how to use windows keystore to establise a ssl connection.

i have write a applet and signed it. this applet should download a file from a server by https and signed this file and then upload this file to server by https.
the certificate used to signed is the same to establish the connection https.
the orign probleme is: when my applet use a keystore like pkcs12 and jks it works perfectely. but when it try use the keysore of windows, i always get a
javax.net.ssl.SSLHandshakeException: Received fatal alert: decrypt_error

i can not paste all my programme here but i paste the most important.
i got my kstore ks by:
try {
// System.out.println("Test windows : "isWindows()" // test keystore : "type.equals("Keystore_Windows"));
if(isWindows() && type.equals("Keystore_Windows")){
System.out.println("Passé windows");
ks=KeyStore.getInstance("Windows-MY");
ks.load(null,null);
keystoreloaded=true;
}if(isMacOs()){
ks=KeyStore.getInstance("KeychainStore");
ks.load(null,null);
keystoreloaded=true;
}if((isWindows() && type.equals("Keystore_logiciel")) || isLinux()){
test();
char[] passwd=null;
JFileChooser keystorechooser = new JFileChooser();
keystorechooser.removeChoosableFileFilter(keystore chooser.getAcceptAllFileFilter());
keystorechooser.setDialogTitle("Ouverture du certificat");
keystorechooser.setFileFilter(new FileFilter() {

@Override
public String getDescription() {
return ".p12, .jks";
}

@Override
public boolean accept(File f) {
if (f.isDirectory()) {
return true;
} else {
String filename = f.getName().toUpperCase();
return filename.endsWith(".PFX") || filename.endsWith(".P12") || filename.endsWith(".JKS");
}
}
});
if(keystorechooser.showOpenDialog(null)==JFileChoo ser.APPROVE_OPTION){
File fileselected=keystorechooser.getSelectedFile();
if(fileselected.getName().toUpperCase().endsWith(" JKS")){
ks = KeyStore.getInstance("JKS");
typekeystore="JKS";

}else{
ks = KeyStore.getInstance("PKCS12");
typekeystore="P12";
passwd = getPassword(keystorechooser.getSelectedFile().getN ame());
}
InputStream is = new FileInputStream(fileselected);
System.out.println("Keystore utilisé : "+fileselected.getName());
if(!getKeystoreAnnule())
ks.load(is, passwd);
else
ks=null;
is.close();
here i get my pass of keystore

if(isWindows() && Type.equals("Keystore_Windows")){
pass="".toCharArray();
}else{
JPasswordField Field = new JPasswordField();
if (JOptionPane.OK_OPTION == JOptionPane.showOptionDialog(null,
Field, "Pass phrase : "+file, JOptionPane.OK_CANCEL_OPTION,
JOptionPane.QUESTION_MESSAGE, null, null, null)) {
pass = Field.getPassword();
}
here i get my alias
Vector<String> vect=new Vector<String>();
String alias="";
Enumeration<String> enumalias = ks.aliases();

for (; enumalias.hasMoreElements(); ) {
alias = (String)enumalias.nextElement();
if (ks.entryInstanceOf(alias, KeyStore.PrivateKeyEntry.class)) {
System.out.println("Certificat Alias:"+alias);
vect.add(alias);

}
}
if(typekeystore=="P12")
Alias=alias;
if(typekeystore=="JKS" || type.equals("Keystore_Windows"))
Alias=choix(vect);
=====
the function choix:
String[] elements=new String[vect.size()];
for(int i=0;i<vect.size();i+)
elements[i]=vect.elementAt(i);
String s=null;
s = (String)JOptionPane.showInputDialog(
null,
"Choisir l'Alias du certificat",
"Keystore",
JOptionPane.QUESTION_MESSAGE,
null,
elements, // les possibilités
1);
return s;
=============
here is the cod to establish the connection:
downloadFileUrl="https://.....";
Protocol myhttps = new Protocol("https", new AuthSSLProtocolSocketFactory(ks,alias,pass), 443);

Protocol.registerProtocol("https", myhttps);
HttpClient client = new HttpClient();
GetMethod get=new GetMethod(downloadFileUrl);
client.executeMethod(get);

and of course, the AuthSSLProtocolSocketFactory
public class AuthSSLProtocolSocketFactory implements SecureProtocolSocketFactory {
private static final Log LOG = LogFactory.getLog(AuthSSLProtocolSocketFactory.cla ss);

private SSLContext sslcontext = null;

private KeyStore _ks;
private String _alias;
private String _password;
public AuthSSLProtocolSocketFactory(KeyStore ks, String alias, String password)
{
super();
_ks = ks;
_alias = alias;
_password = password;
}

/

/

private KeyManager[] createKeyManagers()throws KeyStoreException, NoSuchAlgorithmException, UnrecoverableKeyException
{
KeyManager[] managers;
if (_alias != null) {
managers = new KeyManager[] { new AliasKeyManager(_ks, _alias, _password) };
} else {
// create a KeyManagerFactory from the keystore
KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
kmf.init(_ks, _password == null ? null : _password.toCharArray());
managers = kmf.getKeyManagers();
}
return managers;
}


private TrustManager[] createTrustAllManagers(){

TrustManager[] trustAllCerts = new TrustManager[] {
new X509TrustManager() {
public java.security.cert.X509Certificate[] getAcceptedIssuers(){
return null;
}
public void checkClientTrusted(java.security.cert.X509Certific ate[] certs, String authType) {}
public void checkServerTrusted(java.security.cert.X509Certific ate[] certs, String authType) {}
}
};

return trustAllCerts;
}

private SSLContext createSSLContext()
{
try
{
KeyManager[] managers;

managers=createKeyManagers();
SSLContext sc = SSLContext.getInstance("SSL");
sc.init(managers,createTrustAllManagers(), new java.security.SecureRandom());
return sc;

} catch (NoSuchAlgorithmException e) {
LOG.error(e.getMessage(), e);
throw new AuthSSLInitializationError("Unsupported algorithm exception: " e.getMessage());
} catch (KeyStoreException e) {
LOG.error(e.getMessage(), e);
throw new AuthSSLInitializationError("Keystore exception: " e.getMessage());
} catch (GeneralSecurityException e) {
LOG.error(e.getMessage(), e);
throw new AuthSSLInitializationError("Key management exception: " + e.getMessage());
}
}
private SSLContext getSSLContext() {
if (this.sslcontext == null) {
this.sslcontext = createSSLContext();
}
return this.sslcontext;
}
/*
Attempts to get a new socket connection to the given host within the given time limit.
<p>
To circumvent the limitations of older JREs that do not support connect timeout a
controller thread is executed. The controller thread attempts to create a new socket
within the given limit of time. If socket constructor does not return until the
timeout expires, the controller terminates and throws an {@link ConnectTimeoutException}
</p>

@param host the host name/IP
@param port the port on the host
@param clientHost the local host name/IP to bind the socket to
@param clientPort the port on the local machine
@param params {@link HttpConnectionParams Http connection parameters}

@return Socket a new socket

@throws IOException if an I/O error occurs while creating the socket
@throws UnknownHostException if the IP address of the host cannot be
determined
/
public Socket createSocket(
final String host,
final int port,
final InetAddress localAddress,
final int localPort,
final HttpConnectionParams params
) throws IOException, UnknownHostException, ConnectTimeoutException
{
if (params == null) {
throw new IllegalArgumentException("Parameters may not be null");
}
int timeout = params.getConnectionTimeout();
SocketFactory socketfactory = getSSLContext().getSocketFactory();
if (timeout == 0) {
return socketfactory.createSocket(host, port, localAddress, localPort);
} else {
Socket socket = socketfactory.createSocket();
SocketAddress localaddr = new InetSocketAddress(localAddress, localPort);
SocketAddress remoteaddr = new InetSocketAddress(host, port);
socket.bind(localaddr);
socket.connect(remoteaddr, timeout);
return socket;
}
}
/
@see SecureProtocolSocketFactory#createSocket(java.lang .String,int,java.net.InetAddress,int)
/
public Socket createSocket(
String host,
int port,
InetAddress clientHost,
int clientPort)
throws IOException, UnknownHostException
{
return getSSLContext().getSocketFactory().createSocket(ho st,port,clientHost, clientPort);
}
/
@see SecureProtocolSocketFactory#createSocket(java.lang .String,int)
/
public Socket createSocket(String host, int port)
throws IOException, UnknownHostException
{
return getSSLContext().getSocketFactory().createSocket(ho st,port);
}
/
@see SecureProtocolSocketFactory#createSocket(java.net. Socket,java.lang.String,int,boolean)
/
public Socket createSocket(Socket socket,String host,int port, boolean autoClose)
throws IOException, UnknownHostException
{
return getSSLContext().getSocketFactory().createSocket( socket,host,port,autoClose);
}
}
==================
i trust all server certificate, and i give my keytsore; alias and password to establish the connection

upup, i have not found a solution for this.