How to use gp.jar as a library to convert JCOP jcsh script to java

Describe the bug

First of all, thank you for gp.jar. This is not a bug, but instead a feature request. I find the tool has accumulated many features/flags/options across its usage and development through the centuries. I have a JCOP jcsh script that I wish to convert into Java using gp.jar. However, in using gp.jar I am unable to extract or combine the needed constructs to execute my design.

Information about your card

As much information as you have:

JCOP3 SecID P60 CS
NXP
Global Platform 2.1.1 (secure channel protocol SCP 02 option 15)

Expected behavior

Current jcsh script:

/atr
/card
/select F76964706173730101000101
set-key 0/1/DES-ECB/404142434445464748494a4b4c4d4e4f 0/2/DES-ECB/404142434445464748494a4b4c4d4e4f 0/3/DES-ECB/404142434445464748494a4b4c4d4e4f
init-update 0
ext-auth enc
send 001A0000 *9000
send "002A0000#(8200910210007F2E868184268B8129A7402DAC91335793342B8437814237C24238D34238E0423EEE423F4F43433F44521A45662D956D664470745379F2527DE64286EF42905B8697939297A0919AF3929F8D94A2878FA3948FA4A250AB854CB0C651B8CF41B8DA51CAA050D03C4CD54D5DD7175BDBBB50E0255CE5415DE72C4CE7FE41F1B05EF2914EF9C880FC258B)" *9000

/atr
/card
/select F76964706173730101000101
set-key 0/1/DES-ECB/404142434445464748494a4b4c4d4e4f 0/2/DES-ECB/404142434445464748494a4b4c4d4e4f 0/3/DES-ECB/404142434445464748494a4b4c4d4e4f
init-update 0
ext-auth mac
send 001B0000 *9000

Current attempt to convert to java using gp.jar: https://github.com/typelogic/usegp/blob/master/App.java

The problem i'm having in the java test app is at step#3 after gp.openSecureChannel() I tried to call the applet via gp.transmit() and it gave me 0x6E00

Full log

https://gist.github.com/typelogic/93b0a86ce4a196abaa5e8d24b991a97d

Additional context

I wish to convert the above JCOP jcsh script to java using gp.jar. My attempt of doing so is in the above log url. Using gp.jar in my App.java I did:

Select my applet
Test call into my applet to get current security level
Initiate open secure channel using gp
Make another call into my applet to get current security level

In my applet apdu call after I open secure channel, I get 0x6E00 it seems my applet is no longer selected. This applet is correctly behaving in a secure channel using the above jcsh scripts.

I tried status-im/status-keycard-java and it only work if secure channel is with MAC. If I attempt to add ENC, it returns 0x6982 and this error code is not coming from my applet, but instead I believe it is the system that throws it. With the refutations of gp.jar being a standards-based and versatile swiss-army knife javacard tool, I am planning to use its compatibility with our card to open secure channel. Need your guide and tips on how to convert the above jcsh script using gp.jar

martinpaljak / GlobalPlatformPro