In this guide, I will explain the options at your disposal for encrypting files using open-source software on a Linux, Mac, or Windows computer. You can then transport this digital information across distance and time, to yourself or others. The program “GNU Privacy Guard” (GPG) an open-source version of PGP (Pretty Good Privacy), allows: 1. Encryption using a password. 2. Secret messaging using public/private key cryptography 3. Message/Data authentication (using digital signatures and verification) 4. Private key authentication (used in Bitcoin) Option One: Option one is what I’ll be demonstrating below. You can ... (full story)