TLS 1.2 + Java 1.6 + BouncyCastle [英] TLS 1.2 + Java 1.6 + BouncyCastle
本文介绍了TLS 1.2 + Java 1.6 + BouncyCastle的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
为了支持使用TLS 1.2通过Java 1.6 API连接到远程主机的HTTPS连接，我们开发了一个基于Bouncy Castle Libraries的自定义TLS SocketConnection工厂（v.1.53）
For supporting HTTPS connections through a Java 1.6 API to remote hosts using TLS 1.2, we have developed a customized TLS SocketConnection factory based on Bouncy Castle Libraries (v. 1.53)
它非常易于使用，只需：
It's very easy to use, just:
String httpsURL = xxxxxxxxxx
URL myurl = new URL(httpsURL);
HttpsURLConnection con = (HttpsURLConnection )myurl.openConnection();
con.setSSLSocketFactory(new TSLSocketConnectionFactory());
InputStream ins = con.getInputStream();
在测试期间，我将不同的Web和远程主机连接到 SSLabs测试
During testing, I connect different web and remote hosts exposed into SSLabs Tests
90％的时间此工作正常！但是在某些情况下我们会遇到恼人的错误：内部TLS错误，这可能是攻击。已经检查过没有攻击。这是基于内部BouncyCastle异常处理的常见错误。 我正在尝试找到那些运气不佳的远程主机的常见模式。
90% of the time this works fine! But there are some cases in which we get an annoying error: "Internal TLS error, this could be an attack" . It has been checked that there is no attack. That's a common error based on the treatment of internal BouncyCastle exceptions. I'm trying to find a common pattern to those remote host that fails with little luck.
已更新：
更新一些代码以获取额外信息，我们得到：
Updating some code for extra information, we get this:
org.bouncycastle.crypto.tls.TlsFatalAlert: illegal_parameter(47)
at org.bouncycastle.crypto.tls.AbstractTlsClient.checkForUnexpectedServerExtension(AbstractTlsClient.java:56)
at org.bouncycastle.crypto.tls.AbstractTlsClient.processServerExtensions(AbstractTlsClient.java:207)
at org.bouncycastle.crypto.tls.TlsClientProtocol.receiveServerHelloMessage(TlsClientProtocol.java:773)
我得到的扩展类型是：
ExtensionType：11
ExtensionData：
ExtensionType:11 ExtensionData:
根据ExtensionType类，ec_point_formats。这导致UnexpectedServerExtension - >UnexpectedServerExtension导致 - > TlsFatalAlert：illegal_parameter，最后这是内部TLS错误，这可能是攻击
Acording to ExtensionType class, "ec_point_formats". This causes "UnexpectedServerExtension" --> The "UnexpectedServerExtension" causes a --> TlsFatalAlert: illegal_parameter , and at last this a "Internal TLS error, this could be an attack"
任何建议记录或追踪这个奇怪的TLS错误.... ????正如我所说的，这段代码可以正常运行90％...但是对于一些远程主机我得到了这个错误
Any advise to log or trace this strange TLS Errors....???? As i say, this code works 90%...but with some remote host i get this errof
这个技巧包括重写startHandShake以使用Bouncy的TLSClientProtocol：
The trick consists in overriding startHandShake to use Bouncy's TLSClientProtocol:
- 覆盖ClientExtensions以包含hostExtensionType。只是ExtensionType.server_name（可能还有更多要包含的扩展名吗？）
- 创建一个TlsAuthentication以在Socket的
peerCertificate上包含remoteCerts。还可以选择检查远程证书是否在
中默认密钥库（cacerts等..）
我共享TLSSocketConnectionFactory的代码：
I share the code of TLSSocketConnectionFactory:
public class TLSSocketConnectionFactory extends SSLSocketFactory {
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
//Adding Custom BouncyCastleProvider
///////////////////////////////////////////////////////////////////////////////////////////////////////////////
static {
if (Security.getProvider(BouncyCastleProvider.PROVIDER_NAME) == null) {
Security.addProvider(new BouncyCastleProvider());
}
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
//SECURE RANDOM
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
private SecureRandom _secureRandom = new SecureRandom();
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
//Adding Custom BouncyCastleProvider
///////////////////////////////////////////////////////////////////////////////////////////////////////////////
@Override
public Socket createSocket(Socket socket, final String host, int port, boolean arg3)
throws IOException {
if (socket == null) {
socket = new Socket();
}
if (!socket.isConnected()) {
socket.connect(new InetSocketAddress(host, port));
}
final TlsClientProtocol tlsClientProtocol = new TlsClientProtocol(socket.getInputStream(), socket.getOutputStream(), _secureRandom);
return _createSSLSocket(host, tlsClientProtocol);
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// SOCKET FACTORY METHODS
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@Override
public String[] getDefaultCipherSuites() {
return null;
}
@Override
public String[] getSupportedCipherSuites(){
return null;
}
@Override
public Socket createSocket( String host,
int port) throws IOException,UnknownHostException{
return null;
}
@Override
public Socket createSocket( InetAddress host,
int port) throws IOException {
return null;
}
@Override
public Socket createSocket( String host,
int port,
InetAddress localHost,
int localPort) throws IOException, UnknownHostException {
return null;
}
@Override
public Socket createSocket( InetAddress address,
int port,
InetAddress localAddress,
int localPort) throws IOException{
return null;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//SOCKET CREATION
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
private SSLSocket _createSSLSocket(final String host , final TlsClientProtocol tlsClientProtocol) {
return new SSLSocket() {
private java.security.cert.Certificate[] peertCerts;
@Override
public InputStream getInputStream() throws IOException {
return tlsClientProtocol.getInputStream();
}
@Override
public OutputStream getOutputStream() throws IOException {
return tlsClientProtocol.getOutputStream();
}
@Override
public synchronized void close() throws IOException {
Log.to("util").info("\\\n::::::Close Socket");
tlsClientProtocol.close();
}
@Override
public void addHandshakeCompletedListener(HandshakeCompletedListener arg0) {
}
@Override
public boolean getEnableSessionCreation() {
return false;
}
@Override
public String[] getEnabledCipherSuites() {
return null;
}
@Override
public String[] getEnabledProtocols() {
return null;
}
@Override
public boolean getNeedClientAuth(){
return false;
}
@Override
public SSLSession getSession() {
return new SSLSession() {
@Override
public int getApplicationBufferSize() {
return 0;
}
@Override
public String getCipherSuite() {
throw new UnsupportedOperationException();
}
@Override
public long getCreationTime() {
throw new UnsupportedOperationException();
}
@Override
public byte[] getId() {
throw new UnsupportedOperationException();
}
@Override
public long getLastAccessedTime() {
throw new UnsupportedOperationException();
}
@Override
public java.security.cert.Certificate[] getLocalCertificates() {
throw new UnsupportedOperationException();
}
@Override
public Principal getLocalPrincipal() {
throw new UnsupportedOperationException();
}
@Override
public int getPacketBufferSize() {
throw new UnsupportedOperationException();
}
@Override
public X509Certificate[] getPeerCertificateChain()
throws SSLPeerUnverifiedException {
return null;
}
@Override
public java.security.cert.Certificate[] getPeerCertificates()throws SSLPeerUnverifiedException {
return peertCerts;
}
@Override
public String getPeerHost() {
throw new UnsupportedOperationException();
}
@Override
public int getPeerPort() {
return 0;
}
@Override
public Principal getPeerPrincipal() throws SSLPeerUnverifiedException {
return null;
//throw new UnsupportedOperationException();
}
@Override
public String getProtocol() {
throw new UnsupportedOperationException();
}
@Override
public SSLSessionContext getSessionContext() {
throw new UnsupportedOperationException();
}
@Override
public Object getValue(String arg0) {
throw new UnsupportedOperationException();
}
@Override
public String[] getValueNames() {
throw new UnsupportedOperationException();
}
@Override
public void invalidate() {
throw new UnsupportedOperationException();
}
@Override
public boolean isValid() {
throw new UnsupportedOperationException();
}
@Override
public void putValue(String arg0, Object arg1) {
throw new UnsupportedOperationException();
}
@Override
public void removeValue(String arg0) {
throw new UnsupportedOperationException();
}
};
}
@Override
public String[] getSupportedProtocols() {
return null;
}
@Override
public boolean getUseClientMode() {
return false;
}
@Override
public boolean getWantClientAuth() {
return false;
}
@Override
public void removeHandshakeCompletedListener(HandshakeCompletedListener arg0) {
}
@Override
public void setEnableSessionCreation(boolean arg0) {
}
@Override
public void setEnabledCipherSuites(String[] arg0) {
}
@Override
public void setEnabledProtocols(String[] arg0) {
}
@Override
public void setNeedClientAuth(boolean arg0) {
}
@Override
public void setUseClientMode(boolean arg0) {
}
@Override
public void setWantClientAuth(boolean arg0) {
}
@Override
public String[] getSupportedCipherSuites() {
return null;
}
@Override
public void startHandshake() throws IOException {
Log.to("util").info("TSLSocketConnectionFactory:startHandshake()");
tlsClientProtocol.connect(new DefaultTlsClient() {
@SuppressWarnings("unchecked")
@Override
public Hashtable<Integer, byte[]> getClientExtensions() throws IOException {
Hashtable<Integer, byte[]> clientExtensions = super.getClientExtensions();
if (clientExtensions == null) {
clientExtensions = new Hashtable<Integer, byte[]>();
}
//Add host_name
byte[] host_name = host.getBytes();
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
final DataOutputStream dos = new DataOutputStream(baos);
dos.writeShort(host_name.length + 3);
dos.writeByte(0); //
dos.writeShort(host_name.length);
dos.write(host_name);
dos.close();
clientExtensions.put(ExtensionType.server_name, baos.toByteArray());
return clientExtensions;
}
@Override
public TlsAuthentication getAuthentication()
throws IOException {
return new TlsAuthentication() {
@Override
public void notifyServerCertificate(Certificate serverCertificate) throws IOException {
try {
KeyStore ks = _loadKeyStore();
Log.to("util").info(">>>>>>>> KeyStore : "+ks.size());
CertificateFactory cf = CertificateFactory.getInstance("X.509");
List<java.security.cert.Certificate> certs = new LinkedList<java.security.cert.Certificate>();
boolean trustedCertificate = false;
for ( org.bouncycastle.asn1.x509.Certificate c : serverCertificate.getCertificateList()) {
java.security.cert.Certificate cert = cf.generateCertificate(new ByteArrayInputStream(c.getEncoded()));
certs.add(cert);
String alias = ks.getCertificateAlias(cert);
if(alias != null) {
Log.to("util").info(">>> Trusted cert\n" + c.getSubject().toString());
if (cert instanceof java.security.cert.X509Certificate) {
try {
( (java.security.cert.X509Certificate) cert).checkValidity();
trustedCertificate = true;
Log.to("util").info("Certificate is active for current date\n"+cert);
} catch(CertificateExpiredException cee) {
R01FLog.to("r01f.util").info("Certificate is expired...");
}
}
} else {
Log.to("util").info(">>> Unknown cert " + c.getSubject().toString());
Log.to("util").fine(""+cert);
}
}
if (!trustedCertificate) {
throw new CertificateException("Unknown cert " + serverCertificate);
}
peertCerts = certs.toArray(new java.security.cert.Certificate[0]);
} catch (Exception ex) {
ex.printStackTrace();
throw new IOException(ex);
}
}
@Override
public TlsCredentials getClientCredentials(CertificateRequest arg0)
throws IOException {
return null;
}
/**
* Private method to load keyStore with system or default properties.
* @return
* @throws Exception
*/
private KeyStore _loadKeyStore() throws Exception {
FileInputStream trustStoreFis = null;
try {
String sysTrustStore = null;
File trustStoreFile = null;
KeyStore localKeyStore = null;
sysTrustStore = System.getProperty("javax.net.ssl.trustStore");
String javaHome;
if (!"NONE".equals(sysTrustStore)) {
if (sysTrustStore != null) {
trustStoreFile = new File(sysTrustStore);
trustStoreFis = _getFileInputStream(trustStoreFile);
} else {
javaHome = System.getProperty("java.home");
trustStoreFile = new File(javaHome + File.separator + "lib" + File.separator + "security" + File.separator + "jssecacerts");
if ((trustStoreFis = _getFileInputStream(trustStoreFile)) == null) {
trustStoreFile = new File(javaHome + File.separator + "lib" + File.separator + "security" + File.separator + "cacerts");
trustStoreFis = _getFileInputStream(trustStoreFile);
}
}
if (trustStoreFis != null) {
sysTrustStore = trustStoreFile.getPath();
} else {
sysTrustStore = "No File Available, using empty keystore.";
}
}
String trustStoreType = System.getProperty("javax.net.ssl.trustStoreType")!=null?System.getProperty("javax.net.ssl.trustStoreType"):KeyStore.getDefaultType();
String trustStoreProvider = System.getProperty("javax.net.ssl.trustStoreProvider")!=null?System.getProperty("javax.net.ssl.trustStoreProvider"):"";
if (trustStoreType.length() != 0) {
if (trustStoreProvider.length() == 0) {
localKeyStore = KeyStore.getInstance(trustStoreType);
} else {
localKeyStore = KeyStore.getInstance(trustStoreType, trustStoreProvider);
}
char[] keyStorePass = null;
String str5 = System.getProperty("javax.net.ssl.trustStorePassword")!=null?System.getProperty("javax.net.ssl.trustStorePassword"):"";
if (str5.length() != 0) {
keyStorePass = str5.toCharArray();
}
localKeyStore.load(trustStoreFis, (char[]) keyStorePass);
if (keyStorePass != null) {
for (int i = 0; i < keyStorePass.length; i++) {
keyStorePass[i] = 0;
}
}
}
return (KeyStore)localKeyStore;
} finally {
if (trustStoreFis != null) {
trustStoreFis.close();
}
}
}
private FileInputStream _getFileInputStream(File paramFile) throws Exception {
if (paramFile.exists()) {
return new FileInputStream(paramFile);
}
return null;
}
};
}
});
}
};//Socket
}
}
推荐答案
如果查看RFC 4492 5.2，您会看到服务器CAN发送ec_point_formats扩展，但只在协商ECC密码套件时才应该这样做。如果你希望TLSClient只是忽略额外的扩展而不是引发异常，我建议覆盖TlsClient.allowUnexpectedServerExtension（...）以允许ec_point_formats，就像默认实现允许的elltic_curves一样：
If you look at RFC 4492 5.2, you'll see that the server CAN send the "ec_point_formats" extension, but is only supposed to do so "when negotiating an ECC cipher suite". If you want TLSClient to just ignore the extra extension instead of raising an exception, I suggest overriding TlsClient.allowUnexpectedServerExtension(...) to allow ec_point_formats in the same way the default implementation allows elliptic_curves:
protected boolean allowUnexpectedServerExtension(Integer extensionType, byte[] extensionData)
throws IOException
{
switch (extensionType.intValue())
{
case ExtensionType.ec_point_formats:
/*
* Exception added based on field reports that some servers send Supported
* Point Format Extension even when not negotiating an ECC cipher suite.
* If present, we still require that it is a valid ECPointFormatList.
*/
TlsECCUtils.readSupportedPointFormatsExtension(extensionData);
return true;
default:
return super.allowUnexpectedServerExtension(extensionType, extensionData);
}
}
如果这是一个普遍存在的问题，我们可能会考虑添加这种情况是默认实现。
If this is a widespread problem, we might consider adding this case to the default implementation.
对于日志记录，有一些（TLSPeer）方法notifyAlertRaised和notifyAlertReceived，你可以覆盖你的TLSClient实现。
For logging, there are the (TLSPeer) methods notifyAlertRaised and notifyAlertReceived that you can override on your TLSClient implementation.
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