Extracting Packages
You will receive a .tar.gz.gpg package, such as ddm-1.0.0.tar.gz.gpg.
First, decrypt it using the release passphrase provided to you:
Bash
gpg --decrypt ddm-1.0.0.tar.gz.gpg > ddm-1.0.0.tar.gz
Extract the decrypted tar archive:
Bash
mkdir ddm
tar -xvzf ddm-1.0.0.tar.gz -C path/to/your/ddm