# java security

Ashutosh Apte (ashutosh@titan.ltindia.com)
Tue, 05 Aug 1997 17:14:20 -0700

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    Date: Tue, 05 Aug 1997 17:14:20 -0700

    From: Ashutosh Apte <ashutosh@titan.ltindia.com>

    To: java-security@web2.javasoft.com

    Subject: java security

Hi ,

I'm presently working on a internet security project using jdk 1.1.3
and jce package.
I'm facing some problem in accessing the private key of the signer
stored in the default scope

Scope: sun.security.IdentityDatabase,

The abstract class Signer provided in java.security package has a method
getPrivateKey() which returns an object PrivateKey . The following
reproduced may help you to understand the problem

public class Ssigner extends Signer {

public Ssigner(String name,IdentityScope scope) throws
KeyManagementException {
super(name, scope);
}

try {
sign = new Ssigner("ashutosh",IdentityScope.getSystemScope());
} catch(KeyManagementException e ) {
System.out.println( e);
}

IdentityScope Iscope = sign.getScope();

Identity I = Iscope.getIdentity("ashutosh");

PublicKey pub = I.getPublicKey();
// here the public key associated with the signer "ashutosh" is returned
but the private key is not returned and gives
java.lang.NullPointerException:

PrivateKey priv = sign.getPrivateKey();

I would be greatful to get your help on this topic

Thanx .........

Ashutosh Apte

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