Some minor fixes were included since the publication of v1.0.0 — e.g. Grille analysis. If in doubt, choose this version ­­— version 1.0.2.

For Mac OS/X: Please follow these instructions.

• Download and install OpenJDK 11 for Mac OS/X (If you don't have Java 11 already).
• Extract the .tar.gz file. The result should be an app named jcryptool or jcryptool.app.
• Execute the following commands — assuming you extracted JCrypTool directly in the folder "Downloads"; otherwise, adapt the command accordingly to match the folder the app is in.

sudo xattr -r -d com.apple.quarantine ~/Downloads/jcryptool.app