Help needed about controller HOT 1 OPEN

Hi, I really don't have much free time, but I can give you some (hopefully) helpful hints:

First of all, take a look at this class: kse/src/org/kse/crypto/x509/X509Ext.java

There the whole extension parsing is done. You can see there how all the values from a wide variety of common extensions are extracted.

Compare the code with lower part of the extension viewer to see the result:

The following class might also be useful, it updates AKI/SKI extensions: kse/src/org/kse/crypto/x509/X509ExtensionSetUpdater.java

For generating extensions, you can just use the Bouncy Castle classes from the package org.bouncycastle.asn1.x509. In KSE this is done in the classes of this package: kse/src/org/kse/gui/dialogs/extensions

The extension templates in KSE are just the DER encoded extensions, there is nothing special about them.

I don't know how much knowledge you have in this area, but you should have at least a basic understanding of ASN.1, otherwise the code might be too cryptic. Here is a good introduction and reference: https://luca.ntop.org/Teaching/Appunti/asn1.html

Remember that you can copy classes from KSE and modify them as you need (you just have to keep the copyright notice intact).

If you have further questions, you can ask them here, but I cannot promise to answer them.

Good luck!

from controller.