Accessing the public key stored in a signed jar

Hello,

I signed a jar file and a document (later on) with the same private
key.

Now I want to use the public key stored in a jar file to verify the
signed document. Is there a class available in the SDK to access the
private key from within the *.dsa file?

Or do I miss someting and this makes no sense?

Thanks,
Peter

Peter Mueller wrote:
> Hello,
>
> I signed a jar file and a document (later on) with the same private
> key.
>
> Now I want to use the public key stored in a jar file to verify the
> signed document. Is there a class available in the SDK to access the
> private key from within the *.dsa file?
>

When you save a key you can look at the format (key.getFormat() or
something). If it is PKCS8 you could recreated the key using the the
"PKCS8" parameter for KeyFactory. Unfortunately I don't have the code
for that right here.

Not a complete solution, but maybe this points you in the right direction...

Regards,
Maarten