Signed Applet problems

Hi all,
I have a problem with one applet. I just built an applet (JDK 1.2) to download a file to the local machine; so far is OK, I got my digital certificate and I have signed the applet. Now when I test it in IE 5.x or 6.x it shows me the certificate and of course I trust, so it writes to the local hard drive, but when I try to test in Netscape 4.7 or greater; it shows me the certificate, I choose the "Trusted option" but I got the error:
access denied (java.io.FilePermission c:\mwSave.dll write)
I don't have any idea why if my applet is already signed and the certificate is valid I am getting this error... I am using a signed applet to do not use the policy file.... and should work, well I think that....
Any ideas....
Thanks in advance.

I have exatly the same problem but not with the class itself. I have the problem with an jar that my class calls.
I use jdk1.4.2. I think it's basicaly the same problem as "lfpgMW".
I'll also whould like an idea...
thanks

Similar Messages

Signed Applet problems in Vista + JMF

Hi All,
I'm new to Java Applet programming. I wrote an application which works as a VoIP Client in a webpage (Using JMF). Its working very fine in allmost all Windows XP machines.
But not in Windows Vista machines. In Vista i'm getting the following error :
"No permission to capture from applet" - Since its a Signed applet. The application is digitally signed from a CA. Even though its not working in Vista (IE and Mozilla Firefox also).
I have went through the following link which says IE in Vista will run on protected mode, so Signed Applet will not have all the permission eventhough its signed for "AllPermission".
----- http://java.sun.com/javase/6/webnotes/install/system-configurations.html
And also I'm not able to create a customized jar file for JMF using JMF Customizer. (JMF Customizer is an application which creates a jar file with specified classes). While creating a jar file I'm getting particular class is not available. (In Windows XP, this class is compilled at run time).
Please let me know the following things,
a) Is there any security settings i have to make to run Signed Applet in Windows Vista ?
b) What is Java Policy file? I don't have any policy file - will it affect the application ?
c) Do I need to sign each applet (say i have 5 applets in single jar file) ?
d) In Vista how Mozilla Firefox are running (like IE7's restricted environment or XP compatiable mode) ?
Thanks in Advance,
Karthikeyan R

I have exatly the same problem but not with the class itself. I have the problem with an jar that my class calls.
I use jdk1.4.2. I think it's basicaly the same problem as "lfpgMW".
I'll also whould like an idea...
thanks

Signed applet : problem signing jar files that are in build path

Hello,
I have a problem while trying to create an ftp applet.
I use org.apache.commons.net.ftp and i build path for commons-net-1.1.4.jar and then i build my classes.
When i create a jar file with my classes and after signing it, it works under eclipse but not on a web page.
I had signed commons-net-1.1.4.jar before to build the path in eclipse but commons-net-1.1.4.jar is not in my jar file.
What is the way to sign applet correctly even if some jar ressources are in eclipse build path.
Thank you

You were right!!!
I'm not sure what to write down in the formsweb.cfg (configuration file) , following the instructions on the on-line help of Developer Forms 10g , in step 9..
The step 9 says...
Because in this release the JACOB code is in an external Jar file and not incorporated into frmwebutil.jar, it needs to be downloaded. To do this, change the WebUtilArchive setting to read: webUtilArchive=/forms/webutil/frmwebutil.jar,/forms/webutil/jacob.jar
The doudt is pointed to the fact that the frmwebutil.jar isn't in the ORACLE_HOME\forms\webutil path but it is ORACLE_HOME\forms\java path.
Also , these paths referenced in webUtilArchive are physical paths in a Unix system or they are logical paths in a url?
Simon

Self signed applet problem

Hello java gurus,
I have a self signed applet which must read and write from mysql DB.
The sign is OK, the popup "warning security" is here but I still have a SQL Exception :
java.security.AccessControlException: access denied (java.util.PropertPermission file.encoding read)
I don't want to change the java policy and I work on plugin 1.4.1_02.
I think the problem is with the certificate cause it should give permission to applet, but it doesn't.
Any help will be very pleasant

From the plug-in control panel, click certificates
then the Signer CA radio button. These are the
certifying authorities that the client plug-in will
accept as valid for signed code. Obviously, if any
client would just accept self-signed code as trusted,
it wouldn't provide much security. For a purely
internal app, you can generate a cert and install it
on the clients which will accept your own signing as
trustworthy.I think I can deal with this properly if you just clear up one thing for me: when you say 'install it on the clients' do you mean use the Plug-In Control Panel to load the certificate using the "Certificates" tab? From there click the "Signed Applet" radio button and "Import" and browse for the cert file? Or does creating this HTML file and clicking on a link to the certificate do something else? I think I am generating my self-signed certificate correctly and signing my jar correctly, but my applet is failing to initialize. Any further help on this much-maligned topic? :)
Thanks,
B. Rintoul

Signed applet problem: signer information does not match...

hi all,
i am actually making a upload component using applets that
would need to access the local file system for uploading
files.
I have created a signed applet(i have followed all the steps,
such as those of creating a jar, creating a key/value pair
using keytool and finally signed my jar file using
jarsigner). when i try to access this applet in a browser,
first the security certificate displays(which is fine),but
then when i click on "grant permission", it gives me a error
saying java.lang.SecurityException: signer information of
a(particular class of mine)does not match with that of other
classes in that......(rest is not visible)
i don't understand why this is happening...i have tried to
repeat all the steps..but still continues to give this error.
can anyone help plz...? i am stuck bceauz of this..as the
JFileChooser dialog box doesn't open up..from which i had to
browse and select files..
Thanks in advance
sd76

first the security certificate displays(which is fine),but then when i click on "grant
permission"Not sure what you're talking about, when I sing an applet and open it with IE and jre 1.5
I get a window titled "Warning - Security". It askes me if I trust the signed applet and
gives me the options yes, no and allways. But never got the "grant permission dialog".
Here is how I signed the applet and got it to read local file system:
http://forum.java.sun.com/thread.jsp?forum=63&thread=524815
second post

Signed Applet - Problem reading large local files

Hello,
I am using a signed applet (self-signed) to read files from a clients machine (local file system). Following is the code for buffered reading (the meat):
String thisLine, ret = "";
try{
     BufferedReader myInput = new BufferedReader(new FileReader(fn));
     while ((thisLine = myInput.readLine()) != null) {
     ret += thisLine + "\n";
     myInput.close();
catch (Exception e) {
     ret = "Cannot load, exception!";
When I read a file <= 512KB, it runs fine/as expected. Now, when I read a file, say for example 1024KB in size, I expect the application to take twice as much time (than 512KB file) and read the file, but instead the applet/browser hangs. As a matter of fact I am not able to read files > 512KB.
So, is there a limit on file size (from local file system) when reading from an applet, or is it to do with the way I am reading it?
Any help, suggestions or comments would be highly appreciated.
Thanks in advance.

Here is how I read a file from my applet:
     private String getData(String u) {
          URL url = null;
          InputStream in = null;
          String ret = null;
          try {
               // the following line wil read a file @ the same location as your class file
               // this way your applet does not need any special privileges
               // you could change the url to a file if so needed
               url = new URL(this.getCodeBase(), u);
               URLConnection conn = url.openConnection();
               // next line is optional and just tells the http server
               // a utf-8 response is accepted
               // some servers will return a bad request
               conn.setRequestProperty("Accept-Charset","utf-8");
               // first try to find out if the server has
               // provided us with the charset of the response
               // since this doesn't work with the msjvp (version 1.1.2)
               // it's commented out
               // instead provide a charEncoding yourselve
               String charEncoding = "UTF8";
//               int i = conn.getHeaderFields().size()-1;
//               while(i>-1){
//                    System.out.print(conn.getHeaderFieldKey(i));
//                    System.out.print("=");
//                    System.out.println(conn.getHeaderField(i));
//                    if(conn.getHeaderField(i).toLowerCase().indexOf("charset")!=-1){
//                         String charsetLine = conn.getHeaderField(i).toUpperCase();
//                         if(charsetLine.indexOf("SHIFT_JIS")!=-1){
//                              charEncoding = "Shift_JIS";
//                         if(charsetLine.indexOf("EUC-JP")!=-1){
//                              charEncoding = "EUC-JP";
//                    i--;
               // here is the value for char encoding (as a parameter in the <object html tag)
               if(this.getParameter("dataCharset")!=null){
                    charEncoding=this.getParameter("dataCharset");
               // wither you have a file or an url you read from an inputstream
               // here is how it's done
               // read the whole file and than turn it into a string
               in = conn.getInputStream();
               ByteArrayOutputStream bos = new ByteArrayOutputStream();
               int len;
               byte[] buf = new byte[1024];
               while ((len = in.read(buf)) > 0) {
                    bos.write(buf, 0, len);
               in.close();
               // you have the file as a byte array (bos.toByteArray()
               // here is how you turn it into a string
               ret = new String(bos.toByteArray(),charEncoding);
          } catch (Exception e) {
               e.printStackTrace(System.out);
          return ret;
     }

Signed applet problem with 1.3.1 but same workin in jre1.4

Hi,
I have performed the following steps to sign an applet
1. javac search.java
2. jar cvf Search.jar *.class
3. keytool -genkey -alias signFiles -keystore abs_stores -keypass
123456 -storepass 123456
4. jarsigner -keystore abs_stores -storepass 123456 -keypass 123456 -
signedjar SignedSearch.jar Search.jar signFiles
The applet searches for some files in the hard drive.
The problem is when I user Jre 1.4,IE 5.5 the applet works but it does not with
jre1.3.1
I need it to work with jre1.3.1.
can someone help me out.
thanks,
Anshuman

I use the following in HTML
<OBJECT
classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
WIDTH = 350 HEIGHT = 300
codebase="http://java.sun.com/products/plugin/1.3.1/jinstall-131-win32.cab#Version=1,3,1,0">
<PARAM NAME = CODE VALUE = "Search" >
<PARAM NAME = CODEBASE VALUE = "." >
<PARAM NAME = ARCHIVE VALUE = "SignedSearch.jar" >
<PARAM NAME="type" VALUE="application/x-java-applet;version=1.3.1">
<PARAM NAME="scriptable" VALUE="false">
<COMMENT>
     <EMBED
type="application/x-java-applet;version=1.3.1"
CODE = "Search"
CODEBASE = "."
ARCHIVE = "SignedSearch.jar"
WIDTH = 350
HEIGHT = 300
     scriptable=false
     pluginspage="http://java.sun.com/products/plugin/1.3.1/plugin-install.html">
     <NOEMBED>
          </NOEMBED>
     </EMBED>
</COMMENT>
</OBJECT>
thanks,
Anshuman

Signed Applet problem

Hi all,
I have a problem about disappering the "JApplet Window" Text.
I am now writing a JApplet using swing technology. The JApplet want to access the local client harddisk so I need to sign the applet. There are serveral classes, one is extending JApplet and the other are extending JDialog. the JApplet class will show or hide the JDialog class.
In the JDialog class, it will validate something and it will popup error dialog by using JOptionPane.showMessageDialog(). However, the problem occur, the popup dialog has a text "JApplet Window" at the bottom.
I want to make the text disappear, Can you tell me the way to do that?
thanks

when you sign the applet, you are signing the Jar file, so any "dialogs" created from classes in the signed jar, shouldn't have that message on their windows. But then again, neither should popup menus in unsigned applets, but sometimes it does.

Signing applets problem

... I did it! kinda...
my applet is at www.twilightfolk.com/holycrap
it is signed by a homemade key I aliased as musselman and exported a cert for.
It's pretty specific to windows users, but the applet simply lists all the files/subfiles in the drive:\folder you specify. It will only look at folders that start with PAT, REL, or EME.
Somehow I got it working on IE, but it doesn't work in Firefox and my friends can't seem to get it to work on their machines either. Basically if you select a drive with a folder starting with any of the aforementioned strings, it should give you a list of all of the folders named like that in the second combo box. If it doesn't it's a permissions error.
I created a .java.policy file for this particular certificate, the contents of which is:
keystore "C:\\Documents and Settings\\djmusselman\\workspace\\Discrepancy\\formshow\\davidstore";
grant signedBy "musselman"{
          permission java.io.FilePermission "<<ALL FILES>>", "read";
          permission java.io.FilePermission "<<ALL FILES>>", "write";
          permission java.io.FilePermission "<<ALL FILES>>", "execute";
          permission java.io.FilePermission "<<ALL FILES>>", "delete";
I've got the cert if anyone thinks they need it or wants to try it out. I promise this thing doesn't do anything malicious :-P

Have you tried signing your applet?
to sign an applet , you can approach 3d parties like Thawte or you can sign them yourself.
Package your class file into a .jar, Create your own keystore, sign the jar file using this keystore.
Then you will be able to open it in a browser.

Sign applet problem

Hi,
I am following the 10 steps by irene to sign the applet. When I go to number 10, if I want to use self-signed certificate, then i need to import self-signed certificate into the cacerts keystore. However, I don't want my clients to do this thing as they probably don't know how to do this. All I want is my client click the "grant" button and the applet inits. So, are there any other methods to do this?

Hi,
I am following the 10 steps by irene to sign the
applet. When I go to number 10, if I want to use
self-signed certificate, then i need to import
self-signed certificate into the cacerts keystore.
However, I don't want my clients to do this thing as
they probably don't know how to do this. All I want is
my client click the "grant" button and the applet
inits. So, are there any other methods to do this?I dont think so, it would open the flood gates for malicious programs. i can write a program that format ur harddisk, sign it and then give it to you.Cacerts contains a list of CAs trusted by the client. That means, The clients still have to approve/agree/import it.
In your case, u can give the cacerts file to the clients and ask them to copy it to the lib\security directory.

Please Help me Solve My Signed Applet Problem

http://forum.java.sun.com/thread.jspa?threadID=736080&tstart=0

hopefully this answers your question
https://helpx.adobe.com/flash/using/using-sounds-flash.html

IIS, Javascript, Signed Applet and ASP Blank Page Problem

Hi,
I'm having a problem using a Signed Applet in a site that runs in a IIS (Windows Server 2003).
My aspx web page uses the applet to read my smart card and get information from it.
This applet uses an auxiliar dll (stored in a second Signed Jar file) in order to read the information from my smart card.
The way the solution is design:
1) Aspx page is asked from server
2) Internet Explorer recieve the page and asks the server for it content (images, applet, javascripts, etc)
3) After this the JVM runs (console opens)
4) After the Aspx page render fully a javascript register onload fires and call an applet method
5) Applet receive the call and run the logic of the method:
     - reads the smart card;
     - calls Javascript function in order to fill aspx fields with information from smart card
     - calls Javascript function the simulates a click in a botton of aspx page (in order to call server side part sending data readed from smart card to server)
5) The server makes some logic with the information receive and responds to client registering in aspx page a call to another Javascrit function
6) The client received the asnwer from server and runs the Javascript function registered on step 5)
     This Javascript calls another method from applet and runs the following logic:
     - reads more information from smart card;
     - call javascript function in order to fill more fields of aspx page with the information readed
     - calls Javascript function the simulates a click in a botton of aspx page (in order to call server side part sending data readed from smart card to server)
7) The server makes some logic and call another pages with no Applets
8) Client asks for a second page with the same applet and we start with another logic express on steps 1);2);3),4);5) and then 7).
This is all ok, until sometimes the server stop responding correcly for requests regarding this two pages with the Applet.
When this happens the server just responds with a blank page.
     - with fiddler I can seer the request for the aspx page (that uses the applet)
     - but server responds with a blank html page
The JVM doesn't fire.
The IIS log don't show errors.
The eventviewer doesn't show errors.
The problem is solved with an IIS reset or a Application Pool reset.
After a while the problem returns.
This problem occours for other user in another machine, the server just stops responding correcly to request regarding pages with applets, the other pages still continue to work.
If we disable Java Control Panel->Advanced->Java Plug-in->Enable the next-generation Java Plug-in the problem seend to stop, but we can't force all clients to disable this option right?
Or there is a way to force the Applet to run with this option disabled?
As anyone experience similar problem?
Regards,
OF

This is all ok, until sometimes the server stop responding correcly for requests regarding this two pages with the Applet.
When this happens the server just responds with a blank page.
- with fiddler I can seer the request for the aspx page (that uses the applet)
- but server responds with a blank html pageWell, if http requests look identical in case of success and failure (pay attention to cookies, etc) then it has to be something on the server side.
It could be that server gets into this wrong state because of previous requests made by applet but it is hard to tell.
I am not clear how old/new plugin can make a difference unless your applets run in the legacy mode (i.e. you are actually trying to reuse SAME instance of the applet when
it is loaded next time).
I'd start with
1) carefully comparing good/bad sessions
2) checking whether server will serve correct response to another client when it serves "bad" page for current client
3) add debug statements to aspx - it is scripted page, may be some condition is not met and then it returns blank?
4) record all http requests in one session until you get to "error" state and then use any http server testing tool to "replay" this set of requests.
You should be able to get server into the same state without use of applet. Then you can try to tweak set of requests to see what makes a difference.

Calling1.4.1 signed applet from Javascript causes keyboard/focus problems

Pretty sure there's a JRE bug here, but I'm posting to forums before I open one in case I'm missing something obvious :-)
This issue may be specific to IE, I haven't tested elsewhere yet. Our web application is centered around a signed applet that is initialized with XML data via Javascript. We first noticed the problem when our users started upgrading from the 1.3.x plug-in to the 1.4.x plug-in. The major symptom was that shortcut keys stopped working. I debugged the problem off and on for about a month before I boiled it down to a very simple program that demonstrates the issue (included below). Basically, the program has a function that adds a JButton to a JPanel and registers a keyboard listener (using the new DefaultKeyboardFocusManager class) that prints a message to the console. This function is called by the applet's init() method, as well as by a public method that can be called from Javascript (called callMeFromJavascript()). I also included a very simple HTML file that provides a button that calls the callMeFromJavascript() method. You can test this out yourself: To recreate, compile the class below, JAR it up, sign the JAR, and put in the same dir with the HTML file. Load the HTML file in IE 5.0 or greater, and bring the console up in a window right next to it. Now click the button that says init--you should see the small box appear inside the button that indicates it has the focus. Now press some keys on your keyboard. You should see "KEY PRESSED!!!" appearing in the console. This is proper behavior. Now click the Init Applet from Javascript button. It has removed the button called init, and added one called "javascript". Press this button. Notice there is no focus occurring. Now press your keyboard. No keyboard events are registered.
Where is gets interesting is that if you go back and make this an unsigned applet, and try it again, everything works fine. This bug only occurs if the applet is signed.
Furthermore, if you try it in 1.3, signed or unsigned, it also works. So this is almost certainly a 1.4 bug.
Anyone disagree? Better yet, anyone have a workaround? I've tried everything I could think of, including launching a thread from the init() method that sets up the components, and then just waits for the data to be set by Javascript. But it seems that ANY communication between the method called by Javascript and the code originating in init() corrupts something and we don't get keyboard events. This bug is killing my users who are very reliant on their shortcut keys for productivity, and we have a somewhat unique user interface that relies on Javascript for initialization. Any help or suggestions are appreciated.
================================================================
Java Applet (Put it in a signed JAR called mainapplet.jar)
================================================================
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class MainApplet extends JApplet implements KeyEventDispatcher
    JPanel test;
    public void init()
        System.out.println("init called");
        setUp("init");
    public void callMeFromJavascript()
        System.out.println("callMeFromJavascript called");
        setUp("javascript");
    private void setUp(String label)
        getContentPane().removeAll();
        test = new JPanel();
        getContentPane().add( test );
        JButton button = new JButton(label);
        test.add( button );
        test.updateUI();
        DefaultKeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDispatcher(this);
    public boolean dispatchKeyEvent(KeyEvent e)
        System.out.println("== KEY PRESSED!!! ==");
        return false;
}================================================================
HTML
================================================================
<form>
<APPLET code="MainApplet" archive="mainapplet.jar" align="baseline" id="blah"
     width="200" height="400">
     No Java 2 SDK, Standard Edition v 1.4.1 support for APPLET!!
</APPLET>
<p>
<input type="button" onClick="document.blah.callMeFromJavascript();" value="Init Applet via Javascript">
</form>

I tried adding the requestFocus() line you suggested... Same behavior.
A good thought, but as I mention in my description, the applet has no trouble gaining the focus initially (when init() is called). From what I have seen, it is only when the call stack has been touched by Javascript that I see problems. This is strange though: Your post gave me the idea of popping the whole panel into a JFrame... I tried it, and the keyboard/focus problem went away! It seems to happen only when the component hierarchy is descended from the JApplet's content pane. So that adds yet another variable: JRE 1.4 + Signed + Javascript + components descended from JApplet content pane.
And yes, signed or unsigned DOES seem to make a difference. Don't ask me to explain why, but I have run this little applet through quite a few single variable tests (change one variable and see what happens). The same JAR that can't receive keyboard events when signed, works just fine unsigned. Trust me, I'm just as baffled as you are.

How to resolve problems in policy file of signed Applet

Hi to All,
I want to connect the web site through my Signed Applet which is working as a Proxy server. but i m facing certain problems in my policy file:
this is my policy file :-
grant {
permission java.security.AllPermission "", "";
permission java.net.SocketPermission "http://www.google.com:4321", "connect, accept,resolve";
permission java.security.UnresolvedPermission;
n i got such type of exceptions n my Applet prompt applet not initialized.
Got connection Socket[addr=/192.168.1.232,port=1200,localport=4321]
Reading request...
URI is: http://www.google.com/
Host to contact is: www.google.com at port 80
Got request...
java.security.AccessControlException: access denied (java.net.SocketPermission www.google.com resolve)
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:264)
at java.security.AccessController.checkPermission(AccessController.java:427)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
at java.lang.SecurityManager.checkConnect(SecurityManager.java:1031)
at java.net.InetAddress.getAllByName0(InetAddress.java:1117)
at java.net.InetAddress.getAllByName0(InetAddress.java:1098)
at java.net.InetAddress.getAllByName(InetAddress.java:1061)
at java.net.InetAddress.getByName(InetAddress.java:958)
at java.net.InetSocketAddress.<init>(InetSocketAddress.java:124)
at java.net.Socket.<init>(Socket.java:179)
at ProxyApplet.handle(ProxyApplet.java:75)
at ProxyApplet.<init>(ProxyApplet.java:132)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
at java.lang.Class.newInstance0(Class.java:350)
at java.lang.Class.newInstance(Class.java:303)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:721)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:650)
at sun.applet.AppletPanel.run(AppletPanel.java:324)
at java.lang.Thread.run(Thread.java:595)
here 4321 is Port no. which i've as a random port no.
plz Help
thnx in advance
with regards
pank_naini

Please, if you can't help me, could you tell me who can I contact ?

Problem with a signed applet and a user machine.

Hello. I´m having some problems with a signed applet with some dependences.
In one particular computer the applet doesn´t load.
The java version installed in that computer is 1.6.0_25.
The invocation tag:
<applet name=applet id="applet" code=Applet/RequestApplet.class width=155 height=21 archive="RequestApplet.jar " MAYSCRIPT>
   <param id="parametro1" name="usuario" value="<Computed Value>">
</applet>The RequestApplet.jar and dependences:
   bcmail-jdk13-145.jar(signed by bouncy castle), jce-ext-jdk13-145.jar(signed by bouncy castle), AbsoluteLayout.jar, plugin.jar, RequestApplet.jar(signed by me)*this files are all in the same folder.
The requestApplet.jar manifest:
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.7.1
X-COMMENT: Main-Class will be added automatically by build
Class-Path: bcmail-jdk13-145.jar jce-ext-jdk13-145.jar plugin.jar Abso
luteLayout.jar
Created-By: 10.0-b23 (Sun Microsystems Inc.)
Main-Class: Applet.RequestApplet
Name: Applet/ResponseApplet$1.class
SHA1-Digest: fO5IPiwEH3OhvlprhBecmMIAVJI=
Name: Applet/NewJApplet.class
SHA1-Digest: 6XSpm7lQEQRi39TegoUYv2aFJrk=
Name: Applet/ResponseApplet.class
SHA1-Digest: v1EbKUFB+QdvO05xx8UzAMNIyRs=
Name: Applet/ResponseApplet$4.class
SHA1-Digest: XH4I67psXZTelpz0AMAYc/Ej8QY=
Name: Applet/RequestApplet$1.class
SHA1-Digest: KAP5sAC4Thv/6GClkFAdGUVzgYA=
Name: Applet/ResponseApplet$5.class
SHA1-Digest: CVPnKrW2SgNEkRzYnVnQe3KGrIU=
Name: Applet/ResponseApplet$3.class
SHA1-Digest: SjfW1k1K7BA9m3AxmHi+jvRE+9o=
Name: Applet/ResponseApplet$2.class
SHA1-Digest: 3Pu18CZMLuEh7/n3y7XxFSkuNQY=
Name: Applet/RequestApplet.class
SHA1-Digest: Tky85es5+o371adetH9XVEI2Z+o=The error:
java.lang.RuntimeException: java.lang.NoClassDefFoundError: org/bouncycastle/jce/provider/BouncyCastleProvider
     at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: org/bouncycastle/jce/provider/BouncyCastleProvider
     at java.lang.Class.getDeclaredConstructors0(Native Method)
     at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
     at java.lang.Class.getConstructor0(Unknown Source)
     at java.lang.Class.newInstance0(Unknown Source)
     at java.lang.Class.newInstance(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager$12.run(Unknown Source)
     at java.awt.event.InvocationEvent.dispatch(Unknown Source)
     at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
     at java.awt.EventQueue.access$000(Unknown Source)
     at java.awt.EventQueue$1.run(Unknown Source)
     at java.awt.EventQueue$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.bouncycastle.jce.provider.BouncyCastleProvider
     at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     ... 20 more

Thanks. I´ll try with your tips. But if i put all the dependences in archive I get this error.
The tag:
<applet name=applet id="applet" CODEBASE="." code="Applet/RequestApplet.class" width=155 height=21 archive="bcmail-jdk13-145.jar, jce-ext-jdk13-145.jar, AbsoluteLayout.jar, plugin.jar, RequestApplet.jar " MAYSCRIPT>
   <param id="parametro1" name="usuario" value="<Computed Value>">
</applet>The error:
Java Plug-in 1.6.0_25
Usar versión JRE 1.6.0_25-b06 Java HotSpot(TM) Client VM
Directorio local del usuario = C:\Documents and Settings\Administrator
c:   borrar ventana de consola
f:   finalizar objetos en la cola de finalización
g:   liberación de recursos
h:   presentar este mensaje de ayuda
l:   volcar lista del cargador de clases
m:   imprimir sintaxis de memoria
o:   activar registro
q:   ocultar consola
r:   recargar configuración de norma
s:   volcar propiedades del sistema y de despliegue
t:   volcar lista de subprocesos
v:   volcar pila de subprocesos
x:   borrar antememoria del cargador de clases
0-5: establecer nivel de rastreo en <n>
basic: Receptor de progreso agregado: sun.plugin.util.GrayBoxPainter$GrayBoxProgressListener@f39b3a
basic: Plugin2ClassLoader.addURL parent called for http://desarrollo.isaltda.com.uy/CertReq.nsf/bcmail-jdk13-145.jar
basic: Plugin2ClassLoader.addURL parent called for http://desarrollo.isaltda.com.uy/CertReq.nsf/jce-ext-jdk13-145.jar
basic: Plugin2ClassLoader.addURL parent called for http://desarrollo.isaltda.com.uy/CertReq.nsf/AbsoluteLayout.jar
basic: Plugin2ClassLoader.addURL parent called for http://desarrollo.isaltda.com.uy/CertReq.nsf/plugin.jar
basic: Plugin2ClassLoader.addURL parent called for http://desarrollo.isaltda.com.uy/CertReq.nsf/RequestApplet.jar

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