Java Code Examples for javax.net.ssl.SSLEngine#unwrap()
The following examples show how to use
javax.net.ssl.SSLEngine#unwrap() .
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Example 1
Source File: BufferOverflowUnderflowTest.java From openjdk-jdk9 with GNU General Public License v2.0 | 6 votes |
private void checkBufferOverflowOnUnWrap(SSLEngine wrappingEngine, SSLEngine unwrappingEngine) throws SSLException { String wrapperMode = wrappingEngine.getUseClientMode() ? "client" : "server"; String unwrapperMode = unwrappingEngine.getUseClientMode() ? "client" : "server"; if (wrapperMode.equals(unwrapperMode)) { throw new Error("Test error: both engines are in the same mode!"); } System.out.println("=================================================" + "==========="); System.out.println("Testing SSLEngine buffer overflow" + " on unwrap by " + unwrapperMode); ByteBuffer app = ByteBuffer.wrap(MESSAGE.getBytes()); ByteBuffer net = ByteBuffer .allocate(wrappingEngine.getSession().getPacketBufferSize()); SSLEngineResult r = wrappingEngine.wrap(app, net); checkResult(r, SSLEngineResult.Status.OK); //Making app buffer size less than required by 1 byte. app = ByteBuffer.allocate(MESSAGE.length() - 1); net.flip(); r = unwrappingEngine.unwrap(net, app); checkResult(r, SSLEngineResult.Status.BUFFER_OVERFLOW); System.out.println("Passed"); }
Example 2
Source File: QpidByteBufferFactory.java From qpid-broker-j with Apache License 2.0 | 6 votes |
static SSLEngineResult decryptSSL(final SSLEngine engine, final QpidByteBuffer src, final QpidByteBuffer dst) throws SSLException { if (src instanceof SingleQpidByteBuffer) { ByteBuffer underlying = ((SingleQpidByteBuffer)src).getUnderlyingBuffer(); if (dst instanceof SingleQpidByteBuffer) { return engine.unwrap(underlying, ((SingleQpidByteBuffer) dst).getUnderlyingBuffer()); } else if (dst instanceof MultiQpidByteBuffer) { return engine.unwrap(underlying, ((MultiQpidByteBuffer) dst).getUnderlyingBuffers()); } else { throw new IllegalStateException("unknown QBB implementation"); } } else { throw new IllegalStateException("Source QBB can only be single byte buffer"); } }
Example 3
Source File: DiameterFirewall.java From SigFW with GNU Affero General Public License v3.0 | 5 votes |
/** * DTLS decrypt byte buffer */ boolean diameterDTLSDecryptBuffer(SSLEngine engine, ByteBuffer source, ByteBuffer recBuffer) throws Exception { //printHex("Received application data for Decrypt", source); SSLEngineResult r = engine.unwrap(source, recBuffer); recBuffer.flip(); SSLEngineResult.Status rs = r.getStatus(); if (rs == SSLEngineResult.Status.BUFFER_OVERFLOW) { // the client maximum fragment size config does not work? logger.warn("Buffer overflow: " + "incorrect server maximum fragment size"); return false; } else if (rs == SSLEngineResult.Status.BUFFER_UNDERFLOW) { // unlikely logger.warn("Buffer underflow during wraping"); return false; } else if (rs == SSLEngineResult.Status.CLOSED) { logger.warn("SSLEngine has closed"); return false; } else if (rs == SSLEngineResult.Status.OK) { // OK } else { logger.warn("Can't reach here, result is " + rs); return false; } //printHex("Produced application data by Decrypt", recBuffer); return true; }
Example 4
Source File: BufferOverflowUnderflowTest.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
private void checkBufferUnderflowOnUnWrap(SSLEngine wrappingEngine, SSLEngine unwrappingEngine) throws SSLException { String wrapperMode = wrappingEngine.getUseClientMode() ? "client" : "server"; String unwrapperMode = unwrappingEngine.getUseClientMode() ? "client" : "server"; if (wrapperMode.equals(unwrapperMode)) { throw new Error("Test error: both engines are in the same mode!"); } System.out.println("=================================================" + "==========="); System.out.println("Testing SSLEngine buffer underflow" + " on unwrap by " + unwrapperMode); ByteBuffer app = ByteBuffer.wrap(MESSAGE.getBytes()); ByteBuffer net = ByteBuffer .allocate(wrappingEngine.getSession().getPacketBufferSize()); SSLEngineResult r = wrappingEngine.wrap(app, net); checkResult(r, SSLEngineResult.Status.OK); app = ByteBuffer.allocate(unwrappingEngine.getSession() .getApplicationBufferSize()); net.flip(); //Making net buffer size less than size of dtls message. net.limit(net.limit() - 1); r = unwrappingEngine.unwrap(net, app); checkResult(r, SSLEngineResult.Status.BUFFER_UNDERFLOW); System.out.println("Passed"); }
Example 5
Source File: SSLEngineTest.java From netty-4.1.22 with Apache License 2.0 | 4 votes |
@Test public void testBufferUnderFlow() throws Exception { SelfSignedCertificate cert = new SelfSignedCertificate(); clientSslCtx = SslContextBuilder .forClient() .trustManager(cert.cert()) .sslProvider(sslClientProvider()) .build(); SSLEngine client = clientSslCtx.newEngine(UnpooledByteBufAllocator.DEFAULT); serverSslCtx = SslContextBuilder .forServer(cert.certificate(), cert.privateKey()) .sslProvider(sslServerProvider()) .build(); SSLEngine server = serverSslCtx.newEngine(UnpooledByteBufAllocator.DEFAULT); try { ByteBuffer plainClient = allocateBuffer(1024); plainClient.limit(plainClient.capacity()); ByteBuffer encClientToServer = allocateBuffer(client.getSession().getPacketBufferSize()); ByteBuffer plainServer = allocateBuffer(server.getSession().getApplicationBufferSize()); handshake(client, server); SSLEngineResult result = client.wrap(plainClient, encClientToServer); assertEquals(SSLEngineResult.Status.OK, result.getStatus()); assertEquals(result.bytesConsumed(), plainClient.capacity()); // Flip so we can read it. encClientToServer.flip(); int remaining = encClientToServer.remaining(); // We limit the buffer so we have less then the header to read, this should result in an BUFFER_UNDERFLOW. encClientToServer.limit(SSL_RECORD_HEADER_LENGTH - 1); result = server.unwrap(encClientToServer, plainServer); assertResultIsBufferUnderflow(result); // We limit the buffer so we can read the header but not the rest, this should result in an // BUFFER_UNDERFLOW. encClientToServer.limit(SSL_RECORD_HEADER_LENGTH); result = server.unwrap(encClientToServer, plainServer); assertResultIsBufferUnderflow(result); // We limit the buffer so we can read the header and partly the rest, this should result in an // BUFFER_UNDERFLOW. encClientToServer.limit(SSL_RECORD_HEADER_LENGTH + remaining - 1 - SSL_RECORD_HEADER_LENGTH); result = server.unwrap(encClientToServer, plainServer); assertResultIsBufferUnderflow(result); // Reset limit so we can read the full record. encClientToServer.limit(remaining); result = server.unwrap(encClientToServer, plainServer); assertEquals(SSLEngineResult.Status.OK, result.getStatus()); assertEquals(result.bytesConsumed(), remaining); assertTrue(result.bytesProduced() > 0); } finally { cert.delete(); cleanupClientSslEngine(client); cleanupServerSslEngine(server); } }
Example 6
Source File: TlsHelper.java From an2linuxclient with GNU General Public License v3.0 | 4 votes |
public static SSLEngineResult.HandshakeStatus doHandshake(SSLEngine tlsEngine, ByteBuffer netDataBuf, OutputStream out, InputStream in){ try { ByteBuffer empty; /*Apparently on Android 4.4 (API_19) SSLEngine whines about BUFFER_OVERFLOW for this buffer even though nothing ever gets written to it*/ if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH){ empty = ByteBuffer.allocate(0); } else { empty = ByteBuffer.allocate(tlsEngine.getSession().getApplicationBufferSize()); } // ClientHello -> netDataBuf tlsEngine.wrap(empty, netDataBuf); netDataBuf.flip(); byte[] clientHello = new byte[netDataBuf.limit()]; netDataBuf.get(clientHello); out.write(ConnectionHelper.intToByteArray(clientHello.length)); out.write(clientHello); // netDataBuf <- ServerHello..ServerHelloDone int serverHelloSize = ByteBuffer.wrap(ConnectionHelper.readAll(4, in)).getInt(); byte[] serverHello = ConnectionHelper.readAll(serverHelloSize, in); netDataBuf.clear(); netDataBuf.put(serverHello); netDataBuf.flip(); SSLEngineResult result = tlsEngine.unwrap(netDataBuf, empty); while (result.getHandshakeStatus() == SSLEngineResult.HandshakeStatus.NEED_UNWRAP){ result = tlsEngine.unwrap(netDataBuf, empty); } Runnable task = tlsEngine.getDelegatedTask(); while (task != null){ task.run(); task = tlsEngine.getDelegatedTask(); } // [client]Certificate*..ClientKeyExchange..Finished -> netDataBuf netDataBuf.clear(); result = tlsEngine.wrap(empty, netDataBuf); while (result.getHandshakeStatus() == SSLEngineResult.HandshakeStatus.NEED_WRAP){ result = tlsEngine.wrap(empty, netDataBuf); } netDataBuf.flip(); byte[] clientKeyExchange = new byte[netDataBuf.limit()]; netDataBuf.get(clientKeyExchange); out.write(ConnectionHelper.intToByteArray(clientKeyExchange.length)); out.write(clientKeyExchange); // netDataBuf <- ChangeCipherSpec..Finished int serverChangeCipherSpecSize = ByteBuffer.wrap(ConnectionHelper.readAll(4, in)).getInt(); byte[] serverChangeCipherSpec = ConnectionHelper.readAll(serverChangeCipherSpecSize, in); netDataBuf.clear(); netDataBuf.put(serverChangeCipherSpec); netDataBuf.flip(); result = tlsEngine.unwrap(netDataBuf, empty); while (result.getHandshakeStatus() == SSLEngineResult.HandshakeStatus.NEED_UNWRAP){ result = tlsEngine.unwrap(netDataBuf, empty); } /*On Android 8.1 (LineageOS 15.1) on a Xiaomi device (not sure about others) the SSL_ENGINE may return NEED_WRAP here, so we do that even though no data gets written by the SSL_ENGINE ???*/ if (result.getHandshakeStatus() == SSLEngineResult.HandshakeStatus.NEED_WRAP) { netDataBuf.clear(); result = tlsEngine.wrap(empty, netDataBuf); // netDataBuf still empty here... } /*Apparently on Android 4.4 (API_19) with SSLEngine the latest call tlsEngine.unwrap(..) that finishes the handshake returns NOT_HANDSHAKING instead of FINISHED as the result*/ if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH){ return result.getHandshakeStatus(); } else { if (result.getHandshakeStatus() == SSLEngineResult.HandshakeStatus.NOT_HANDSHAKING){ return SSLEngineResult.HandshakeStatus.FINISHED; } else if (result.getHandshakeStatus() == SSLEngineResult.HandshakeStatus.FINISHED) { // just in case return result.getHandshakeStatus(); } else { return null; } } } catch (IOException e){ return null; } }
Example 7
Source File: Link.java From cloudstack with Apache License 2.0 | 4 votes |
private static HandshakeHolder doHandshakeUnwrap(final SocketChannel socketChannel, final SSLEngine sslEngine, ByteBuffer peerAppData, ByteBuffer peerNetData, final int appBufferSize) throws IOException { if (socketChannel == null || sslEngine == null || peerAppData == null || peerNetData == null || appBufferSize < 0) { return new HandshakeHolder(peerAppData, peerNetData, false); } if (socketChannel.read(peerNetData) < 0) { if (sslEngine.isInboundDone() && sslEngine.isOutboundDone()) { return new HandshakeHolder(peerAppData, peerNetData, false); } try { sslEngine.closeInbound(); } catch (SSLException e) { s_logger.warn("This SSL engine was forced to close inbound due to end of stream.", e); } sslEngine.closeOutbound(); // After closeOutbound the engine will be set to WRAP state, // in order to try to send a close message to the client. return new HandshakeHolder(peerAppData, peerNetData, true); } peerNetData.flip(); SSLEngineResult result = null; try { result = sslEngine.unwrap(peerNetData, peerAppData); peerNetData.compact(); } catch (final SSLException sslException) { s_logger.error(String.format("SSL error caught during unwrap data: %s, for local address=%s, remote address=%s. The client may have invalid ca-certificates.", sslException.getMessage(), socketChannel.getLocalAddress(), socketChannel.getRemoteAddress())); sslEngine.closeOutbound(); return new HandshakeHolder(peerAppData, peerNetData, false); } if (result == null) { return new HandshakeHolder(peerAppData, peerNetData, false); } switch (result.getStatus()) { case OK: break; case BUFFER_OVERFLOW: // Will occur when peerAppData's capacity is smaller than the data derived from peerNetData's unwrap. peerAppData = enlargeBuffer(peerAppData, appBufferSize); break; case BUFFER_UNDERFLOW: // Will occur either when no data was read from the peer or when the peerNetData buffer // was too small to hold all peer's data. peerNetData = handleBufferUnderflow(sslEngine, peerNetData); break; case CLOSED: if (sslEngine.isOutboundDone()) { return new HandshakeHolder(peerAppData, peerNetData, false); } else { sslEngine.closeOutbound(); } break; default: throw new IllegalStateException("Invalid SSL status: " + result.getStatus()); } return new HandshakeHolder(peerAppData, peerNetData, true); }
Example 8
Source File: ExportControlled.java From lams with GNU General Public License v2.0 | 4 votes |
/** * Perform the handshaking step of the TLS connection. We use the `sslEngine' along with the `channel' to exchange messages with the server to setup an * encrypted channel. * * @param sslEngine * {@link SSLEngine} * @param channel * {@link AsynchronousSocketChannel} * @throws SSLException * in case of handshake error */ private static void performTlsHandshake(SSLEngine sslEngine, AsynchronousSocketChannel channel) throws SSLException { sslEngine.beginHandshake(); HandshakeStatus handshakeStatus = sslEngine.getHandshakeStatus(); // Create byte buffers to use for holding application data int packetBufferSize = sslEngine.getSession().getPacketBufferSize(); ByteBuffer myNetData = ByteBuffer.allocate(packetBufferSize); ByteBuffer peerNetData = ByteBuffer.allocate(packetBufferSize); int appBufferSize = sslEngine.getSession().getApplicationBufferSize(); ByteBuffer myAppData = ByteBuffer.allocate(appBufferSize); ByteBuffer peerAppData = ByteBuffer.allocate(appBufferSize); SSLEngineResult res = null; while (handshakeStatus != HandshakeStatus.FINISHED && handshakeStatus != HandshakeStatus.NOT_HANDSHAKING) { switch (handshakeStatus) { case NEED_WRAP: myNetData.clear(); res = sslEngine.wrap(myAppData, myNetData); handshakeStatus = res.getHandshakeStatus(); switch (res.getStatus()) { case OK: myNetData.flip(); write(channel, myNetData); break; case BUFFER_OVERFLOW: case BUFFER_UNDERFLOW: case CLOSED: throw new CJCommunicationsException("Unacceptable SSLEngine result: " + res); } break; case NEED_UNWRAP: peerNetData.flip(); // Process incoming handshaking data res = sslEngine.unwrap(peerNetData, peerAppData); handshakeStatus = res.getHandshakeStatus(); switch (res.getStatus()) { case OK: peerNetData.compact(); break; case BUFFER_OVERFLOW: // Check if we need to enlarge the peer application data buffer. final int newPeerAppDataSize = sslEngine.getSession().getApplicationBufferSize(); if (newPeerAppDataSize > peerAppData.capacity()) { // enlarge the peer application data buffer ByteBuffer newPeerAppData = ByteBuffer.allocate(newPeerAppDataSize); newPeerAppData.put(peerAppData); newPeerAppData.flip(); peerAppData = newPeerAppData; } else { peerAppData.compact(); } break; case BUFFER_UNDERFLOW: // Check if we need to enlarge the peer network packet buffer final int newPeerNetDataSize = sslEngine.getSession().getPacketBufferSize(); if (newPeerNetDataSize > peerNetData.capacity()) { // enlarge the peer network packet buffer ByteBuffer newPeerNetData = ByteBuffer.allocate(newPeerNetDataSize); newPeerNetData.put(peerNetData); newPeerNetData.flip(); peerNetData = newPeerNetData; } else { peerNetData.compact(); } // obtain more inbound network data and then retry the operation if (read(channel, peerNetData) < 0) { throw new CJCommunicationsException("Server does not provide enough data to proceed with SSL handshake."); } break; case CLOSED: throw new CJCommunicationsException("Unacceptable SSLEngine result: " + res); } break; case NEED_TASK: sslEngine.getDelegatedTask().run(); handshakeStatus = sslEngine.getHandshakeStatus(); break; case FINISHED: case NOT_HANDSHAKING: break; } } }
Example 9
Source File: TlsHelper.java From an2linuxclient with GNU General Public License v3.0 | 4 votes |
public static SSLEngineResult.HandshakeStatus doHandshake(SSLEngine tlsEngine, ByteBuffer netDataBuf, OutputStream out, InputStream in){ try { ByteBuffer empty; /*Apparently on Android 4.4 (API_19) SSLEngine whines about BUFFER_OVERFLOW for this buffer even though nothing ever gets written to it*/ if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH){ empty = ByteBuffer.allocate(0); } else { empty = ByteBuffer.allocate(tlsEngine.getSession().getApplicationBufferSize()); } // ClientHello -> netDataBuf tlsEngine.wrap(empty, netDataBuf); netDataBuf.flip(); byte[] clientHello = new byte[netDataBuf.limit()]; netDataBuf.get(clientHello); out.write(ConnectionHelper.intToByteArray(clientHello.length)); out.write(clientHello); // netDataBuf <- ServerHello..ServerHelloDone int serverHelloSize = ByteBuffer.wrap(ConnectionHelper.readAll(4, in)).getInt(); byte[] serverHello = ConnectionHelper.readAll(serverHelloSize, in); netDataBuf.clear(); netDataBuf.put(serverHello); netDataBuf.flip(); SSLEngineResult result = tlsEngine.unwrap(netDataBuf, empty); while (result.getHandshakeStatus() == SSLEngineResult.HandshakeStatus.NEED_UNWRAP){ result = tlsEngine.unwrap(netDataBuf, empty); } Runnable task = tlsEngine.getDelegatedTask(); while (task != null){ task.run(); task = tlsEngine.getDelegatedTask(); } // [client]Certificate*..ClientKeyExchange..Finished -> netDataBuf netDataBuf.clear(); result = tlsEngine.wrap(empty, netDataBuf); while (result.getHandshakeStatus() == SSLEngineResult.HandshakeStatus.NEED_WRAP){ result = tlsEngine.wrap(empty, netDataBuf); } netDataBuf.flip(); byte[] clientKeyExchange = new byte[netDataBuf.limit()]; netDataBuf.get(clientKeyExchange); out.write(ConnectionHelper.intToByteArray(clientKeyExchange.length)); out.write(clientKeyExchange); // netDataBuf <- ChangeCipherSpec..Finished int serverChangeCipherSpecSize = ByteBuffer.wrap(ConnectionHelper.readAll(4, in)).getInt(); byte[] serverChangeCipherSpec = ConnectionHelper.readAll(serverChangeCipherSpecSize, in); netDataBuf.clear(); netDataBuf.put(serverChangeCipherSpec); netDataBuf.flip(); result = tlsEngine.unwrap(netDataBuf, empty); while (result.getHandshakeStatus() == SSLEngineResult.HandshakeStatus.NEED_UNWRAP){ result = tlsEngine.unwrap(netDataBuf, empty); } /*On Android 8.1 (LineageOS 15.1) on a Xiaomi device (not sure about others) the SSL_ENGINE may return NEED_WRAP here, so we do that even though no data gets written by the SSL_ENGINE ???*/ if (result.getHandshakeStatus() == SSLEngineResult.HandshakeStatus.NEED_WRAP) { netDataBuf.clear(); result = tlsEngine.wrap(empty, netDataBuf); // netDataBuf still empty here... } /*Apparently on Android 4.4 (API_19) with SSLEngine the latest call tlsEngine.unwrap(..) that finishes the handshake returns NOT_HANDSHAKING instead of FINISHED as the result*/ if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH){ return result.getHandshakeStatus(); } else { if (result.getHandshakeStatus() == SSLEngineResult.HandshakeStatus.NOT_HANDSHAKING){ return SSLEngineResult.HandshakeStatus.FINISHED; } else if (result.getHandshakeStatus() == SSLEngineResult.HandshakeStatus.FINISHED) { // just in case return result.getHandshakeStatus(); } else { return null; } } } catch (IOException e){ return null; } }
Example 10
Source File: TestTLS12.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
public static void run() throws Exception { SSLEngine[][] enginesToTest = getSSLEnginesToTest(); for (SSLEngine[] engineToTest : enginesToTest) { SSLEngine clientSSLEngine = engineToTest[0]; SSLEngine serverSSLEngine = engineToTest[1]; // SSLEngine code based on RedhandshakeFinished.java boolean dataDone = false; ByteBuffer clientOut = null; ByteBuffer clientIn = null; ByteBuffer serverOut = null; ByteBuffer serverIn = null; ByteBuffer cTOs; ByteBuffer sTOc; SSLSession session = clientSSLEngine.getSession(); int appBufferMax = session.getApplicationBufferSize(); int netBufferMax = session.getPacketBufferSize(); clientIn = ByteBuffer.allocate(appBufferMax + 50); serverIn = ByteBuffer.allocate(appBufferMax + 50); cTOs = ByteBuffer.allocateDirect(netBufferMax); sTOc = ByteBuffer.allocateDirect(netBufferMax); clientOut = ByteBuffer.wrap( "Hi Server, I'm Client".getBytes()); serverOut = ByteBuffer.wrap( "Hello Client, I'm Server".getBytes()); SSLEngineResult clientResult; SSLEngineResult serverResult; while (!dataDone) { clientResult = clientSSLEngine.wrap(clientOut, cTOs); runDelegatedTasks(clientResult, clientSSLEngine); serverResult = serverSSLEngine.wrap(serverOut, sTOc); runDelegatedTasks(serverResult, serverSSLEngine); cTOs.flip(); sTOc.flip(); if (enableDebug) { System.out.println("Client -> Network"); printTlsNetworkPacket("", cTOs); System.out.println(""); System.out.println("Server -> Network"); printTlsNetworkPacket("", sTOc); System.out.println(""); } clientResult = clientSSLEngine.unwrap(sTOc, clientIn); runDelegatedTasks(clientResult, clientSSLEngine); serverResult = serverSSLEngine.unwrap(cTOs, serverIn); runDelegatedTasks(serverResult, serverSSLEngine); cTOs.compact(); sTOc.compact(); if (!dataDone && (clientOut.limit() == serverIn.position()) && (serverOut.limit() == clientIn.position())) { checkTransfer(serverOut, clientIn); checkTransfer(clientOut, serverIn); dataDone = true; } } } }
Example 11
Source File: TestTLS12.java From jdk8u_jdk with GNU General Public License v2.0 | 4 votes |
public static void run() throws Exception { SSLEngine[][] enginesToTest = getSSLEnginesToTest(); for (SSLEngine[] engineToTest : enginesToTest) { SSLEngine clientSSLEngine = engineToTest[0]; SSLEngine serverSSLEngine = engineToTest[1]; // SSLEngine code based on RedhandshakeFinished.java boolean dataDone = false; ByteBuffer clientOut = null; ByteBuffer clientIn = null; ByteBuffer serverOut = null; ByteBuffer serverIn = null; ByteBuffer cTOs; ByteBuffer sTOc; SSLSession session = clientSSLEngine.getSession(); int appBufferMax = session.getApplicationBufferSize(); int netBufferMax = session.getPacketBufferSize(); clientIn = ByteBuffer.allocate(appBufferMax + 50); serverIn = ByteBuffer.allocate(appBufferMax + 50); cTOs = ByteBuffer.allocateDirect(netBufferMax); sTOc = ByteBuffer.allocateDirect(netBufferMax); clientOut = ByteBuffer.wrap( "Hi Server, I'm Client".getBytes()); serverOut = ByteBuffer.wrap( "Hello Client, I'm Server".getBytes()); SSLEngineResult clientResult; SSLEngineResult serverResult; while (!dataDone) { clientResult = clientSSLEngine.wrap(clientOut, cTOs); runDelegatedTasks(clientResult, clientSSLEngine); serverResult = serverSSLEngine.wrap(serverOut, sTOc); runDelegatedTasks(serverResult, serverSSLEngine); cTOs.flip(); sTOc.flip(); if (enableDebug) { System.out.println("Client -> Network"); printTlsNetworkPacket("", cTOs); System.out.println(""); System.out.println("Server -> Network"); printTlsNetworkPacket("", sTOc); System.out.println(""); } clientResult = clientSSLEngine.unwrap(sTOc, clientIn); runDelegatedTasks(clientResult, clientSSLEngine); serverResult = serverSSLEngine.unwrap(cTOs, serverIn); runDelegatedTasks(serverResult, serverSSLEngine); cTOs.compact(); sTOc.compact(); if (!dataDone && (clientOut.limit() == serverIn.position()) && (serverOut.limit() == clientIn.position())) { checkTransfer(serverOut, clientIn); checkTransfer(clientOut, serverIn); dataDone = true; } } } }
Example 12
Source File: TestTLS12.java From TencentKona-8 with GNU General Public License v2.0 | 4 votes |
public static void run() throws Exception { SSLEngine[][] enginesToTest = getSSLEnginesToTest(); for (SSLEngine[] engineToTest : enginesToTest) { SSLEngine clientSSLEngine = engineToTest[0]; SSLEngine serverSSLEngine = engineToTest[1]; // SSLEngine code based on RedhandshakeFinished.java boolean dataDone = false; ByteBuffer clientOut = null; ByteBuffer clientIn = null; ByteBuffer serverOut = null; ByteBuffer serverIn = null; ByteBuffer cTOs; ByteBuffer sTOc; SSLSession session = clientSSLEngine.getSession(); int appBufferMax = session.getApplicationBufferSize(); int netBufferMax = session.getPacketBufferSize(); clientIn = ByteBuffer.allocate(appBufferMax + 50); serverIn = ByteBuffer.allocate(appBufferMax + 50); cTOs = ByteBuffer.allocateDirect(netBufferMax); sTOc = ByteBuffer.allocateDirect(netBufferMax); clientOut = ByteBuffer.wrap( "Hi Server, I'm Client".getBytes()); serverOut = ByteBuffer.wrap( "Hello Client, I'm Server".getBytes()); SSLEngineResult clientResult; SSLEngineResult serverResult; while (!dataDone) { clientResult = clientSSLEngine.wrap(clientOut, cTOs); runDelegatedTasks(clientResult, clientSSLEngine); serverResult = serverSSLEngine.wrap(serverOut, sTOc); runDelegatedTasks(serverResult, serverSSLEngine); cTOs.flip(); sTOc.flip(); if (enableDebug) { System.out.println("Client -> Network"); printTlsNetworkPacket("", cTOs); System.out.println(""); System.out.println("Server -> Network"); printTlsNetworkPacket("", sTOc); System.out.println(""); } clientResult = clientSSLEngine.unwrap(sTOc, clientIn); runDelegatedTasks(clientResult, clientSSLEngine); serverResult = serverSSLEngine.unwrap(cTOs, serverIn); runDelegatedTasks(serverResult, serverSSLEngine); cTOs.compact(); sTOc.compact(); if (!dataDone && (clientOut.limit() == serverIn.position()) && (serverOut.limit() == clientIn.position())) { checkTransfer(serverOut, clientIn); checkTransfer(clientOut, serverIn); dataDone = true; } } } }
Example 13
Source File: TestTLS12.java From dragonwell8_jdk with GNU General Public License v2.0 | 4 votes |
public static void run() throws Exception { SSLEngine[][] enginesToTest = getSSLEnginesToTest(); for (SSLEngine[] engineToTest : enginesToTest) { SSLEngine clientSSLEngine = engineToTest[0]; SSLEngine serverSSLEngine = engineToTest[1]; // SSLEngine code based on RedhandshakeFinished.java boolean dataDone = false; ByteBuffer clientOut = null; ByteBuffer clientIn = null; ByteBuffer serverOut = null; ByteBuffer serverIn = null; ByteBuffer cTOs; ByteBuffer sTOc; SSLSession session = clientSSLEngine.getSession(); int appBufferMax = session.getApplicationBufferSize(); int netBufferMax = session.getPacketBufferSize(); clientIn = ByteBuffer.allocate(appBufferMax + 50); serverIn = ByteBuffer.allocate(appBufferMax + 50); cTOs = ByteBuffer.allocateDirect(netBufferMax); sTOc = ByteBuffer.allocateDirect(netBufferMax); clientOut = ByteBuffer.wrap( "Hi Server, I'm Client".getBytes()); serverOut = ByteBuffer.wrap( "Hello Client, I'm Server".getBytes()); SSLEngineResult clientResult; SSLEngineResult serverResult; while (!dataDone) { clientResult = clientSSLEngine.wrap(clientOut, cTOs); runDelegatedTasks(clientResult, clientSSLEngine); serverResult = serverSSLEngine.wrap(serverOut, sTOc); runDelegatedTasks(serverResult, serverSSLEngine); cTOs.flip(); sTOc.flip(); if (enableDebug) { System.out.println("Client -> Network"); printTlsNetworkPacket("", cTOs); System.out.println(""); System.out.println("Server -> Network"); printTlsNetworkPacket("", sTOc); System.out.println(""); } clientResult = clientSSLEngine.unwrap(sTOc, clientIn); runDelegatedTasks(clientResult, clientSSLEngine); serverResult = serverSSLEngine.unwrap(cTOs, serverIn); runDelegatedTasks(serverResult, serverSSLEngine); cTOs.compact(); sTOc.compact(); if (!dataDone && (clientOut.limit() == serverIn.position()) && (serverOut.limit() == clientIn.position())) { checkTransfer(serverOut, clientIn); checkTransfer(clientOut, serverIn); dataDone = true; } } } }
Example 14
Source File: SSLEngineTest.java From netty-4.1.22 with Apache License 2.0 | 4 votes |
@Test public void testMultipleRecordsInOneBufferBiggerThenPacketBufferSize() throws Exception { SelfSignedCertificate cert = new SelfSignedCertificate(); clientSslCtx = SslContextBuilder .forClient() .trustManager(cert.cert()) .sslProvider(sslClientProvider()) .build(); SSLEngine client = clientSslCtx.newEngine(UnpooledByteBufAllocator.DEFAULT); serverSslCtx = SslContextBuilder .forServer(cert.certificate(), cert.privateKey()) .sslProvider(sslServerProvider()) .build(); SSLEngine server = serverSslCtx.newEngine(UnpooledByteBufAllocator.DEFAULT); try { ByteBuffer plainClientOut = allocateBuffer(4096); ByteBuffer plainServerOut = allocateBuffer(server.getSession().getApplicationBufferSize()); ByteBuffer encClientToServer = allocateBuffer(server.getSession().getPacketBufferSize() * 2); handshake(client, server); int srcLen = plainClientOut.remaining(); SSLEngineResult result; while (encClientToServer.position() <= server.getSession().getPacketBufferSize()) { result = client.wrap(plainClientOut, encClientToServer); assertEquals(SSLEngineResult.Status.OK, result.getStatus()); assertEquals(srcLen, result.bytesConsumed()); assertTrue(result.bytesProduced() > 0); plainClientOut.clear(); } encClientToServer.flip(); result = server.unwrap(encClientToServer, plainServerOut); assertEquals(SSLEngineResult.Status.OK, result.getStatus()); assertTrue(result.bytesConsumed() > 0); assertTrue(result.bytesProduced() > 0); } finally { cert.delete(); cleanupClientSslEngine(client); cleanupServerSslEngine(server); } }
Example 15
Source File: SSLEngineTest.java From netty-4.1.22 with Apache License 2.0 | 4 votes |
@Test public void testMultipleRecordsInOneBufferWithNonZeroPosition() throws Exception { SelfSignedCertificate cert = new SelfSignedCertificate(); clientSslCtx = SslContextBuilder .forClient() .trustManager(cert.cert()) .sslProvider(sslClientProvider()) .build(); SSLEngine client = clientSslCtx.newEngine(UnpooledByteBufAllocator.DEFAULT); serverSslCtx = SslContextBuilder .forServer(cert.certificate(), cert.privateKey()) .sslProvider(sslServerProvider()) .build(); SSLEngine server = serverSslCtx.newEngine(UnpooledByteBufAllocator.DEFAULT); try { // Choose buffer size small enough that we can put multiple buffers into one buffer and pass it into the // unwrap call without exceed MAX_ENCRYPTED_PACKET_LENGTH. ByteBuffer plainClientOut = allocateBuffer(1024); ByteBuffer plainServerOut = allocateBuffer(server.getSession().getApplicationBufferSize()); ByteBuffer encClientToServer = allocateBuffer(client.getSession().getPacketBufferSize()); int positionOffset = 1; // We need to be able to hold 2 records + positionOffset ByteBuffer combinedEncClientToServer = allocateBuffer( encClientToServer.capacity() * 2 + positionOffset); combinedEncClientToServer.position(positionOffset); handshake(client, server); plainClientOut.limit(plainClientOut.capacity()); SSLEngineResult result = client.wrap(plainClientOut, encClientToServer); assertEquals(plainClientOut.capacity(), result.bytesConsumed()); assertTrue(result.bytesProduced() > 0); encClientToServer.flip(); // Copy the first record into the combined buffer combinedEncClientToServer.put(encClientToServer); plainClientOut.clear(); encClientToServer.clear(); result = client.wrap(plainClientOut, encClientToServer); assertEquals(plainClientOut.capacity(), result.bytesConsumed()); assertTrue(result.bytesProduced() > 0); encClientToServer.flip(); int encClientToServerLen = encClientToServer.remaining(); // Copy the first record into the combined buffer combinedEncClientToServer.put(encClientToServer); encClientToServer.clear(); combinedEncClientToServer.flip(); combinedEncClientToServer.position(positionOffset); // Ensure we have the first record and a tiny amount of the second record in the buffer combinedEncClientToServer.limit( combinedEncClientToServer.limit() - (encClientToServerLen - positionOffset)); result = server.unwrap(combinedEncClientToServer, plainServerOut); assertEquals(encClientToServerLen, result.bytesConsumed()); assertTrue(result.bytesProduced() > 0); } finally { cert.delete(); cleanupClientSslEngine(client); cleanupServerSslEngine(server); } }
Example 16
Source File: SSLEngineTest.java From netty-4.1.22 with Apache License 2.0 | 4 votes |
protected void handshake(SSLEngine clientEngine, SSLEngine serverEngine) throws SSLException { ByteBuffer cTOs = allocateBuffer(clientEngine.getSession().getPacketBufferSize()); ByteBuffer sTOc = allocateBuffer(serverEngine.getSession().getPacketBufferSize()); ByteBuffer serverAppReadBuffer = allocateBuffer( serverEngine.getSession().getApplicationBufferSize()); ByteBuffer clientAppReadBuffer = allocateBuffer( clientEngine.getSession().getApplicationBufferSize()); clientEngine.beginHandshake(); serverEngine.beginHandshake(); ByteBuffer empty = allocateBuffer(0); SSLEngineResult clientResult; SSLEngineResult serverResult; boolean clientHandshakeFinished = false; boolean serverHandshakeFinished = false; do { int cTOsPos = cTOs.position(); int sTOcPos = sTOc.position(); if (!clientHandshakeFinished) { clientResult = clientEngine.wrap(empty, cTOs); runDelegatedTasks(clientResult, clientEngine); assertEquals(empty.remaining(), clientResult.bytesConsumed()); assertEquals(cTOs.position() - cTOsPos, clientResult.bytesProduced()); if (isHandshakeFinished(clientResult)) { clientHandshakeFinished = true; } } if (!serverHandshakeFinished) { serverResult = serverEngine.wrap(empty, sTOc); runDelegatedTasks(serverResult, serverEngine); assertEquals(empty.remaining(), serverResult.bytesConsumed()); assertEquals(sTOc.position() - sTOcPos, serverResult.bytesProduced()); if (isHandshakeFinished(serverResult)) { serverHandshakeFinished = true; } } cTOs.flip(); sTOc.flip(); cTOsPos = cTOs.position(); sTOcPos = sTOc.position(); if (!clientHandshakeFinished) { int clientAppReadBufferPos = clientAppReadBuffer.position(); clientResult = clientEngine.unwrap(sTOc, clientAppReadBuffer); runDelegatedTasks(clientResult, clientEngine); assertEquals(sTOc.position() - sTOcPos, clientResult.bytesConsumed()); assertEquals(clientAppReadBuffer.position() - clientAppReadBufferPos, clientResult.bytesProduced()); if (isHandshakeFinished(clientResult)) { clientHandshakeFinished = true; } } else { assertFalse(sTOc.hasRemaining()); } if (!serverHandshakeFinished) { int serverAppReadBufferPos = serverAppReadBuffer.position(); serverResult = serverEngine.unwrap(cTOs, serverAppReadBuffer); runDelegatedTasks(serverResult, serverEngine); assertEquals(cTOs.position() - cTOsPos, serverResult.bytesConsumed()); assertEquals(serverAppReadBuffer.position() - serverAppReadBufferPos, serverResult.bytesProduced()); if (isHandshakeFinished(serverResult)) { serverHandshakeFinished = true; } } else { assertFalse(cTOs.hasRemaining()); } sTOc.compact(); cTOs.compact(); } while (!clientHandshakeFinished || !serverHandshakeFinished); }
Example 17
Source File: OpenSslEngineTest.java From netty-4.1.22 with Apache License 2.0 | 4 votes |
@Test public void testBufferUnderFlowAvoidedIfJDKCompatabilityModeOff() throws Exception { SelfSignedCertificate cert = new SelfSignedCertificate(); clientSslCtx = SslContextBuilder .forClient() .trustManager(cert.cert()) .sslProvider(sslClientProvider()) .build(); SSLEngine client = clientSslCtx.newHandler(UnpooledByteBufAllocator.DEFAULT).engine(); serverSslCtx = SslContextBuilder .forServer(cert.certificate(), cert.privateKey()) .sslProvider(sslServerProvider()) .build(); SSLEngine server = serverSslCtx.newHandler(UnpooledByteBufAllocator.DEFAULT).engine(); try { ByteBuffer plainClient = allocateBuffer(1024); plainClient.limit(plainClient.capacity()); ByteBuffer encClientToServer = allocateBuffer(client.getSession().getPacketBufferSize()); ByteBuffer plainServer = allocateBuffer(server.getSession().getApplicationBufferSize()); handshake(client, server); SSLEngineResult result = client.wrap(plainClient, encClientToServer); assertEquals(SSLEngineResult.Status.OK, result.getStatus()); assertEquals(result.bytesConsumed(), plainClient.capacity()); // Flip so we can read it. encClientToServer.flip(); int remaining = encClientToServer.remaining(); // We limit the buffer so we have less then the header to read, this should result in an BUFFER_UNDERFLOW. encClientToServer.limit(SslUtils.SSL_RECORD_HEADER_LENGTH - 1); result = server.unwrap(encClientToServer, plainServer); assertEquals(SSLEngineResult.Status.OK, result.getStatus()); assertEquals(SslUtils.SSL_RECORD_HEADER_LENGTH - 1, result.bytesConsumed()); assertEquals(0, result.bytesProduced()); remaining -= result.bytesConsumed(); // We limit the buffer so we can read the header but not the rest, this should result in an // BUFFER_UNDERFLOW. encClientToServer.limit(SslUtils.SSL_RECORD_HEADER_LENGTH); result = server.unwrap(encClientToServer, plainServer); assertEquals(SSLEngineResult.Status.OK, result.getStatus()); assertEquals(1, result.bytesConsumed()); assertEquals(0, result.bytesProduced()); remaining -= result.bytesConsumed(); // We limit the buffer so we can read the header and partly the rest, this should result in an // BUFFER_UNDERFLOW. encClientToServer.limit( SslUtils.SSL_RECORD_HEADER_LENGTH + remaining - 1 - SslUtils.SSL_RECORD_HEADER_LENGTH); result = server.unwrap(encClientToServer, plainServer); assertEquals(SSLEngineResult.Status.OK, result.getStatus()); assertEquals(encClientToServer.limit() - SslUtils.SSL_RECORD_HEADER_LENGTH, result.bytesConsumed()); assertEquals(0, result.bytesProduced()); remaining -= result.bytesConsumed(); // Reset limit so we can read the full record. encClientToServer.limit(remaining); assertEquals(0, encClientToServer.remaining()); result = server.unwrap(encClientToServer, plainServer); assertEquals(SSLEngineResult.Status.BUFFER_UNDERFLOW, result.getStatus()); assertEquals(0, result.bytesConsumed()); assertEquals(0, result.bytesProduced()); encClientToServer.position(0); result = server.unwrap(encClientToServer, plainServer); assertEquals(SSLEngineResult.Status.OK, result.getStatus()); assertEquals(remaining, result.bytesConsumed()); assertEquals(0, result.bytesProduced()); } finally { cert.delete(); cleanupClientSslEngine(client); cleanupServerSslEngine(server); } }
Example 18
Source File: ExportControlled.java From FoxTelem with GNU General Public License v3.0 | 4 votes |
/** * Perform the handshaking step of the TLS connection. We use the `sslEngine' along with the `channel' to exchange messages with the server to setup an * encrypted channel. * * @param sslEngine * {@link SSLEngine} * @param channel * {@link AsynchronousSocketChannel} * @throws SSLException * in case of handshake error */ private static void performTlsHandshake(SSLEngine sslEngine, AsynchronousSocketChannel channel) throws SSLException { sslEngine.beginHandshake(); HandshakeStatus handshakeStatus = sslEngine.getHandshakeStatus(); // Create byte buffers to use for holding application data int packetBufferSize = sslEngine.getSession().getPacketBufferSize(); ByteBuffer myNetData = ByteBuffer.allocate(packetBufferSize); ByteBuffer peerNetData = ByteBuffer.allocate(packetBufferSize); int appBufferSize = sslEngine.getSession().getApplicationBufferSize(); ByteBuffer myAppData = ByteBuffer.allocate(appBufferSize); ByteBuffer peerAppData = ByteBuffer.allocate(appBufferSize); SSLEngineResult res = null; while (handshakeStatus != HandshakeStatus.FINISHED && handshakeStatus != HandshakeStatus.NOT_HANDSHAKING) { switch (handshakeStatus) { case NEED_WRAP: myNetData.clear(); res = sslEngine.wrap(myAppData, myNetData); handshakeStatus = res.getHandshakeStatus(); switch (res.getStatus()) { case OK: myNetData.flip(); write(channel, myNetData); break; case BUFFER_OVERFLOW: case BUFFER_UNDERFLOW: case CLOSED: throw new CJCommunicationsException("Unacceptable SSLEngine result: " + res); } break; case NEED_UNWRAP: peerNetData.flip(); // Process incoming handshaking data res = sslEngine.unwrap(peerNetData, peerAppData); handshakeStatus = res.getHandshakeStatus(); switch (res.getStatus()) { case OK: peerNetData.compact(); break; case BUFFER_OVERFLOW: // Check if we need to enlarge the peer application data buffer. final int newPeerAppDataSize = sslEngine.getSession().getApplicationBufferSize(); if (newPeerAppDataSize > peerAppData.capacity()) { // enlarge the peer application data buffer ByteBuffer newPeerAppData = ByteBuffer.allocate(newPeerAppDataSize); newPeerAppData.put(peerAppData); newPeerAppData.flip(); peerAppData = newPeerAppData; } else { peerAppData.compact(); } break; case BUFFER_UNDERFLOW: // Check if we need to enlarge the peer network packet buffer final int newPeerNetDataSize = sslEngine.getSession().getPacketBufferSize(); if (newPeerNetDataSize > peerNetData.capacity()) { // enlarge the peer network packet buffer ByteBuffer newPeerNetData = ByteBuffer.allocate(newPeerNetDataSize); newPeerNetData.put(peerNetData); newPeerNetData.flip(); peerNetData = newPeerNetData; } else { peerNetData.compact(); } // obtain more inbound network data and then retry the operation if (read(channel, peerNetData) < 0) { throw new CJCommunicationsException("Server does not provide enough data to proceed with SSL handshake."); } break; case CLOSED: throw new CJCommunicationsException("Unacceptable SSLEngine result: " + res); } break; case NEED_TASK: sslEngine.getDelegatedTask().run(); handshakeStatus = sslEngine.getHandshakeStatus(); break; case FINISHED: case NOT_HANDSHAKING: break; } } }
Example 19
Source File: OpenSslEngineTest.java From netty-4.1.22 with Apache License 2.0 | 4 votes |
@Test public void testInputTooBigAndFillsUpBuffersJDKCompatabilityModeOff() throws Exception { SelfSignedCertificate cert = new SelfSignedCertificate(); clientSslCtx = SslContextBuilder .forClient() .trustManager(cert.cert()) .sslProvider(sslClientProvider()) .build(); SSLEngine client = clientSslCtx.newHandler(UnpooledByteBufAllocator.DEFAULT).engine(); serverSslCtx = SslContextBuilder .forServer(cert.certificate(), cert.privateKey()) .sslProvider(sslServerProvider()) .build(); SSLEngine server = serverSslCtx.newHandler(UnpooledByteBufAllocator.DEFAULT).engine(); try { ByteBuffer plainClient = allocateBuffer(MAX_PLAINTEXT_LENGTH + 100); ByteBuffer plainClient2 = allocateBuffer(512); ByteBuffer plainClientTotal = allocateBuffer(plainClient.capacity() + plainClient2.capacity()); plainClientTotal.put(plainClient); plainClientTotal.put(plainClient2); plainClient.clear(); plainClient2.clear(); plainClientTotal.flip(); // The capacity is designed to trigger an overflow condition. ByteBuffer encClientToServerTooSmall = allocateBuffer(MAX_PLAINTEXT_LENGTH + 28); ByteBuffer encClientToServer = allocateBuffer(client.getSession().getApplicationBufferSize()); ByteBuffer encClientToServerTotal = allocateBuffer(client.getSession().getApplicationBufferSize() << 1); ByteBuffer plainServer = allocateBuffer(server.getSession().getApplicationBufferSize() << 1); handshake(client, server); int plainClientRemaining = plainClient.remaining(); int encClientToServerTooSmallRemaining = encClientToServerTooSmall.remaining(); SSLEngineResult result = client.wrap(plainClient, encClientToServerTooSmall); assertEquals(SSLEngineResult.Status.OK, result.getStatus()); assertEquals(plainClientRemaining - plainClient.remaining(), result.bytesConsumed()); assertEquals(encClientToServerTooSmallRemaining - encClientToServerTooSmall.remaining(), result.bytesProduced()); result = client.wrap(plainClient, encClientToServerTooSmall); assertEquals(SSLEngineResult.Status.BUFFER_OVERFLOW, result.getStatus()); assertEquals(0, result.bytesConsumed()); assertEquals(0, result.bytesProduced()); plainClientRemaining = plainClient.remaining(); int encClientToServerRemaining = encClientToServer.remaining(); result = client.wrap(plainClient, encClientToServer); assertEquals(SSLEngineResult.Status.OK, result.getStatus()); assertEquals(plainClientRemaining, result.bytesConsumed()); assertEquals(encClientToServerRemaining - encClientToServer.remaining(), result.bytesProduced()); assertEquals(0, plainClient.remaining()); final int plainClient2Remaining = plainClient2.remaining(); encClientToServerRemaining = encClientToServer.remaining(); result = client.wrap(plainClient2, encClientToServer); assertEquals(SSLEngineResult.Status.OK, result.getStatus()); assertEquals(plainClient2Remaining, result.bytesConsumed()); assertEquals(encClientToServerRemaining - encClientToServer.remaining(), result.bytesProduced()); // Concatenate the too small buffer encClientToServerTooSmall.flip(); encClientToServer.flip(); encClientToServerTotal.put(encClientToServerTooSmall); encClientToServerTotal.put(encClientToServer); encClientToServerTotal.flip(); // Unwrap in a single call. final int encClientToServerTotalRemaining = encClientToServerTotal.remaining(); result = server.unwrap(encClientToServerTotal, plainServer); assertEquals(SSLEngineResult.Status.OK, result.getStatus()); assertEquals(encClientToServerTotalRemaining, result.bytesConsumed()); plainServer.flip(); assertEquals(plainClientTotal, plainServer); } finally { cert.delete(); cleanupClientSslEngine(client); cleanupServerSslEngine(server); } }
Example 20
Source File: OpenSslEngineTest.java From netty-4.1.22 with Apache License 2.0 | 4 votes |
@Test public void testMultipleRecordsInOneBufferWithNonZeroPositionJDKCompatabilityModeOff() throws Exception { SelfSignedCertificate cert = new SelfSignedCertificate(); clientSslCtx = SslContextBuilder .forClient() .trustManager(cert.cert()) .sslProvider(sslClientProvider()) .build(); SSLEngine client = clientSslCtx.newHandler(UnpooledByteBufAllocator.DEFAULT).engine(); serverSslCtx = SslContextBuilder .forServer(cert.certificate(), cert.privateKey()) .sslProvider(sslServerProvider()) .build(); SSLEngine server = serverSslCtx.newHandler(UnpooledByteBufAllocator.DEFAULT).engine(); try { // Choose buffer size small enough that we can put multiple buffers into one buffer and pass it into the // unwrap call without exceed MAX_ENCRYPTED_PACKET_LENGTH. final int plainClientOutLen = 1024; ByteBuffer plainClientOut = allocateBuffer(plainClientOutLen); ByteBuffer plainServerOut = allocateBuffer(server.getSession().getApplicationBufferSize()); ByteBuffer encClientToServer = allocateBuffer(client.getSession().getPacketBufferSize()); int positionOffset = 1; // We need to be able to hold 2 records + positionOffset ByteBuffer combinedEncClientToServer = allocateBuffer( encClientToServer.capacity() * 2 + positionOffset); combinedEncClientToServer.position(positionOffset); handshake(client, server); plainClientOut.limit(plainClientOut.capacity()); SSLEngineResult result = client.wrap(plainClientOut, encClientToServer); assertEquals(plainClientOut.capacity(), result.bytesConsumed()); assertTrue(result.bytesProduced() > 0); encClientToServer.flip(); // Copy the first record into the combined buffer combinedEncClientToServer.put(encClientToServer); plainClientOut.clear(); encClientToServer.clear(); result = client.wrap(plainClientOut, encClientToServer); assertEquals(plainClientOut.capacity(), result.bytesConsumed()); assertTrue(result.bytesProduced() > 0); encClientToServer.flip(); // Copy the first record into the combined buffer combinedEncClientToServer.put(encClientToServer); encClientToServer.clear(); combinedEncClientToServer.flip(); combinedEncClientToServer.position(positionOffset); // Make sure the limit takes positionOffset into account to the content we are looking at is correct. combinedEncClientToServer.limit( combinedEncClientToServer.limit() - positionOffset); final int combinedEncClientToServerLen = combinedEncClientToServer.remaining(); result = server.unwrap(combinedEncClientToServer, plainServerOut); assertEquals(0, combinedEncClientToServer.remaining()); assertEquals(combinedEncClientToServerLen, result.bytesConsumed()); assertEquals(plainClientOutLen, result.bytesProduced()); } finally { cert.delete(); cleanupClientSslEngine(client); cleanupServerSslEngine(server); } }