Table of Contents
1. GPG
GPG is short for GNU Privacy Guard. GnuPG is a tool for secure communication.
2. GNU
GNU is an operating system that if free software.
3. Privacy
3.1. Encrypting(signature) and decrypting documents
- Encrypting
A public key may be thought of as an open safe.
alice% gpg --output doc.gpg --encrypt --recipient [email protected] doc - Decrypting
The corresponding private key is the combination that can reopen the safe and retrieve the document.
bob% gpg --output doc --decrypt doc.gpg - Signature
Transparent safe box
alice% gpg --output doc.sig --sign doc - Clearsigned
Open transparent safe box
alice% gpg --chearsign doc
3.2. Guard
- Safe box itself