Multiple Signers/ JCE Provider

Question

When I try to deploy application with more then one party signed jar, JWS reports problem and rejects application starting. JCE 1.2.1 requires provider's jar to be signed to work. So I need to have two signers: my own signed application jar and JCE provider JAR. This problem is very serious !!!

Answer 1

In your JNLP file resources section, put a line that looks like this in there in place of the references to the JCE jars:
<extension name="Java Cryptography Extension" href="crypto.jnlp"/>
Then, in a file called crypto.jnlp (or whatever), put entries like:
<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0+"
codebase="http://your.url.goes.here"
href="crypto.jnlp">
<information>
<title>Java Cryptography Extension</title>
<vendor>Sun Microsystems</vendor>
<offline-allowed/>
</information>
<security>
<all-permissions/>
</security>
<resources>
<jar href="jce1_2_1.jar" download="eager"/>
<jar href="sunjce_provider.jar" download="eager"/>
</resources>
<component-desc/>
</jnlp>