--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/security/ssl/Handshaker.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,973 @@
+/*
+ * Copyright 1996-2007 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+
+package sun.security.ssl;
+
+import java.io.*;
+import java.util.*;
+import java.security.*;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.security.AccessController;
+import java.security.AccessControlContext;
+import java.security.PrivilegedExceptionAction;
+import java.security.PrivilegedActionException;
+import java.security.cert.X509Certificate;
+
+import javax.crypto.*;
+import javax.crypto.spec.*;
+
+import javax.net.ssl.*;
+import sun.misc.HexDumpEncoder;
+
+import sun.security.internal.spec.*;
+import sun.security.internal.interfaces.TlsMasterSecret;
+
+import sun.security.ssl.HandshakeMessage.*;
+import sun.security.ssl.CipherSuite.*;
+
+/**
+ * Handshaker ... processes handshake records from an SSL V3.0
+ * data stream, handling all the details of the handshake protocol.
+ *
+ * Note that the real protocol work is done in two subclasses, the base
+ * class just provides the control flow and key generation framework.
+ *
+ * @author David Brownell
+ */
+abstract class Handshaker {
+
+ // current protocol version
+ ProtocolVersion protocolVersion;
+
+ // list of enabled protocols
+ ProtocolList enabledProtocols;
+
+ private boolean isClient;
+
+ SSLSocketImpl conn = null;
+ SSLEngineImpl engine = null;
+
+ HandshakeHash handshakeHash;
+ HandshakeInStream input;
+ HandshakeOutStream output;
+ int state;
+ SSLContextImpl sslContext;
+ RandomCookie clnt_random, svr_random;
+ SSLSessionImpl session;
+
+ // Temporary MD5 and SHA message digests. Must always be left
+ // in reset state after use.
+ private MessageDigest md5Tmp, shaTmp;
+
+ // list of enabled CipherSuites
+ CipherSuiteList enabledCipherSuites;
+
+ // current CipherSuite. Never null, initially SSL_NULL_WITH_NULL_NULL
+ CipherSuite cipherSuite;
+
+ // current key exchange. Never null, initially K_NULL
+ KeyExchange keyExchange;
+
+ /* True if this session is being resumed (fast handshake) */
+ boolean resumingSession;
+
+ /* True if it's OK to start a new SSL session */
+ boolean enableNewSession;
+
+ // Temporary storage for the individual keys. Set by
+ // calculateConnectionKeys() and cleared once the ciphers are
+ // activated.
+ private SecretKey clntWriteKey, svrWriteKey;
+ private IvParameterSpec clntWriteIV, svrWriteIV;
+ private SecretKey clntMacSecret, svrMacSecret;
+
+ /*
+ * Delegated task subsystem data structures.
+ *
+ * If thrown is set, we need to propagate this back immediately
+ * on entry into processMessage().
+ *
+ * Data is protected by the SSLEngine.this lock.
+ */
+ private volatile boolean taskDelegated = false;
+ private volatile DelegatedTask delegatedTask = null;
+ private volatile Exception thrown = null;
+
+ // Could probably use a java.util.concurrent.atomic.AtomicReference
+ // here instead of using this lock. Consider changing.
+ private Object thrownLock = new Object();
+
+ /* Class and subclass dynamic debugging support */
+ static final Debug debug = Debug.getInstance("ssl");
+
+ Handshaker(SSLSocketImpl c, SSLContextImpl context,
+ ProtocolList enabledProtocols, boolean needCertVerify,
+ boolean isClient) {
+ this.conn = c;
+ init(context, enabledProtocols, needCertVerify, isClient);
+ }
+
+ Handshaker(SSLEngineImpl engine, SSLContextImpl context,
+ ProtocolList enabledProtocols, boolean needCertVerify,
+ boolean isClient) {
+ this.engine = engine;
+ init(context, enabledProtocols, needCertVerify, isClient);
+ }
+
+ private void init(SSLContextImpl context, ProtocolList enabledProtocols,
+ boolean needCertVerify, boolean isClient) {
+
+ this.sslContext = context;
+ this.isClient = isClient;
+ enableNewSession = true;
+
+ setCipherSuite(CipherSuite.C_NULL);
+
+ md5Tmp = JsseJce.getMD5();
+ shaTmp = JsseJce.getSHA();
+
+ //
+ // We accumulate digests of the handshake messages so that
+ // we can read/write CertificateVerify and Finished messages,
+ // getting assurance against some particular active attacks.
+ //
+ handshakeHash = new HandshakeHash(needCertVerify);
+
+ setEnabledProtocols(enabledProtocols);
+
+ if (conn != null) {
+ conn.getAppInputStream().r.setHandshakeHash(handshakeHash);
+ } else { // engine != null
+ engine.inputRecord.setHandshakeHash(handshakeHash);
+ }
+
+
+ //
+ // In addition to the connection state machine, controlling
+ // how the connection deals with the different sorts of records
+ // that get sent (notably handshake transitions!), there's
+ // also a handshaking state machine that controls message
+ // sequencing.
+ //
+ // It's a convenient artifact of the protocol that this can,
+ // with only a couple of minor exceptions, be driven by the
+ // type constant for the last message seen: except for the
+ // client's cert verify, those constants are in a convenient
+ // order to drastically simplify state machine checking.
+ //
+ state = -1;
+ }
+
+ /*
+ * Reroutes calls to the SSLSocket or SSLEngine (*SE).
+ *
+ * We could have also done it by extra classes
+ * and letting them override, but this seemed much
+ * less involved.
+ */
+ void fatalSE(byte b, String diagnostic) throws IOException {
+ fatalSE(b, diagnostic, null);
+ }
+
+ void fatalSE(byte b, Throwable cause) throws IOException {
+ fatalSE(b, null, cause);
+ }
+
+ void fatalSE(byte b, String diagnostic, Throwable cause)
+ throws IOException {
+ if (conn != null) {
+ conn.fatal(b, diagnostic, cause);
+ } else {
+ engine.fatal(b, diagnostic, cause);
+ }
+ }
+
+ void warningSE(byte b) {
+ if (conn != null) {
+ conn.warning(b);
+ } else {
+ engine.warning(b);
+ }
+ }
+
+ String getHostSE() {
+ if (conn != null) {
+ return conn.getHost();
+ } else {
+ return engine.getPeerHost();
+ }
+ }
+
+ String getHostAddressSE() {
+ if (conn != null) {
+ return conn.getInetAddress().getHostAddress();
+ } else {
+ /*
+ * This is for caching only, doesn't matter that's is really
+ * a hostname. The main thing is that it doesn't do
+ * a reverse DNS lookup, potentially slowing things down.
+ */
+ return engine.getPeerHost();
+ }
+ }
+
+ boolean isLoopbackSE() {
+ if (conn != null) {
+ return conn.getInetAddress().isLoopbackAddress();
+ } else {
+ return false;
+ }
+ }
+
+ int getPortSE() {
+ if (conn != null) {
+ return conn.getPort();
+ } else {
+ return engine.getPeerPort();
+ }
+ }
+
+ int getLocalPortSE() {
+ if (conn != null) {
+ return conn.getLocalPort();
+ } else {
+ return -1;
+ }
+ }
+
+ String getHostnameVerificationSE() {
+ if (conn != null) {
+ return conn.getHostnameVerification();
+ } else {
+ return engine.getHostnameVerification();
+ }
+ }
+
+ AccessControlContext getAccSE() {
+ if (conn != null) {
+ return conn.getAcc();
+ } else {
+ return engine.getAcc();
+ }
+ }
+
+ private void setVersionSE(ProtocolVersion protocolVersion) {
+ if (conn != null) {
+ conn.setVersion(protocolVersion);
+ } else {
+ engine.setVersion(protocolVersion);
+ }
+ }
+
+ /**
+ * Set the active protocol version and propagate it to the SSLSocket
+ * and our handshake streams. Called from ClientHandshaker
+ * and ServerHandshaker with the negotiated protocol version.
+ */
+ void setVersion(ProtocolVersion protocolVersion) {
+ this.protocolVersion = protocolVersion;
+ setVersionSE(protocolVersion);
+ output.r.setVersion(protocolVersion);
+ }
+
+
+ /**
+ * Set the enabled protocols. Called from the constructor or
+ * SSLSocketImpl.setEnabledProtocols() (if the handshake is not yet
+ * in progress).
+ */
+ void setEnabledProtocols(ProtocolList enabledProtocols) {
+ this.enabledProtocols = enabledProtocols;
+
+ // temporary protocol version until the actual protocol version
+ // is negotiated in the Hello exchange. This affects the record
+ // version we sent with the ClientHello. Using max() as the record
+ // version is not really correct but some implementations fail to
+ // correctly negotiate TLS otherwise.
+ protocolVersion = enabledProtocols.max;
+
+ ProtocolVersion helloVersion = enabledProtocols.helloVersion;
+
+ input = new HandshakeInStream(handshakeHash);
+
+ if (conn != null) {
+ output = new HandshakeOutStream(protocolVersion, helloVersion,
+ handshakeHash, conn);
+ conn.getAppInputStream().r.setHelloVersion(helloVersion);
+ } else {
+ output = new HandshakeOutStream(protocolVersion, helloVersion,
+ handshakeHash, engine);
+ engine.outputRecord.setHelloVersion(helloVersion);
+ }
+
+ }
+
+ /**
+ * Set cipherSuite and keyExchange to the given CipherSuite.
+ * Does not perform any verification that this is a valid selection,
+ * this must be done before calling this method.
+ */
+ void setCipherSuite(CipherSuite s) {
+ this.cipherSuite = s;
+ this.keyExchange = s.keyExchange;
+ }
+
+ /**
+ * Check if the given ciphersuite is enabled and available.
+ * (Enabled ciphersuites are always available unless the status has
+ * changed due to change in JCE providers since it was enabled).
+ * Does not check if the required server certificates are available.
+ */
+ boolean isEnabled(CipherSuite s) {
+ return enabledCipherSuites.contains(s) && s.isAvailable();
+ }
+
+ /**
+ * As long as handshaking has not started, we can
+ * change whether session creations are allowed.
+ *
+ * Callers should do their own checking if handshaking
+ * has started.
+ */
+ void setEnableSessionCreation(boolean newSessions) {
+ enableNewSession = newSessions;
+ }
+
+ /**
+ * Create a new read cipher and return it to caller.
+ */
+ CipherBox newReadCipher() throws NoSuchAlgorithmException {
+ BulkCipher cipher = cipherSuite.cipher;
+ CipherBox box;
+ if (isClient) {
+ box = cipher.newCipher(protocolVersion, svrWriteKey, svrWriteIV,
+ false);
+ svrWriteKey = null;
+ svrWriteIV = null;
+ } else {
+ box = cipher.newCipher(protocolVersion, clntWriteKey, clntWriteIV,
+ false);
+ clntWriteKey = null;
+ clntWriteIV = null;
+ }
+ return box;
+ }
+
+ /**
+ * Create a new write cipher and return it to caller.
+ */
+ CipherBox newWriteCipher() throws NoSuchAlgorithmException {
+ BulkCipher cipher = cipherSuite.cipher;
+ CipherBox box;
+ if (isClient) {
+ box = cipher.newCipher(protocolVersion, clntWriteKey, clntWriteIV,
+ true);
+ clntWriteKey = null;
+ clntWriteIV = null;
+ } else {
+ box = cipher.newCipher(protocolVersion, svrWriteKey, svrWriteIV,
+ true);
+ svrWriteKey = null;
+ svrWriteIV = null;
+ }
+ return box;
+ }
+
+ /**
+ * Create a new read MAC and return it to caller.
+ */
+ MAC newReadMAC() throws NoSuchAlgorithmException, InvalidKeyException {
+ MacAlg macAlg = cipherSuite.macAlg;
+ MAC mac;
+ if (isClient) {
+ mac = macAlg.newMac(protocolVersion, svrMacSecret);
+ svrMacSecret = null;
+ } else {
+ mac = macAlg.newMac(protocolVersion, clntMacSecret);
+ clntMacSecret = null;
+ }
+ return mac;
+ }
+
+ /**
+ * Create a new write MAC and return it to caller.
+ */
+ MAC newWriteMAC() throws NoSuchAlgorithmException, InvalidKeyException {
+ MacAlg macAlg = cipherSuite.macAlg;
+ MAC mac;
+ if (isClient) {
+ mac = macAlg.newMac(protocolVersion, clntMacSecret);
+ clntMacSecret = null;
+ } else {
+ mac = macAlg.newMac(protocolVersion, svrMacSecret);
+ svrMacSecret = null;
+ }
+ return mac;
+ }
+
+ /*
+ * Returns true iff the handshake sequence is done, so that
+ * this freshly created session can become the current one.
+ */
+ boolean isDone() {
+ return state == HandshakeMessage.ht_finished;
+ }
+
+
+ /*
+ * Returns the session which was created through this
+ * handshake sequence ... should be called after isDone()
+ * returns true.
+ */
+ SSLSessionImpl getSession() {
+ return session;
+ }
+
+ /*
+ * This routine is fed SSL handshake records when they become available,
+ * and processes messages found therein.
+ */
+ void process_record(InputRecord r, boolean expectingFinished)
+ throws IOException {
+
+ checkThrown();
+
+ /*
+ * Store the incoming handshake data, then see if we can
+ * now process any completed handshake messages
+ */
+ input.incomingRecord(r);
+
+ /*
+ * We don't need to create a separate delegatable task
+ * for finished messages.
+ */
+ if ((conn != null) || expectingFinished) {
+ processLoop();
+ } else {
+ delegateTask(new PrivilegedExceptionAction<Void>() {
+ public Void run() throws Exception {
+ processLoop();
+ return null;
+ }
+ });
+ }
+ }
+
+ /*
+ * On input, we hash messages one at a time since servers may need
+ * to access an intermediate hash to validate a CertificateVerify
+ * message.
+ *
+ * Note that many handshake messages can come in one record (and often
+ * do, to reduce network resource utilization), and one message can also
+ * require multiple records (e.g. very large Certificate messages).
+ */
+ void processLoop() throws IOException {
+
+ while (input.available() > 0) {
+ byte messageType;
+ int messageLen;
+
+ /*
+ * See if we can read the handshake message header, and
+ * then the entire handshake message. If not, wait till
+ * we can read and process an entire message.
+ */
+ input.mark(4);
+
+ messageType = (byte)input.getInt8();
+ messageLen = input.getInt24();
+
+ if (input.available() < messageLen) {
+ input.reset();
+ return;
+ }
+
+ /*
+ * Process the messsage. We require
+ * that processMessage() consumes the entire message. In
+ * lieu of explicit error checks (how?!) we assume that the
+ * data will look like garbage on encoding/processing errors,
+ * and that other protocol code will detect such errors.
+ *
+ * Note that digesting is normally deferred till after the
+ * message has been processed, though to process at least the
+ * client's Finished message (i.e. send the server's) we need
+ * to acccelerate that digesting.
+ *
+ * Also, note that hello request messages are never hashed;
+ * that includes the hello request header, too.
+ */
+ if (messageType == HandshakeMessage.ht_hello_request) {
+ input.reset();
+ processMessage(messageType, messageLen);
+ input.ignore(4 + messageLen);
+ } else {
+ input.mark(messageLen);
+ processMessage(messageType, messageLen);
+ input.digestNow();
+ }
+ }
+ }
+
+
+ /**
+ * Returns true iff the handshaker has sent any messages.
+ * Server kickstarting is not as neat as it should be; we
+ * need to create a new handshaker, this method lets us
+ * know if we should.
+ */
+ boolean started() {
+ return state >= 0;
+ }
+
+
+ /*
+ * Used to kickstart the negotiation ... either writing a
+ * ClientHello or a HelloRequest as appropriate, whichever
+ * the subclass returns. NOP if handshaking's already started.
+ */
+ void kickstart() throws IOException {
+ if (state >= 0) {
+ return;
+ }
+ HandshakeMessage m = getKickstartMessage();
+
+ if (debug != null && Debug.isOn("handshake")) {
+ m.print(System.out);
+ }
+ m.write(output);
+ output.flush();
+
+ state = m.messageType();
+ }
+
+ /**
+ * Both client and server modes can start handshaking; but the
+ * message they send to do so is different.
+ */
+ abstract HandshakeMessage getKickstartMessage() throws SSLException;
+
+ /*
+ * Client and Server side protocols are each driven though this
+ * call, which processes a single message and drives the appropriate
+ * side of the protocol state machine (depending on the subclass).
+ */
+ abstract void processMessage(byte messageType, int messageLen)
+ throws IOException;
+
+ /*
+ * Most alerts in the protocol relate to handshaking problems.
+ * Alerts are detected as the connection reads data.
+ */
+ abstract void handshakeAlert(byte description) throws SSLProtocolException;
+
+ /*
+ * Sends a change cipher spec message and updates the write side
+ * cipher state so that future messages use the just-negotiated spec.
+ */
+ void sendChangeCipherSpec(Finished mesg, boolean lastMessage)
+ throws IOException {
+
+ output.flush(); // i.e. handshake data
+
+ /*
+ * The write cipher state is protected by the connection write lock
+ * so we must grab it while making the change. We also
+ * make sure no writes occur between sending the ChangeCipherSpec
+ * message, installing the new cipher state, and sending the
+ * Finished message.
+ *
+ * We already hold SSLEngine/SSLSocket "this" by virtue
+ * of this being called from the readRecord code.
+ */
+ OutputRecord r;
+ if (conn != null) {
+ r = new OutputRecord(Record.ct_change_cipher_spec);
+ } else {
+ r = new EngineOutputRecord(Record.ct_change_cipher_spec, engine);
+ }
+
+ r.setVersion(protocolVersion);
+ r.write(1); // single byte of data
+
+ if (conn != null) {
+ synchronized (conn.writeLock) {
+ conn.writeRecord(r);
+ conn.changeWriteCiphers();
+ if (debug != null && Debug.isOn("handshake")) {
+ mesg.print(System.out);
+ }
+ mesg.write(output);
+ output.flush();
+ }
+ } else {
+ synchronized (engine.writeLock) {
+ engine.writeRecord((EngineOutputRecord)r);
+ engine.changeWriteCiphers();
+ if (debug != null && Debug.isOn("handshake")) {
+ mesg.print(System.out);
+ }
+ mesg.write(output);
+
+ if (lastMessage) {
+ output.setFinishedMsg();
+ }
+ output.flush();
+ }
+ }
+ }
+
+ /*
+ * Single access point to key calculation logic. Given the
+ * pre-master secret and the nonces from client and server,
+ * produce all the keying material to be used.
+ */
+ void calculateKeys(SecretKey preMasterSecret, ProtocolVersion version) {
+ SecretKey master = calculateMasterSecret(preMasterSecret, version);
+ session.setMasterSecret(master);
+ calculateConnectionKeys(master);
+ }
+
+
+ /*
+ * Calculate the master secret from its various components. This is
+ * used for key exchange by all cipher suites.
+ *
+ * The master secret is the catenation of three MD5 hashes, each
+ * consisting of the pre-master secret and a SHA1 hash. Those three
+ * SHA1 hashes are of (different) constant strings, the pre-master
+ * secret, and the nonces provided by the client and the server.
+ */
+ private SecretKey calculateMasterSecret(SecretKey preMasterSecret,
+ ProtocolVersion requestedVersion) {
+ TlsMasterSecretParameterSpec spec = new TlsMasterSecretParameterSpec
+ (preMasterSecret, protocolVersion.major, protocolVersion.minor,
+ clnt_random.random_bytes, svr_random.random_bytes);
+
+ if (debug != null && Debug.isOn("keygen")) {
+ HexDumpEncoder dump = new HexDumpEncoder();
+
+ System.out.println("SESSION KEYGEN:");
+
+ System.out.println("PreMaster Secret:");
+ printHex(dump, preMasterSecret.getEncoded());
+
+ // Nonces are dumped with connection keygen, no
+ // benefit to doing it twice
+ }
+
+ SecretKey masterSecret;
+ try {
+ KeyGenerator kg = JsseJce.getKeyGenerator("SunTlsMasterSecret");
+ kg.init(spec);
+ masterSecret = kg.generateKey();
+ } catch (GeneralSecurityException e) {
+ // For RSA premaster secrets, do not signal a protocol error
+ // due to the Bleichenbacher attack. See comments further down.
+ if (!preMasterSecret.getAlgorithm().equals("TlsRsaPremasterSecret")) {
+ throw new ProviderException(e);
+ }
+ if (debug != null && Debug.isOn("handshake")) {
+ System.out.println("RSA master secret generation error:");
+ e.printStackTrace(System.out);
+ System.out.println("Generating new random premaster secret");
+ }
+ preMasterSecret = RSAClientKeyExchange.generateDummySecret(protocolVersion);
+ // recursive call with new premaster secret
+ return calculateMasterSecret(preMasterSecret, null);
+ }
+
+ // if no version check requested (client side handshake),
+ // or version information is not available (not an RSA premaster secret),
+ // return master secret immediately.
+ if ((requestedVersion == null) || !(masterSecret instanceof TlsMasterSecret)) {
+ return masterSecret;
+ }
+ TlsMasterSecret tlsKey = (TlsMasterSecret)masterSecret;
+ int major = tlsKey.getMajorVersion();
+ int minor = tlsKey.getMinorVersion();
+ if ((major < 0) || (minor < 0)) {
+ return masterSecret;
+ }
+
+ // check if the premaster secret version is ok
+ // the specification says that it must be the maximum version supported
+ // by the client from its ClientHello message. However, many
+ // implementations send the negotiated version, so accept both
+ // NOTE that we may be comparing two unsupported version numbers in
+ // the second case, which is why we cannot use object reference
+ // equality in this special case
+ ProtocolVersion premasterVersion = ProtocolVersion.valueOf(major, minor);
+ boolean versionMismatch = (premasterVersion != protocolVersion) &&
+ (premasterVersion.v != requestedVersion.v);
+
+
+ if (versionMismatch == false) {
+ // check passed, return key
+ return masterSecret;
+ }
+
+ // Due to the Bleichenbacher attack, do not signal a protocol error.
+ // Generate a random premaster secret and continue with the handshake,
+ // which will fail when verifying the finished messages.
+ // For more information, see comments in PreMasterSecret.
+ if (debug != null && Debug.isOn("handshake")) {
+ System.out.println("RSA PreMasterSecret version error: expected"
+ + protocolVersion + " or " + requestedVersion + ", decrypted: "
+ + premasterVersion);
+ System.out.println("Generating new random premaster secret");
+ }
+ preMasterSecret = RSAClientKeyExchange.generateDummySecret(protocolVersion);
+ // recursive call with new premaster secret
+ return calculateMasterSecret(preMasterSecret, null);
+ }
+
+ /*
+ * Calculate the keys needed for this connection, once the session's
+ * master secret has been calculated. Uses the master key and nonces;
+ * the amount of keying material generated is a function of the cipher
+ * suite that's been negotiated.
+ *
+ * This gets called both on the "full handshake" (where we exchanged
+ * a premaster secret and started a new session) as well as on the
+ * "fast handshake" (where we just resumed a pre-existing session).
+ */
+ void calculateConnectionKeys(SecretKey masterKey) {
+ /*
+ * For both the read and write sides of the protocol, we use the
+ * master to generate MAC secrets and cipher keying material. Block
+ * ciphers need initialization vectors, which we also generate.
+ *
+ * First we figure out how much keying material is needed.
+ */
+ int hashSize = cipherSuite.macAlg.size;
+ boolean is_exportable = cipherSuite.exportable;
+ BulkCipher cipher = cipherSuite.cipher;
+ int keySize = cipher.keySize;
+ int ivSize = cipher.ivSize;
+ int expandedKeySize = is_exportable ? cipher.expandedKeySize : 0;
+
+ TlsKeyMaterialParameterSpec spec = new TlsKeyMaterialParameterSpec
+ (masterKey, protocolVersion.major, protocolVersion.minor,
+ clnt_random.random_bytes, svr_random.random_bytes,
+ cipher.algorithm, cipher.keySize, expandedKeySize,
+ cipher.ivSize, hashSize);
+
+ try {
+ KeyGenerator kg = JsseJce.getKeyGenerator("SunTlsKeyMaterial");
+ kg.init(spec);
+ TlsKeyMaterialSpec keySpec = (TlsKeyMaterialSpec)kg.generateKey();
+
+ clntWriteKey = keySpec.getClientCipherKey();
+ svrWriteKey = keySpec.getServerCipherKey();
+
+ clntWriteIV = keySpec.getClientIv();
+ svrWriteIV = keySpec.getServerIv();
+
+ clntMacSecret = keySpec.getClientMacKey();
+ svrMacSecret = keySpec.getServerMacKey();
+ } catch (GeneralSecurityException e) {
+ throw new ProviderException(e);
+ }
+
+ //
+ // Dump the connection keys as they're generated.
+ //
+ if (debug != null && Debug.isOn("keygen")) {
+ synchronized (System.out) {
+ HexDumpEncoder dump = new HexDumpEncoder();
+
+ System.out.println("CONNECTION KEYGEN:");
+
+ // Inputs:
+ System.out.println("Client Nonce:");
+ printHex(dump, clnt_random.random_bytes);
+ System.out.println("Server Nonce:");
+ printHex(dump, svr_random.random_bytes);
+ System.out.println("Master Secret:");
+ printHex(dump, masterKey.getEncoded());
+
+ // Outputs:
+ System.out.println("Client MAC write Secret:");
+ printHex(dump, clntMacSecret.getEncoded());
+ System.out.println("Server MAC write Secret:");
+ printHex(dump, svrMacSecret.getEncoded());
+
+ if (clntWriteKey != null) {
+ System.out.println("Client write key:");
+ printHex(dump, clntWriteKey.getEncoded());
+ System.out.println("Server write key:");
+ printHex(dump, svrWriteKey.getEncoded());
+ } else {
+ System.out.println("... no encryption keys used");
+ }
+
+ if (clntWriteIV != null) {
+ System.out.println("Client write IV:");
+ printHex(dump, clntWriteIV.getIV());
+ System.out.println("Server write IV:");
+ printHex(dump, svrWriteIV.getIV());
+ } else {
+ System.out.println("... no IV used for this cipher");
+ }
+ System.out.flush();
+ }
+ }
+ }
+
+ private static void printHex(HexDumpEncoder dump, byte[] bytes) {
+ if (bytes == null) {
+ System.out.println("(key bytes not available)");
+ } else {
+ try {
+ dump.encodeBuffer(bytes, System.out);
+ } catch (IOException e) {
+ // just for debugging, ignore this
+ }
+ }
+ }
+
+ /**
+ * Throw an SSLException with the specified message and cause.
+ * Shorthand until a new SSLException constructor is added.
+ * This method never returns.
+ */
+ static void throwSSLException(String msg, Throwable cause)
+ throws SSLException {
+ SSLException e = new SSLException(msg);
+ e.initCause(cause);
+ throw e;
+ }
+
+
+ /*
+ * Implement a simple task delegator.
+ *
+ * We are currently implementing this as a single delegator, may
+ * try for parallel tasks later. Client Authentication could
+ * benefit from this, where ClientKeyExchange/CertificateVerify
+ * could be carried out in parallel.
+ */
+ class DelegatedTask<E> implements Runnable {
+
+ private PrivilegedExceptionAction<E> pea;
+
+ DelegatedTask(PrivilegedExceptionAction<E> pea) {
+ this.pea = pea;
+ }
+
+ public void run() {
+ synchronized (engine) {
+ try {
+ AccessController.doPrivileged(pea, engine.getAcc());
+ } catch (PrivilegedActionException pae) {
+ thrown = pae.getException();
+ } catch (RuntimeException rte) {
+ thrown = rte;
+ }
+ delegatedTask = null;
+ taskDelegated = false;
+ }
+ }
+ }
+
+ private <T> void delegateTask(PrivilegedExceptionAction<T> pea) {
+ delegatedTask = new DelegatedTask<T>(pea);
+ taskDelegated = false;
+ thrown = null;
+ }
+
+ DelegatedTask getTask() {
+ if (!taskDelegated) {
+ taskDelegated = true;
+ return delegatedTask;
+ } else {
+ return null;
+ }
+ }
+
+ /*
+ * See if there are any tasks which need to be delegated
+ *
+ * Locked by SSLEngine.this.
+ */
+ boolean taskOutstanding() {
+ return (delegatedTask != null);
+ }
+
+ /*
+ * The previous caller failed for some reason, report back the
+ * Exception. We won't worry about Error's.
+ *
+ * Locked by SSLEngine.this.
+ */
+ void checkThrown() throws SSLException {
+ synchronized (thrownLock) {
+ if (thrown != null) {
+
+ String msg = thrown.getMessage();
+
+ if (msg == null) {
+ msg = "Delegated task threw Exception/Error";
+ }
+
+ /*
+ * See what the underlying type of exception is. We should
+ * throw the same thing. Chain thrown to the new exception.
+ */
+ Exception e = thrown;
+ thrown = null;
+
+ if (e instanceof RuntimeException) {
+ throw (RuntimeException)
+ new RuntimeException(msg).initCause(e);
+ } else if (e instanceof SSLHandshakeException) {
+ throw (SSLHandshakeException)
+ new SSLHandshakeException(msg).initCause(e);
+ } else if (e instanceof SSLKeyException) {
+ throw (SSLKeyException)
+ new SSLKeyException(msg).initCause(e);
+ } else if (e instanceof SSLPeerUnverifiedException) {
+ throw (SSLPeerUnverifiedException)
+ new SSLPeerUnverifiedException(msg).initCause(e);
+ } else if (e instanceof SSLProtocolException) {
+ throw (SSLProtocolException)
+ new SSLProtocolException(msg).initCause(e);
+ } else {
+ /*
+ * If it's SSLException or any other Exception,
+ * we'll wrap it in an SSLException.
+ */
+ throw (SSLException)
+ new SSLException(msg).initCause(e);
+ }
+ }
+ }
+ }
+}