Be sure that maven is installed https://maven.apache.org/. To package the application run:

mvn clean package

This will create an executable jar in the target folder transparenzsoftware.jar.

If you encounter an error like Execution default-test of goal org.apache.maven.plugins:maven-surefire-plugin:2.18.1:test failed: The forked VM terminated without properly saying goodbye. VM crash or System.exit called? set export _JAVA_OPTIONS=-Djdk.net.URLClassPath.disableClassPathURLCheck=true, this is a known issue in the current openjdk version.

Run with:

java -jar target/transparenzsoftware.jar

• -v enables the logging
• -cli runs it as cli app
• -f <path> verifies the file runned in cli
• -h prints help text

In IntelliJ open the project as a maven project (choose the pom.xml file).

Create a public key from the commandline:

openssl genpkey -algorithm EC -pkeyopt ec_paramgen_curve:P-192  -pkeyopt ec_param_enc:named_curve
openssl openssl ecparam -name secp192r1 -out pvk_file.pem
openssl ec -in pvk_file.pem -pubout -out public_key_file.pem

The main entry point of the application is the App class. There is the static main function which does parameter parsing and initializing and starting the app.

The application has 4 major packages.

• gui this holds the Java Swing classes for rendering the gui. The main entry point in this package is the TransparenzSoftwareMain class which holds, all the components and event listeners.
• i18n holds a class wrapping the loading of translated strings
• output contains classes for generating the resulting xml
• verifification contains the logic to load and verify all implemented formats