How to sign the MIDlet

Hello,
I am doing application for Motorola L7 SLVR.
I want to sign the midlet but I don't know the detail procedure of signing midlet.
If I want to go through Verisign certificate then is there any way to get trail basis certificate? and yes then how?
Thanks in advance.

All you need to know about the technique of signing is available at
http://www.spindriftpages.net/blog/dave/2006/06/18/midlet-jar-signing-a-tutorial-revised/
This will tell you how to create a trial certificate by yourself, sign and test it on your phone. If that is all you need the you are done.
However if you need to distribute your signed jar & jad to other phones, these other phones must have the trial certificate. In such a case you would usually sign it with a code signing certificate obtained from a certifying authority (like Verisign, Thawte etc.). This certificate would have to be imported onto that phone.

Similar Messages

Procedure to sign the Midlet

hi,
I am working on project which have capibilities get contacts(jsr75), dialing and mesaging. our purpose is to get certificate for trialing to sign the midlet to avoid the conformation messges. please tell me how i get the certificate which helps me to sign the midlet.
thanks for those who tell me.

I'm doing exactly the same thing for a demo. How did you have the midlet signed and installed on mobile device?

How to sign the document in iOS

how to sign the document in iOS

Hello,
If you would like to esign the document received through EchoSign, you can refer this link:
https://helpx.adobe.com/echosign/kb/hub8.html
Let us know if you need more help!
Regards,
-Rijul

How digitally signing the eletroninc payment document?

Hi.
I generate an eletronic payment file via F110 transaction and sent to bank. I want sign this document with digital signature before of send to bank. This process is similar to sending invoices to the government from the GRC, because it also signs the invoice before shipping.
Thank you very much.

Firstly thanks for your help.
My requirement is: the bank that i send the eletronic file payment wants receive this information signed by two directors of my company. So when I run the F110 the signature should be inserted on document. I was investigating how do that and I see the STRUST. What you think?
Did you use digital certificate? What you suggest?
Thanks in advance.

How to Remove the MIDlet Name on The Screen of Mobile, in application

hi
I am working with Mobile application,
while running the application the MIDlet file name is always visible on the screen. So that the image moved down and partly hiden.
how to aviod this problem

If you have an email account set up on your BlackBerry, you're going to receive notifications of new emails in the Notifications Bar; there's no two ways about it. You're able to selectively not receive LED notifications or audio notifications or even vibrations notifications but as long as the email account is active on your phone, you can't get around the Notifications Bar ones.
Cheers.
- If my response has helped you, please click "Options" beside my post and mark it as solved. Clicking the "thumbs up" icon near the bottom of my response would also be appreciated.

How to sign the data with DHPrivateKey

I am testing DH key exchange protocol. When I run the following code, it works.
import java.io.*;
import java.math.BigInteger;
public class DH2 {
    private DH2() {}
    public static void main(String argv[]) {
        try {
            String mode = "USE_SKIP_DH_PARAMS";
            DH2 keyAgree = new DH2();
            if (argv.length > 1) {
                keyAgree.usage();
                throw new Exception("Wrong number of command options");
            } else if (argv.length == 1) {
                if (!(argv[0].equals("-gen"))) {
                    keyAgree.usage();
                    throw new Exception("Unrecognized flag: " + argv[0]);
                mode = "GENERATE_DH_PARAMS";
            keyAgree.run(mode);
        } catch (Exception e) {
            System.err.println("Error: " + e);
            System.exit(1);
    private void run(String mode) throws Exception {
        DHParameterSpec dhSkipParamSpec;
        if (mode.equals("GENERATE_DH_PARAMS")) {
            // Some central authority creates new DH parameters
            System.out.println
                ("Creating Diffie-Hellman parameters (takes VERY long) ...");
            AlgorithmParameterGenerator paramGen
                = AlgorithmParameterGenerator.getInstance("DH");
            paramGen.init(512);
            AlgorithmParameters params = paramGen.generateParameters();
            dhSkipParamSpec = (DHParameterSpec)params.getParameterSpec
                (DHParameterSpec.class);
        } else {
            // use some pre-generated, default DH parameters
            System.out.println("Using SKIP Diffie-Hellman parameters");
            dhSkipParamSpec = new DHParameterSpec(skip1024Modulus,
                                                  skip1024Base);
        System.out.println("ALICE: Generate DH keypair ...");
        KeyPairGenerator aliceKpairGen = KeyPairGenerator.getInstance("DH");
        aliceKpairGen.initialize(dhSkipParamSpec);
        KeyPair aliceKpair = aliceKpairGen.generateKeyPair();
        System.out.println("ALICE: Initialization ...");
        KeyAgreement aliceKeyAgree = KeyAgreement.getInstance("DH");
        aliceKeyAgree.init(aliceKpair.getPrivate());
        byte[] alicePubKeyEnc = aliceKpair.getPublic().getEncoded();
        KeyFactory bobKeyFac = KeyFactory.getInstance("DH");
        X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec
            (alicePubKeyEnc);
        PublicKey alicePubKey = bobKeyFac.generatePublic(x509KeySpec);
        DHParameterSpec dhParamSpec = ((DHPublicKey)alicePubKey).getParams();
        System.out.println("BOB: Generate DH keypair ...");
        KeyPairGenerator bobKpairGen = KeyPairGenerator.getInstance("DH");
        bobKpairGen.initialize(dhParamSpec);
        KeyPair bobKpair = bobKpairGen.generateKeyPair();
        System.out.println("BOB: Initialization ...");
        KeyAgreement bobKeyAgree = KeyAgreement.getInstance("DH");
        bobKeyAgree.init(bobKpair.getPrivate());
        byte[] bobPubKeyEnc = bobKpair.getPublic().getEncoded();
        KeyFactory aliceKeyFac = KeyFactory.getInstance("DH");
        x509KeySpec = new X509EncodedKeySpec(bobPubKeyEnc);
        PublicKey bobPubKey = aliceKeyFac.generatePublic(x509KeySpec);
        System.out.println("ALICE: Execute PHASE1 ...");
        aliceKeyAgree.doPhase(bobPubKey, true);
        System.out.println("BOB: Execute PHASE1 ...");
        bobKeyAgree.doPhase(alicePubKey, true);
        byte[] aliceSharedSecret = aliceKeyAgree.generateSecret();
        int aliceLen = aliceSharedSecret.length;
        byte[] bobSharedSecret = new byte[aliceLen];
        int bobLen;
        try {
            bobLen = bobKeyAgree.generateSecret(bobSharedSecret, 1);
        } catch (ShortBufferException e) {
            System.out.println(e.getMessage());
        bobLen = bobKeyAgree.generateSecret(bobSharedSecret, 0);
        System.out.println("Alice secret: " +
          toHexString(aliceSharedSecret));
        System.out.println("Bob secret: " +
          toHexString(bobSharedSecret));
        if (!java.util.Arrays.equals(aliceSharedSecret, bobSharedSecret))
            throw new Exception("Shared secrets differ");
        System.out.println("Shared secrets are the same");
        System.out.println("Return shared secret as SecretKey object ...");
        bobKeyAgree.doPhase(alicePubKey, true);
        SecretKey bobDesKey = bobKeyAgree.generateSecret("DES");
        aliceKeyAgree.doPhase(bobPubKey, true);
        SecretKey aliceDesKey = aliceKeyAgree.generateSecret("DES");
        Cipher bobCipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
        bobCipher.init(Cipher.ENCRYPT_MODE, bobDesKey);
        byte[] cleartext = "This is just an example".getBytes();
//        Signature signature = Signature.getInstance("SHA1withDSA");
//        signature.initSign(bobKpair.getPrivate());
//        signature.update(cleartext);
//        byte[] data = signature.sign();
        byte[] ciphertext = bobCipher.doFinal(cleartext);
        Cipher aliceCipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
        aliceCipher.init(Cipher.DECRYPT_MODE, aliceDesKey);
        byte[] recovered = aliceCipher.doFinal(ciphertext);
        if (!java.util.Arrays.equals(cleartext, recovered))
            throw new Exception("DES in CBC mode recovered text is " +
              "different from cleartext");
        System.out.println("DES in ECB mode recovered text is " +
            "same as cleartext");
        bobCipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
        bobCipher.init(Cipher.ENCRYPT_MODE, bobDesKey);
        cleartext = "This is just an example".getBytes();
        ciphertext = bobCipher.doFinal(cleartext);
        byte[] encodedParams = bobCipher.getParameters().getEncoded();
        AlgorithmParameters params = AlgorithmParameters.getInstance("DES");
        params.init(encodedParams);
        aliceCipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
        aliceCipher.init(Cipher.DECRYPT_MODE, aliceDesKey, params);
        recovered = aliceCipher.doFinal(ciphertext);
        if (!java.util.Arrays.equals(cleartext, recovered))
            throw new Exception("DES in CBC mode recovered text is " +
              "different from cleartext");
        System.out.println("DES in CBC mode recovered text is " +
            "same as cleartext");
}I want to sign the data with Signature,So i add the following code to the sample.
        byte[] cleartext = "This is just an example".getBytes();
     Signature signature = Signature.getInstance("SHA1withDSA");
        signature.initSign(bobKpair.getPrivate());
        signature.update(cleartext);
        byte[] data = signature.sign();
        byte[] ciphertext = bobCipher.doFinal(cleartext);Run the code again, the output is
Error: java.security.InvalidKeyException: No installed provider supports this key: com.sun.crypto.provider.DHPrivateKey
What's wrong with the code, It seems that the bob's private key is not instance of DSAPrivateKey but DHPrivateKey.
what's your comment? thanks a lot.

slamdunkming wrote:
thank sabre150 for your reply. But the key pair is generated when I use DH to exchange the secret key. Yes! It is a DH key pair and cannot be used for signing. The DH key pair can only be used for secret sharing.
If I can not use this private key to sign the data, what can i do?Do I have to generate another key pair for signature? In that way, I will have two key pair. Yep. You can generate a DSA or an RSA key pair to be used for signing.
Because I use http protocol to exchange the key to get the shared secret key, Yep.
If I generate another key pair, how can i send the public key to server? Since public keys are 'public' then you can send them in the open to anyone you like. In fact, if you don't publish your public keys then they are pretty much a waste of time. The biggest problem one has with public key is proving 'ownership' - if someone sends me a public key how do I know that the sender is actually who they say they are?.
I am confused.Some reading might help. A pretty good starting point is "Beginning Cryptography with Java" by David Hook published by Wrox.

How to sign the applet with verisign certificate?

Hi,
I got a test certificate from the Verisign.
Now I want to know, how to sign my applet with that certificate?
Thanks,
Siva E.

Hi!
You have to create a keystore wich contains the certificate. I think you call keystore -import "verisign.cert"Try the command, and it will tell you what it needs.
To do the acutal signing of an applet (jar-file), you write somehting like this:
jarsigner -keystore "NameOfKeystore" -keypass "PasswordToPrivKey" -storepass "PasswordToStore" "YourJarFile.jar" "CertAlias"The cert alias is an alias you created when importing the certificate. Hope it Helps!
Henrik

How to Uninstall the MIDlet from mobile using J2Me

hi all,
I have a preinstaller MIDlet that will checks the mobile configuration and downloads the original application from my server. After downloading the original application I want to delete the preinstaller MIDlet from my mobile.
Is it Possible?
Please give me some idea..

One way is you have the same application for preinstaller and original,
preinstaller will be a dummy with no data jad entries should be same other
than version and recordstores if any ,
so user can update the same application you can use platformRequest
read docs
If the URL specified refers to a MIDlet suite (either an Application Descriptor or a JAR file), the application handling the request MUST interpret it as a request to install the named package. In this case, the platform's normal MIDlet suite installation process SHOULD be used, and the user MUST be allowed to control the process (including cancelling the download and/or installation). If the MIDlet suite being installed is an update of the currently running MIDlet suite, the platform MUST first stop the currently running MIDlet suite before performing the update. On some platforms, the currently running MIDlet suite MAY need to be stopped before any installations can occur.

How to make the midlet sleep

I want to make midlet sleep a moment, then run.
How to code with j2me.
Thank you.

Hi,
If you make your midlet sleep then it will not respond to any key event also.
Thread t = Thread.currentThread();
t.sleep(5000); //time in milliseconds

How to Sign the Electronic Signautes on the Signed PDF File?

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Are you trying to sign with EchoSign a PDF previously signed with a Digital Signature? AFAIK EchoSign currently cannot sign PDFs previously signed with digital (certificate-based) signatures. This may change in the future.

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I too am having the same problem when logging into www.webkinz.com
To play the game, for which you need an account you have to be able to see the bottom of the page where all the tabs etc are. I have even tried reducing the percent of the page view on Internet Explorer in the bottom right corner and all that does is give me a cut off view of what I want to see, The tabs are cut off. Is there any way to add a scroll bar or something so I can play games on my Dell Inspiron Mini Netbook 10v? I also aready changed the screen resolution to try and reduce the size as well and that has not helped to see the bottom of the page.
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Sign a midlet, and build a prc file

Hi !
I have a java midlet that writes a file in the palm, using FileConnection.
Due to security system, the palm prompts if the user allows the midlet to write in the palm. But I don't want this prompt, and I think I must sign this program.
I have a pkcs12 keystore (.p12), then I would like to sign the midlet with this p12.
I tried to sign the jar thanks to Netbeans, but when I try to tranform jar+jad in prc, it doesn't work.
I tried to sign the prc using prcsign.exe, but I don't know how to sign a prc with a p12 file.
Can you help me, please ?
Thank you.
Laurent

I install portecle.
Then load into it a keystore with keypair that make csr..
load into keypair a ca response.
save keystore and use it to sign midlet.
I install into nokia n73.
Install successful but the http permission is asked anyway.
What's wrong?

How to sign java applet policy to end user?

i have putted my applet class on server, i want all end users can access it on server, how to sign the java.policy to there JRE?
can anyone help me?

I found this some where else. It shows how to sign an applet.
START OF DOC
How To Sign a Java Applet
The purpose of this document is to document the steps required to sign and use an
applet using a self-signed cert or CA authorized in the JDK 1.3 plugin.
The original 9 steps of this process were posted by user irene67 on suns message forum:
http://forums.java.sun.com/thread.jsp?forum=63&thread=132769
-----begin irene67's original message -----
These steps describe the creation of a self-signed applet. This is useful for testing purposes. For use of public reachable applets, there will be needed a "real" certificate issued by an authority like VeriSign or Thawte. (See step 10 - no user will import and trust a self-signed applet from an unkown developer).
The applet needs to run in the plugin, as only the plugin is platform- and browser-independent. And without this indepence, it makes no sense to use java...
1. Create your code for the applet as usual.
It is not necessary to set any permissions or use security managers in
the code.
2. Install JDK 1.3
Path for use of the following commands: [jdk 1.3 path]\bin\
(commands are keytool, jar, jarsigner)
Password for the keystore is any password. Only Sun knows why...
perhaps ;-)
3. Generate key: keytool -genkey -keyalg rsa -alias tstkey
Enter keystore password: *******
What is your first and last name?
[Unknown]: Your Name
What is the name of your organizational unit?
[Unknown]: YourUnit
What is the name of your organization?
[Unknown]: YourOrg
What is the name of your City or Locality?
[Unknown]: YourCity
What is the name of your State or Province?
[Unknown]: YS
What is the two-letter country code for this unit?
[Unknown]: US
Is CN=Your Name, OU=YourUnit, O=YourOrg, L=YourCity, ST=YS, C=US
correct?
[no]: yes
(wait...)
Enter key password for tstkey
(RETURN if same as keystore password):
(press [enter])
4. Export key: keytool -export -alias tstkey -file tstcert.crt
Enter keystore password: *******
Certificate stored in file tstcert.crt
5. Create JAR: jar cvf tst.jar tst.class
Add all classes used in your project by typing the classnames in the
same line.
added manifest
adding: tst.class(in = 849) (out= 536)(deflated 36%)
6. Verify JAR: jar tvf tst.jar
Thu Jul 27 12:58:28 GMT+02:00 2000 META-INF/
68 Thu Jul 27 12:58:28 GMT+02:00 2000 META-INF/MANIFEST.MF
849 Thu Jul 27 12:49:04 GMT+02:00 2000 tst.class
7. Sign JAR: jarsigner tst.jar tstkey
Enter Passphrase for keystore: *******
8. Verifiy Signing: jarsigner -verify -verbose -certs tst.jar
130 Thu Jul 27 13:04:12 GMT+02:00 2000 META-INF/MANIFEST.MF
183 Thu Jul 27 13:04:12 GMT+02:00 2000 META-INF/TSTKEY.SF
920 Thu Jul 27 13:04:12 GMT+02:00 2000 META-INF/TSTKEY.RSA
Thu Jul 27 12:58:28 GMT+02:00 2000 META-INF/
smk 849 Thu Jul 27 12:49:04 GMT+02:00 2000 tst.class
X.509, CN=Your Name, OU=YourUnit, O=YourOrg, L=YourCity, ST=YS, C=US
(tstkey)
s = signature was verified
m = entry is listed in manifest
k = at least one certificate was found in keystore
i = at least one certificate was found in identity scope
jar verified.
9. Create HTML-File for use of the Applet by the Sun Plugin 1.3
(recommended to use HTML Converter Version 1.3)
10. (Omitted See Below)
-----end irene67's original message -----
To make the plug-in work for any browser you have two options with the JDK 1.3 plugin.
1) Is to export a cert request using the key tool and send it to a CA verification source like verisign.
When the reponse comes back, import it into the keystore overwriting the original cert for the generated key.
To export request:
keytool -certreg -alias tstkey -file tstcert.req
To import response:
keytool -import -trustcacerts -alias tstkey -file careply.crt
An applet signed with a cert that has been verified by a CA source will automatically be recognized by the plugin.
2) For development or otherwise, you may want to just use your self-signed certificate.
In that case, the JDK 1.3 plugin will recognize all certs that have a root cert located in the JDK 1.3 cacerts keystore.
This means you can import your test certificate into this keystore and have the plugin recognize your jars when you sign them.
To import self-signed certificate into the cacerts keystore, change directory to where the JDK plugin key store is located.
For JDK 1.3.0_02: C:\Program Files\JavaSoft\JRE\1.3.0_02\lib\security
For JDK 1.3.1: C:\Program Files\JavaSoft\JRE\1.3.1\lib\security
Import your self-signed cert into the cacerts keystore:
keytool -import -keystore cacerts -storepass changeit -file tstcert.crt
(the password is literally 'changeit')
Now, regardless of which method you use, the applet should be recognized as coming from a signed jar. The user can choose to activate it if he / she chooses. If your applet uses classes from multiple jars, for example Apache's Xerce's parser, you will need to sign those jars as well to allow them to execute in the client's brower. Otherwise, only the classes coming from the signed jar will work with the java.security.AllPermission setting and all other classes from unsigned jars will run in the sandbox.
NOTE: Unless otherwise specified by the -keystore command in all keytool and jarsigner operations, the keystore file used is named '.keystore' in the user's home directory.
The first time any keystore is accessed (including the default) it will be created and secured with the first password given by the user. There is no way to figure out the password if you forget it, but you can delete the default file and recreate it if necessary. For most operations, using the -keystore command is safer to keep from cluttering or messing up your default keystore.

XML Signature signing the keyinfo

Hi,
I have a requirement to generate enveloping XML Signature for a XML document. Using JSR 105 i was able to achieve enveloping signature, however one more requirement is to sign the KeyInfo element. Can someone please help in figuring out how to sign the KeyInfo element.
The requirement is to achieve:
<dsig:Signature xmlns:dsig="http://www.w3.org/2000/09/xmldsig#" Id="Signature001">
<dsig:SignedInfo>
<dsig:CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" />
<dsig:SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1" />
<dsig:Reference URI="#KeyInfo001">
<dsig:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
<dsig:DigestValue>lidrMtTOohEypP9i9KcrY9+MrbI=</dsig:DigestValue>
</dsig:Reference>
<dsig:Reference URI="#Resource1">
<dsig:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
<dsig:DigestValue>hUHy5l7iki/Xks3V0bzz7kamGlU=</dsig:DigestValue>
</dsig:Reference>
</dsig:SignedInfo>
<dsig:SignatureValue>GufDaAGCgjTfLKFZhK8/6Sb9KbqnKFQdaQ4SZ4ftoOySmYuYvLAh7wmYdiqqx7ykpWnvfejP+6wT
SamsvB6xotqkUgC3p1ZsJubq9Wc4kKZeaTJfEmeq0vIWjCWFXu3pofJJSyecmBWmTQK+WezMwRIX
aE4oHWJsXDBw8CarlmI=</dsig:SignatureValue>
<dsig:KeyInfo Id="KeyInfo001">
<dsig:KeyValue>
<dsig:RSAKeyValue>
<dsig:Modulus>xm9N3kv/MNfsYOoN48vhy3xiCyJuZl5nxEb2ya8+ItvwI+73IjSjVlqfkdxIAH4vBpjVhLfpV+p+
GUqpuN6kb2/ynnXAcRzM/YGkIsVYBHZZsUK6BSfIxo/IDmPC2cv866W6NG8DQlnzRhOYBLpdtc3P
XlRdkm6SlDLv8/ck+FE=</dsig:Modulus>
<dsig:Exponent>AQAB</dsig:Exponent>
</dsig:RSAKeyValue>
</dsig:KeyValue>
</dsig:KeyInfo>
<dsig:Object Id="Resource1">
...

Can you post the full stack trace of the ArrayIndexOutOfBoundException please? Also, what version/update of the JRE are you using?

How to sign iPhone application using developer certificates

Hello,
will anyone tell me that how to sign the iPhone application using developer certificate and one more thing that how will i get the developer certificate.
Thanks

ya i got the solution, just go through the following link...
you will also know how we do that..
http://developer.apple.com/iphone/library/documentation/Xcode/Conceptual/iphonedevelopment/120-Running_Applications/runningapplications.html
http://developer.apple.com/iphone/library/documentation/Xcode/Conceptual/iphonedevelopment/128-Managing_Devices/devices.html#//appleref/doc/uid/TP40007959-CH4-SW38

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