我正在使用非阻塞socketChannel和SSLEngine ssl服務器。因此,在成功握手之後,我讀取了套接字(第一次讀取了184字節/ 384字節),然後將此緩衝區傳遞給解包方法。解包方法拋出以下異常:SSLEngine:成功握手後解包時無效的TLS填充數據
javax.net.ssl.SSLHandshakeException: Invalid TLS padding data
at sun.security.ssl.Alerts.getSSLException(Unknown Source)
at sun.security.ssl.SSLEngineImpl.fatal(Unknown Source)
at sun.security.ssl.SSLEngineImpl.readRecord(Unknown Source)
at sun.security.ssl.SSLEngineImpl.readNetRecord(Unknown Source)
at sun.security.ssl.SSLEngineImpl.unwrap(Unknown Source)
at javax.net.ssl.SSLEngine.unwrap(Unknown Source)
但在情況下,我在第一時間閱讀所有字節(三百八十四分之三百八十四),然後我沒有得到這個例外。
我認爲,如果sslengine沒有足夠的字節來展開它將返回一個bufferUnderflow狀態。
我真的需要所有字節來調用unwrap方法嗎?如果是的話我怎麼能確定我讀取了非阻塞套接字的所有字節?
編輯:代碼:
public boolean doHandShake(SocketChannel socket) throws Exception{
if(!socket.isConnected()){
return false;
}
outAppData.clear();
inAppData.clear();
inNetData.clear();
outNetData.clear();
if(engine==null || socket==null)
return false;
engine.beginHandshake();
SSLEngineResult.HandshakeStatus hs = engine.getHandshakeStatus();
while (hs != SSLEngineResult.HandshakeStatus.FINISHED &&
hs != SSLEngineResult.HandshakeStatus.NOT_HANDSHAKING) {
switch (hs) {
case NEED_UNWRAP:
int read=1;
while (read > 0) {
read=socket.read(inNetData);
if(read==-1){
throw new IOException ("channel closed");
}
}
inNetData.flip();
engineRes=engine.unwrap(inNetData, outAppData);
inNetData.compact();
switch(engineRes.getStatus()){
case BUFFER_OVERFLOW:
System.out.println("overFlow");
break;
case CLOSED:
return false;
case OK:
//outAppData.clear();
// inNetData.clear();
break;
default:
break;
}
break;
case NEED_WRAP :
outNetData.clear();
engineRes=engine.wrap(inAppData, outNetData);
outNetData.flip();
switch (engineRes.getStatus()){
case BUFFER_OVERFLOW:
System.out.println("overFlow");
break;
case BUFFER_UNDERFLOW:
System.out.println("underFlowa");
break;
case CLOSED:
return false;
case OK:
//outNetData.flip();
while(outNetData.hasRemaining()){
if(socket.write(outNetData)<0){
throw new Exception("Channel Has been Closed");
}
}
break;
default:
break;
}
break;
case NEED_TASK :
Runnable r=engine.getDelegatedTask();
r.run();
break;
case FINISHED:
System.out.println("finished");
break;
case NOT_HANDSHAKING:
break;
default:
throw new IllegalArgumentException("Inexpected/Unhadled SSLEngineResult :"+hs);
}
hs = engine.getHandshakeStatus();
}
return true;
}
然後我讀取使用非阻塞信道184/384字節。
read = _socketChannel.read(buffer);
然後傳遞到buffer
進行解密:
public ByteBuffer decrypt(ByteBuffer inNetData) throws SSLException{
if(!isValidSession()){
return null;
}
outAppData.clear();
try{
engineRes=engine.unwrap(inNetData, outAppData);
}catch(Exception e){
e.printStackTrace();
}
inNetData.compact();
switch(engineRes.getStatus()){
case BUFFER_OVERFLOW:
outAppData=ByteBuffer.allocate(outNetData.capacity()*2);
inNetData.position(0);
return encrypt(inNetData);
case BUFFER_UNDERFLOW:
return null;
case CLOSED:
return null;
case OK:
outAppData.flip();
System.out.println(new String(outAppData.array(),0,400));
return outAppData;
default:
break;
}
return null;
}
異常在engine.unwrap被拋出 engineRes = engine.unwrap(inNetData,outAppData);
發佈一些代碼。 – EJP 2014-10-09 21:17:48
完成。請幫助 – user3791570 2014-10-10 03:08:12