Larry, gnupg recommends gpg4win tool for Windows.
https://www.gnupg.org/download/index.html#binary - Gpg4win will ask for a PayPal donation. You may set this value to $0 if you wish. - Gpg4win will ask you to install several components. Only Gnupg is required. Once Gpg4win is installed, from Command Prompt: gpg --import Downloads\KEYS > gpg --verify Downloads\pdfbox-app-3.0.3.jar.asc > Downloads\pdfbox-app-3.0.3.jar gpg: Good signature from "Andreas Lehmkuehler (CODE SIGNING KEY) < > le...@apache.org>" [unknown] Note that this is just one of several ways to perform these steps on Windows. Best of regards, - tres.finocchi...@gmail.com
