You can simply open the JAR with java.util.jar.JarFile and tell it to verify the JAR file. If the JAR is signed, then JarFile has the option to verify it (which is on by default). However, JarFile will also open unsigned JARs happily, therefore you must also check, whether or not the file is signed. You … Read more
I may have had the same problem. I never did figure out why it was failing (though I wonder if it was because the keystore password was shorter than 6 digits), but I was able to copy my key into a new keystore, which I then renamed to replace the old one, and it mysteriously … Read more
You have your debug copy still installed on your device most likely. Now you have downloaded a different copy of the same app and it’s causing this error. Uninstall the app completely from your device. Then download it from the market again and it should work.
Using JDK 1.6 or later It has been pointed out by Justin in the comments below that keytool alone is capable of doing this using the following command (although only in JDK 1.6 and later): keytool -importkeystore -srckeystore mypfxfile.pfx -srcstoretype pkcs12 -destkeystore clientcert.jks -deststoretype JKS Using JDK 1.5 or below OpenSSL can do it all. … Read more
The security dialog might appear differently (and have different text) depending on the circumstances, but it looks roughly as above. If the ‘digital signature cannot be verified’ as in that message in the dialog, then: Always trust will default to false. It will be ignored even if selected. No Name or Publisher will appear. That … Read more