Jar extraction and verification in BlackBerry

Posted by Basilio on Stack Overflow See other posts from Stack Overflow or by Basilio
Published on 2010-05-25T06:56:43Z Indexed on 2010/05/25 7:01 UTC
Read the original article Hit count: 291

Filed under:

jar

|

verification

|

extraction

Hi All,

The application I am currently working on requires me to extract contents from and verify the authenticity of the signed jar that is stored on the SD Card. In Java [and Android], we have the java.util.jar and java.util.zip classes, that allow to extract jar. However, J2ME or BlackBerry® does not provide support for these packages. I have, however, successfully extracted these using the third party ZipMe library.

Can anyone let me know, how to get the signature block from the .DSA/.RSA file to authenticate the jar? I have the certificate that was used to sign the jar as well. This is easily done in Java using the getCertificates() method available in java.util.jar.JarFile. Is there any 3rd party API available that emulates the JarFile for BlackBerry®?

Any help in this regard will be deeply appreciated.

Thanks & Regards

Basilio John Vincent D'souza

© Stack Overflow or respective owner

Related posts about jar

Java error starting with "log4j:WARN No appenders could be found for logger" in ZuckerReports SugarC

as seen on Server Fault - Search for 'Server Fault'
Greetings all. I apologise for posting this problem here, but I do so in desperation after receiving no response on the SugarCRM forums. Even if a reader is unfamiliar with ZuckerReports or SugarCRM some general advice on Java may be of use to me. I have installed ZuckerReports v1.12 in SugarCRM… >>> More
AbstractMethodError on org.apache.xalan.processor.TransformerFactoryImpl

as seen on Stack Overflow - Search for 'Stack Overflow'
With the following code: private Document transformDoc(Source source) throws TransformerException, IOException { Transformer xslTransformer = TransformerFactory.newInstance().newTransformer(new StreamSource(pdfTransformXslt.getInputStream())); xslTransformer.setParameter("http://apache… >>> More
Error starting modern compiler

as seen on Stack Overflow - Search for 'Stack Overflow'
In my servlet , I m using Tomcat 5.0 and JRE is 1.5.0 but it is giving error when I click on the URL . As when I created a war file of my project and deployed in tomcat than it is working fine . It means that only problem with my eclipse configuration ERROR IS : - Apr 5, 2010 3:20:22 PM org.apache… >>> More
java.lang.NoSuchMethodError: javax.persistence.OneToMany.orphanRemoval()Z

as seen on Stack Overflow - Search for 'Stack Overflow'
I am getting this error: java.lang.NoSuchMethodError: javax.persistence.OneToMany.orphanRemoval()Z These are the jars in my classpath: com.sun.faces/jsf-api/jars/jsf-api-2.0.0.jar com.sun.faces/jsf-impl/jars/jsf-impl-2.0.0.jar org.apache.myfaces.orchestra/myfaces-orchestra-core20/jars/myfaces-orchestra-core20-1… >>> More
java.lang.NoSuchMethodError: javax.persistence.OneToMany.orphanRemoval()Z

as seen on Stack Overflow - Search for 'Stack Overflow'
I am getting this error: java.lang.NoSuchMethodError: javax.persistence.OneToMany.orphanRemoval()Z These are the jars in my classpath: com.sun.faces/jsf-api/jars/jsf-api-2.0.0.jar com.sun.faces/jsf-impl/jars/jsf-impl-2.0.0.jar org.apache.myfaces.orchestra/myfaces-orchestra-core20/jars/myfaces-orchestra-core20-1… >>> More

Related posts about verification

Quality Assurance activities

as seen on Programmers - Search for 'Programmers'
Having asked but deleted the question as it was a bit misunderstood. If Quality Control is the actual testing, what are the commonest true quality assurance activities? I have read that verification (reviews, inspections..) but it does not make much sense to me as it looks more like quality control… >>> More
Email Verification plugin for rails?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I'd like to verify a user's email address by sending them a verify-email-message. Do you know of a good Rails plugin that they've used or seen? Since I didn't see anything good via Google, at this point, my thought is: Add a verified boolean field to the user model. Default false. After user… >>> More
Account verification Yelp style, how is it more "secure" than traditional verification?

as seen on Stack Overflow - Search for 'Stack Overflow'
For business owners to "take control" of their business page on Yelp, they register for it. The Yelp system performs a telephone call-back. From watching to the video here, it sounds like a telephone version of what we all typically do - e-mail check. For e-mail check, it basically goes like this: User… >>> More
Age verification forms and crawlers

as seen on Stack Overflow - Search for 'Stack Overflow'
I have created a website about some beer brand and had to include age verification page. The verification script is written in PHP and uses sessions to store verification variable. The script works the way that no matter form which link you will try to enter the website it will take you to the verification… >>> More
A Two-Way Requirements Verification Process during Design Phase

as seen on Internet.com - Search for 'Internet.com'
This article will demonstrate a simple technique, "A Two-Way Requirements verification process", which reinforces the most critical connection point of any methodology: the transition between functional design or requirement sign off and the beginning of the technical design by the technical team. >>> More