledge")
@DSBan(DSCat.DEFAULT_MODIFIER)
@DSGenerator(
tool_name = "Doppelganger",
tool_version = "2.0",
generated_on = "2013-12-30 13:01:10.434 -0500",
hash_original_method = "2DDF37E22088D1FE8BC73EB3CA83F3A0",
hash_generated_method = "D2F899ECF0C8F0AF7307958FBF03F0A2")
void processServerHelloDone() {
PrivateKey clientKey = null;
if (serverCert != null) {
if (session.cipherSuite.isAnonymous()) {
unexpectedMessage();
return;
}
verifyServerCert();
} else {
if (!session.cipherSuite.isAnonymous()) {
unexpectedMessage();
return;
}
}
// Client certificate
if (certificateRequest != null) {
X509Certificate[] certs = null;
// obtain certificates from key manager
String alias = null;
String[] certTypes = certificateRequest.getTypesAsString();
X500Principal[] issuers = certificateRequest.certificate_authorities;
X509KeyManager km = parameters.getKeyManager();
if (km instanceof X509ExtendedKeyManager) {
X509ExtendedKeyManager ekm = (X509ExtendedKeyManager) km;
if (this.socketOwner != null) {
alias = ekm.chooseClientAlias(certTypes, issuers, this.socketOwner);
} else {
alias = ekm.chooseEngineClientAlias(certTypes, issuers, this.engineOwner);
}
if (alias != null) {
certs = ekm.getCertificateChain(alias);
}
} else {
alias = km.chooseClientAlias(certTypes, issuers, this.socketOwner);
if (alias != null) {
certs = km.getCertificateChain(alias);
}
}
session.localCertificates = certs;
clientCert = new CertificateMessage(certs);
clientKey = km.getPrivateKey(alias);
send(clientCert);
}
// Client key exchange
if (session.cipherSuite.keyExchange == CipherSuite.KEY_EXCHANGE_RSA
|| session.cipherSuite.keyExchange == CipherSuite.KEY_EXCHANGE_RSA_EXPORT) {
// RSA encrypted premaster secret message
Cipher c;
try {
c = Cipher.getInstance("RSA/ECB/PKCS1Padding");
if (serverKeyExchange != null) {
c.init(Cipher.ENCRYPT_MODE, serverKeyExchange.getRSAPublicKey());
} else {
c.init(Cipher.ENCRYPT_MODE, serverCert.certs[0]);
}
} catch (Exception e) {
fatalAlert(AlertProtocol.INTERNAL_ERROR, "Unexpected exception", e);
return;
}
preMasterSecret = new byte[48];
parameters.getSecureRandom().nextBytes(preMasterSecret);
System.arraycopy(clientHello.client_version, 0, preMasterSecret, 0, 2);
try {
clientKeyExchange =
new ClientKeyExchange(c.doFinal(preMasterSecret), serverHello.server_version[1] == 1);
} catch (Exception e) {
fatalAlert(AlertProtocol.INTERNAL_ERROR, "Unexpected exception", e);
return;
}
} else {
try {
KeyFactory kf = KeyFactory.getInstance("DH");
KeyAgreement agreement = KeyAgreement.getInstance("DH");
KeyPairGenerator kpg = KeyPairGenerator.getInstance("DH");
PublicKey serverPublic;
DHParameterSpec spec;
if (serverKeyExchange != null) {
serverPublic =
kf.generatePublic(
new DHPublicKeySpec(
serverKeyExchange.par3, serverKeyExchange.par1, serverKeyExchange.par2));
spec = new DHParameterSpec(serverKeyExchange.par1, serverKeyExchange.par2);
} else {
serverPublic = serverCert.certs[0].getPublicKey();
spec = ((DHPublicKey) serverPublic).getParams();
}
kpg.initialize(spec);
KeyPair kp = kpg.generateKeyPair();
Key key = kp.getPublic();
if (clientCert != null
&& serverCert != null
&& (session.cipherSuite.keyExchange == CipherSuite.KEY_EXCHANGE_DHE_RSA
|| session.cipherSuite.keyExchange == CipherSuite.KEY_EXCHANGE_DHE_DSS)) {
PublicKey client_pk = clientCert.certs[0].getPublicKey();
PublicKey server_pk = serverCert.certs[0].getPublicKey();
if (client_pk instanceof DHKey && server_pk instanceof DHKey) {
if (((DHKey) client_pk)
.getParams()
.getG()
.equals(((DHKey) server_pk).getParams().getG())
&& ((DHKey) client_pk)
.getParams()
.getP()
.equals(((DHKey) server_pk).getParams().getG())) {
// client cert message DH public key parameters
// matched those specified by the
// server in its certificate,
clientKeyExchange = new ClientKeyExchange(); // empty
}
}
} else {
clientKeyExchange = new ClientKeyExchange(((DHPublicKey) key).getY());
}
key = kp.getPrivate();
agreement.init(key);
agreement.doPhase(serverPublic, true);
preMasterSecret = agreement.generateSecret();
} catch (Exception e) {
fatalAlert(AlertProtocol.INTERNAL_ERROR, "Unexpected exception", e);
return;
}
}
if (clientKeyExchange != null) {
send(clientKeyExchange);
}
computerMasterSecret();
// send certificate verify for all certificates except those containing
// fixed DH parameters
if (clientCert != null && !clientKeyExchange.isEmpty()) {
// Certificate verify
String authType = clientKey.getAlgorithm();
DigitalSignature ds = new DigitalSignature(authType);
ds.init(clientKey);
if ("RSA".equals(authType)) {
ds.setMD5(io_stream.getDigestMD5());
ds.setSHA(io_stream.getDigestSHA());
} else if ("DSA".equals(authType)) {
ds.setSHA(io_stream.getDigestSHA());
// The Signature should be empty in case of anonymous signature algorithm:
// } else if ("DH".equals(authType)) {
}
certificateVerify = new CertificateVerify(ds.sign());
send(certificateVerify);
}
sendChangeCipherSpec();
}
