To add osck key change the file here: https://github.com/Ansuel/Decrypt_RBI_Firmware_Utility/blob/master/src/decrypt_rbi/board.java

This java application is based on java 8 Pay attention to set the right JDK Docker image used to compile this maven project is openjdk:8u162-jdk

I'm using Java 1.8 for compatibility reason as this can be easily opened on every system. To use more recent java version i need to make system specific version as JavaFx got dropped from openJDK 9 , also on windows to run java 11 application users need to install custom java version.